Triumph TR7 Specs

The coupé, the convertible and the Sprint side by side, from British Leyland's own figures of 1980 and the period tests, with the details the comparison does not hold and an explanation of why the power, the weight and the performance each have more than one figure.

An early British TR7 coupé from behind, registered in 1976–77, at a show at the British Motor Museum, Gaydon, in July 2018.Vauxford, CC BY-SA 4.0

The comparison sets the three TR7s side by side: the coupé, the convertible and the TR7 Sprint. Most of its figures are British Leyland's own, from the specification Rover Triumph issued with the British drophead in March 1980, which gave the fixed-head's weights too; the rest come from the period road tests. It shows the British cars' figures; the American cars differed, and the sections below say how. A small asterisk beside a value opens a note with the other figures in print and their sources, and the details the comparison does not hold are in tables here.⁠source 1source 2source 3source 4

Engine and power

The TR7's engine was Triumph's slant-four, the in-line four of the Dolomite saloon (sedan), leaning to one side under the low bonnet (hood). Motor Sport described where its parts came from:

The in-line, slant-four engine is a variation on the Dolomite theme, using the 1,998 c.c., 90.3 mm. X 78 mm. Dolomite Sprint block topped by the single-overhead camshaft, eight valve cylinder head from the 1,854 c.c. Dolomite.

Clive Richardson, Motor Sport, June 1979

The block is iron and the head aluminium, Ate Up With Motor notes; the buyers guide says what that means for the head gasket. The British cars had twin SU carburettors, the American cars Zenith-Strombergs or, later, fuel injection, and the American launch car Lucas transistorised ignition.

Item	Reading	Source
Red line	6,500 rpm, marked on the rev counter: the red line in 1979, the "yellow line" in 1976	Motor Sport, 1976 and 1979
Firing order	1-3-4-2	Rover Triumph, 1980
Oil pressure	3.5 kg/cm² (50 psi), nominal	Rover Triumph, 1980
Engine oil, with filter	About 4.5 litres (8 imperial pints)	Rover Triumph, 1980

The TR7's power has several figures because it was rated in different ways for different markets. The British and European cars' figure, which the comparison gives, is a DIN rating. The American launch rating is an SAE net figure for a different tune, the federal engine, with lower compression and other carburettors, and California's was lower still at first, with one carburettor; its power fell again by 1980, and the injected engine of the 1981 model year rated a little higher, Ate Up With Motor records. The North American TR7s page lists the American changes by year.

The two ratings do not compare directly, though Motor Sport set them against each other in 1976, in the sentence the North American TR7s page quotes. The TR Register prints a North American figure a little higher than the launch rating, "approximately", and does not say on what basis it was measured. The Canadian convertible's brochure gives its engine a DIN rating of its own, at a lower compression than the British car's.⁠source 4source 3source 1source 5source 2source 6source 7source 8

An engine bay seen from the right, with the inclined four-cylinder engine and its ancillaries. — The carburettor side of a TR7 Sprint's engine bay, with the twin carburettors under their long air box; from this side an eight-valve TR7's would look much the same.Graham.Fountain, CC BY-SA 3.0

Contents

Gearboxes and axles

Three gearboxes (transmissions) were fitted. The first TR7s had a four-speed gearbox with the Dolomite's ratios and no overdrive. Rover's SD1 supplied the five-speed and Borg-Warner the Model 65 automatic, both offered from the 1976 model year; in 1978 the five-speed was made standard. Each had its own axle ratio:

Gearbox	Axle ratio	Other ratios	Source
Four-speed	3.63:1	The Dolomite's	Motor Sport, 1975 (the American preview car)
Five-speed	In the comparison	In the note by the comparison's Running gear heading	Rover Triumph, 1980; Motor Sport, 1979
Automatic	3.27:1	2.39, 1.45 and 1.00:1, reverse 2.09:1; torque converter 1.91:1	Rover Triumph, 1980; Motor Sport, 1979

Road & Track, testing the TR8 in June 1980, gave the four-cylinder car's axle as 3.45:1, a figure no other source read gives. Motor Sport, in 1979, gave the speeds in the gears at 6,000 rpm with each manual gearbox:⁠source 2source 4source 1source 5source 9

Gear	Four-speed	Five-speed
First	71 km/h (44 mph)	55 km/h (34 mph)
Second	106 km/h (66 mph)	87 km/h (54 mph)
Third	150 km/h (93 mph)	129 km/h (80 mph)

Looking down into a convertible's cockpit: dashboard, steering wheel, gear lever and black seats. — The gear lever sits between the seats of this left-hand-drive TR7 convertible, seen from above at a show in Poland in 2014; the picture cannot show whether its gearbox has four speeds or five.Dawid783, CC BY-SA 4.0

Contents

Chassis, steering and brakes

The body was a steel monocoque with a separate front subframe. MacPherson struts with coil springs, lower links and an anti-roll bar carried the front, and a live axle on four links, two trailing arms below and two semi-trailing rods above, with coil springs, telescopic dampers and an anti-roll bar, carried the back; the comparison gives the factory's wording. Steering was by rack and pinion, and the brakes were discs at the front and drums at the back, with a servo and split circuits; the five-speed cars had bigger rear drums.

Item	Reading	Source
Turns of the steering wheel, lock to lock	3⅞, or 3.86	Rover Triumph, 1980; Motor Sport, 1976
Turning circle	8.8 m (29 ft); 8.83 m in the Canadian brochure	Rover Triumph, 1980; the Canadian brochure
Brake servo	Direct-acting, boost ratio 2.3:1	Rover Triumph, 1980
Wheel fixing	Four studs on a 95.25 mm (3.75 in) pitch circle, offset ET25, hub-centred	The TR Register's answers to owners

The front discs have three sizes in print, and no source read explains the difference: the period tests of 1975 and 1979 give one, and Rover Triumph's 1980 figure is a little smaller; the Canadian brochure gives a third. The comparison's note sets them out. Whether early cars had bigger discs than later ones is not known from the sources read. On tyres, BL's figure for the five-speed cars and Ate Up With Motor both have an H speed rating; the car Motor Sport tested in 1979 ran on tyres of the lower S rating.⁠source 1source 3source 2source 4source 8source 7source 5

Contents

Dimensions and weights

Their bumpers added 140 mm (5.5 in) to the North American cars, and the comparison's length is the British car's. Motor Sport gave the American preview car of 1975 as 13 ft 8.3 in long, a little shorter than later figures for the American cars; the Canadian brochure gives the length in inches and in centimetres, and the two do not agree, by our arithmetic.

Item	Reading	Source
Track, front and rear	1,409 and 1,404 mm (55.5 and 55.3 in)	Rover Triumph, 1980
Ground clearance	90 mm (3.5 in)	Rover Triumph, 1980
Boot (trunk), coupé	292 litres (10.3 cu ft), nominal	Ate Up With Motor
Boot, Canadian convertible	0.29 cubic metres	The Canadian brochure

The weights in the comparison are Rover Triumph's of 1980, for each body with a manual gearbox and with the automatic; Motor Sport's report of the drophead repeats the release, so it is not a second source. Older figures are of other cars, in other years: Motor Sport called the American preview car of 1975 "exactly one ton" and gave its British car of 1976 a weight in hundredweight, and Ate Up With Motor gives a round figure for every TR7. The comparison's note gives those it holds, each with its basis.⁠source 1source 5source 2source 10source 8

A red convertible with its hood up and long black bumpers, side-on beside a building. — A North American convertible in Alberta in May 2008, its long bumpers adding to its length; it is left-hand drive and its hood (soft top) is up.dave_7, CC BY-SA 2.0

Contents

Electrics

The headlamps are round units in pods that an electric motor raises, a feature of the wedge from the first preview. The rest is a 12-volt system:⁠source 1source 2

Item	Reading	Source
System	12 V, negative earth	Rover Triumph, 1980
Battery	40 Ah, at the 20-hour rate	Rover Triumph, 1980
Alternator	Lucas 17ACR, 36 A nominal	Rover Triumph, 1980
Headlamps	Retractable, 178 mm (7 in) round units, electric motors	Motor Sport, 1975

A black convertible with red side stripes and Spider badging on a wet car park. — Both headlamps raised and lit on a TR7 Spider, an American edition of the 1980 model year, in a car park in the United States.Stormbear, CC BY-SA 2.5

A close-up of a car's instrument binnacle, the rev counter in focus beside a strip of warning lamps. — A TR7's rev counter, its red sector beginning at about 6,500 rpm, beside the strip of warning lamps, photographed in the United States in 2015.Jacob Frey 4A, CC BY 2.0

Contents

Performance, claimed and tested

The figures most often quoted for the TR7 are Leyland's own claims, and the tests did not always match them. Motor Sport passed on Leyland's claimed maximum speed in 1976, "though neither of the cars we tried would reach that maximum without help from inclines", and in 1979 it measured its Canley car more slowly than Leyland's claim; the comparison gives both, each labelled. Other tests add figures the comparison does not hold:

Test	What it measured	Source
Autocar Autotest, June 1977, a British coupé	0–100 mph in 32.1 seconds; the standing quarter-mile in 17.0 seconds	As cited in Autocar, 1979
Road & Track, September 1979, an American convertible	0–60 mph in 11.5 seconds	As cited in Road & Track, June 1980
Road Test, July 1980, an American TR7	9.5 litres per 100 km (24.8 US mpg) on average over 4,970 km (3,088 miles)	Road Test, July 1980
Canada's Department of Transport, the convertible	10.5 litres per 100 km with the five-speed, 9.9 with the automatic	The Canadian brochure

The Autocar test's date is given as 26 June 1977 in the account that cites it, which was a Sunday, by our arithmetic, so the issue is uncertain. The TR Register also prints a performance table, without saying whose tests it records.⁠source 3source 4source 6source 11source 9source 12source 8source 7

A red coupé race car numbered 7 at speed past circuit barriers, the background blurred. — A TR7 coupé at speed in a modern club race at Brands Hatch in May 2011: a modified racing car, not a road car of the period.Tony Harrison, CC BY-SA 2.0

Contents

Production

Sources for Production, by version

Price new: Coupe: Several figures in print.Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3; Keith Adams, "The Cars: Triumph TR7/TR8 development story", AROnline, updated 8 Feb 2024⁠source 6; Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4; Convertible: One good source.UK, 1980; £794 more than the MGB. "C.R.", "The Triumph TR7 Drophead" ("Sunshine Seven"), Motor Sport, Apr 1980, p. 35⁠source 10
Built: Coupe: Several figures in print.Keith Adams, "The Cars: Triumph TR7/TR8 development story", AROnline, updated 8 Feb 2024⁠source 6; Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 13; Convertible: Several figures in print.Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 13; Thos L. Bryant, "New from Britain: Triumph TR7 Convertible & TR8", Road & Track (reprinted by the TR Drivers Club), 1979⁠source 14; TR7 Sprint: Several figures in print.Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 13; Graham Fountain, "The TR7 Sprint Story", TR Driver (TR Drivers Club), 1991 no. 2⁠source 15
Designers: TR7 Sprint: One good source.The TR7 coupé, 1976. Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3
Built at: Convertible: One good source.Drophead production. Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 13; TR7 Sprint: Good sources agree.Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 13; Graham Fountain, "The TR7 Sprint Story", TR Driver (TR Drivers Club), 1991 no. 2⁠source 15

Production, by version
Item	Coupe	Convertible	TR7 Sprint
Price new	£2,999 Price new, Coupe Several figures in print. £2,999Good sources agree: Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63, UK, on sale 19 May 1976; "just £16 dearer than the RS2000"⁠source 3; Keith Adams, "The Cars: Triumph TR7/TR8 development story", AROnline, updated 8 Feb 2024, UK launch⁠source 6 £4,995.90One good source: Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58, UK, 1979, the test car⁠source 4	£5,958	Not in the sources read
Built	Sep 1974 – Oct 1981 Built, Coupe Several figures in print. Sep 1974 – Oct 1981One good source: Keith Adams, "The Cars: Triumph TR7/TR8 development story", AROnline, updated 8 Feb 2024, TR7 production starts at Speke; production ends⁠source 6 built in 1981One good source: Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016), 1,455 FHCs that year; BL figures by calendar year (1,016 home, 439 export)⁠source 13	from January 1979 (TCT 100001, 1979 model year) Built, Convertible Several figures in print. from January 1979 (TCT 100001, 1979 model year)One good source: Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016), US convertibles, Canley⁠source 13 on sale in the US by 1 July 1979One good source: Thos L. Bryant, "New from Britain: Triumph TR7 Convertible & TR8", Road & Track (reprinted by the TR Drivers Club), 1979⁠source 14 October 1981 (the last TR7 by number, a right-hand-drive drophead)One good source: Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016)⁠source 13	Feb – Oct 1977 Built, TR7 Sprint Several figures in print. Feb – Oct 1977Good sources agree: Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016), Speke⁠source 13 February to October 1977Good sources agree: Graham Fountain, "The TR7 Sprint Story", TR Driver (TR Drivers Club), 1991 no. 2⁠source 15
Designers	Not in the sources read	Not in the sources read	Harris Mann (body)
Built at	Not in the sources read	Canley (TCT, from January 1979); Solihull (from April 1980)	Speke

Contents

Engine

Sources for Engine, by version

Engine maker: Convertible: One good source.The TR7's engine. Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5; TR7 Sprint: One good source.The Dolomite Sprint engine. Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5
Capacity: Convertible: Good sources agree."1998 cc. (122 cu. in.)". Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; TR7 Sprint: One good source.The Dolomite Sprint's 16-valve engine, the TR7 Sprint's (Fountain, AROnline); 122 cu in. Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5
Engine position: Convertible: One good source.The TR7, 1975. Clive Richardson ("C.R."), "The TR7 makes a quiet British bow", Motor Sport, Feb 1975, p. 30⁠source 2; TR7 Sprint: One good source.The TR7 coupé, 1976. Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3
Block: Convertible: One good source.Triumph's slant four (and V8) as designed. Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5; TR7 Sprint: One good source.Triumph's slant four as designed. Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5
Cylinder head: Convertible: One good source.Early TR7s: head-gasket failure "with an attendant risk of warping the aluminum head". Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5
Valve gear: Convertible: One good source.The TR7 engine, 1979 ("in other major respects the TR7 is unchanged"). Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4; TR7 Sprint: Several figures in print.Graham Fountain, "The TR7 Sprint Story", TR Driver (TR Drivers Club), 1991 no. 2⁠source 15; Keith Adams, "The Cars: Triumph TR7/TR8 development story", AROnline, updated 8 Feb 2024⁠source 6
Bore × stroke: Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; TR7 Sprint: One good source.Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4
Compression ratio: Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8
Fuel system: Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1
Carburettors: Convertible: One good source.UK. Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1
Cooling: Convertible: One good source.The TR7's engine. Simon Godrich, "TR7 Tribulations" (owner's checklist), TR Drivers Club⁠source 16; TR7 Sprint: One good source.The TR7's block. Simon Godrich, "TR7 Tribulations" (owner's checklist), TR Drivers Club⁠source 16
Cylinder layout: Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; TR7 Sprint: One good source.Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4
Aspiration: Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1
Fuel: Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1
Cycle: Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; TR7 Sprint: One good source.Graham Fountain, "The TR7 Sprint Story", TR Driver (TR Drivers Club), 1991 no. 2⁠source 15

Engine, by version
Item	Coupe	Convertible	TR7 Sprint
Engine maker	Not in the sources read	Triumph	Triumph
Capacity	Not in the sources read	1998 cc	1998 cc
Engine position	Not in the sources read	Front	Front
Block	Not in the sources read	iron	iron
Cylinder head	Not in the sources read	Aluminium	Not in the sources read
Valve gear	Not in the sources read	single-overhead camshaft, eight valve cylinder head	16 valves ('called a 4 valve engine by BL') Valve gear, TR7 Sprint Several figures in print. 16 valves ('called a 4 valve engine by BL')Good sources agree: Graham Fountain, "The TR7 Sprint Story", TR Driver (TR Drivers Club), 1991 no. 2⁠source 15 16-valve headGood sources agree: Keith Adams, "The Cars: Triumph TR7/TR8 development story", AROnline, updated 8 Feb 2024, the Dolomite Sprint engine⁠source 6
Bore × stroke	Not in the sources read	90.3 × 78.0 mm Bore × stroke, Convertible Several figures in print. 90.3 × 78.0 mmGood sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1 90.3 mm (3.56 in) × 78 mm (3.06 in)Good sources agree: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada⁠source 8	90.3 x 78 mm
Compression ratio	Not in the sources read	9.25:1 Compression ratio, Convertible Several figures in print. 9.25:1One good source: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, UK⁠source 1 8.25:1One good source: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada⁠source 8	Not in the sources read
Fuel system	Not in the sources read	Carburettors 2XSU-HS6 side draught tamper proofed	Not in the sources read
Carburettors	Not in the sources read	two SU HS6	Not in the sources read
Cooling	Not in the sources read	Water-cooled	Water-cooled
Cylinder layout	Not in the sources read	in line, inclined 45° Cylinder layout, Convertible Several figures in print. in line, inclined 45°Good sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1 4 in line, inclined 45°Good sources agree: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada⁠source 8	in-line, slant-four
Aspiration	Not in the sources read	Naturally Aspirated	Not in the sources read
Fuel	Not in the sources read	Petrol	Not in the sources read
Cycle	Not in the sources read	Four-stroke	Four-stroke

Contents

Performance

Sources for Performance, by version

Power: Coupe: Good sources agree.78 kW at 5,500 rpm (1980 specification, which gives the fixedhead's weights too). Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5; Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8
Torque: Convertible: One good source.161 Nm at 3,500 rpm; UK. Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8
Top speed: Coupe: Good sources agree.Around; Leyland's claim, which neither test car reached without help from inclines; UK. Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3; Keith Adams, "The Cars: Triumph TR7/TR8 development story", AROnline, updated 8 Feb 2024⁠source 6; Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4
0–60 mph: Coupe: Several figures in print.Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3; Keith Adams, "The Cars: Triumph TR7/TR8 development story", AROnline, updated 8 Feb 2024⁠source 6; Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4; Malcolm Paris (compiler), "Triumph TR7 / TR7 V8 and TR8 Buyers Guide", TR Register⁠source 7

Performance, by version
Item	Coupe	Convertible	TR7 Sprint
Power	105 bhp	105 bhp Power, Convertible Several figures in print. 105 bhpGood sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, 78 kW at 5,500 rpm; drophead, 1980⁠source 1; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5, DIN (77 kW); the non-US cars from 1976⁠source 5 85.5 bhpOne good source: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, DIN at 5,500 rpm; Canada, 8.25:1⁠source 8	Not in the sources read
Torque	Not in the sources read	119 lb ft	Not in the sources read
Top speed	110 mph	Not in the sources read	Not in the sources read
0–60 mph	9.4 s 0–60 mph, Coupe Several figures in print. 9.4 sGood sources agree: Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63, Leyland's claim; UK⁠source 3; Keith Adams, "The Cars: Triumph TR7/TR8 development story", AROnline, updated 8 Feb 2024, Leyland's claim⁠source 6 a little over 10 sOne good source: Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58, UK five-speed car, 1979; road impressions, not a full road test⁠source 4 9.1 sNot yet confirmed: Malcolm Paris (compiler), "Triumph TR7 / TR7 V8 and TR8 Buyers Guide", TR Register, performance table; the source of the figure is not given⁠source 7	Not in the sources read	Not in the sources read

Contents

Running gear

Sources for Running gear, by version

Steering: Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; TR7 Sprint: One good source.The TR7 coupé, 1979. Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4
Gearbox: Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8
Gears: Convertible: One good source.Five-speed manual: 3.32, 2.09, 1.40, 1.00, 0.83. Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1
Layout: Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; TR7 Sprint: One good source.The TR7 coupé, 1976. Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3
Front brakes: Coupe: Good sources disagree.Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4; Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8
Rear brakes: Coupe: Several figures in print.Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4; Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Clive Richardson ("C.R."), "The TR7 makes a quiet British bow", Motor Sport, Feb 1975, p. 30⁠source 2; Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8
Front suspension: Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; TR7 Sprint: One good source.The TR7 coupé, 1979. Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4
Rear suspension: Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; TR7 Sprint: One good source.The TR7 coupé, 1976. Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3
Tyres: Coupe: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5; Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4; Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8
Wheels: Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1
Final drive: Convertible: One good source.Manual. Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; TR7 Sprint: One good source.The TR7 coupé, 1976. Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3
Clutch: Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8
Starter: Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1

Running gear, by version
Item	Coupe	Convertible	TR7 Sprint
Steering	Not in the sources read	manual, rack and pinion Steering, Convertible Several figures in print. manual, rack and pinionGood sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1 Rack and pinionGood sources agree: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada⁠source 8	rack and pinion
Gearbox	Not in the sources read	manual, five forward ratios; automatic optional Gearbox, Convertible Several figures in print. manual, five forward ratios; automatic optionalGood sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1 ManualGood sources agree: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada⁠source 8	Not in the sources read
Gears	Not in the sources read	5	Not in the sources read
Layout	Not in the sources read	RWD	RWD
Front brakes	9¾ in discs Front brakes, Coupe Good sources disagree. 9¾ in discsDisputed: Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58, UK, 1979⁠source 4 241 mm × 9.5 mm discsDisputed: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, 1980 specification⁠source 1	241 mm × 9.5 mm discs Front brakes, Convertible Several figures in print. 241 mm × 9.5 mm discsOne good source: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, 1980 specification⁠source 1 25 cm discsNot yet confirmed: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada⁠source 8	Not in the sources read
Rear brakes	8 × 1½ in drums; 9 × 1¾ in with the five-speed Rear brakes, Coupe Several figures in print. 8 × 1½ in drums; 9 × 1¾ in with the five-speedGood sources agree: Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58, UK, 1979; automatics kept the smaller drums⁠source 4 229 mm (manual), 204 mm (automatic)Good sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, 1980 specification⁠source 1 8 × 1½ in drumsGood sources agree: Clive Richardson ("C.R."), "The TR7 makes a quiet British bow", Motor Sport, Feb 1975, p. 30, US preview car, four-speed, 1975⁠source 2	229 mm (manual), 204 mm (automatic) Rear brakes, Convertible Several figures in print. 229 mm (manual), 204 mm (automatic)Good sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1 22.9 cm drumsGood sources agree: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada⁠source 8	Not in the sources read
Front suspension	Not in the sources read	Independent, comprising telescopic struts and co-axle coil springs, transverse bottom links and an anti-roll bar Front suspension, Convertible Several figures in print. Independent, comprising telescopic struts and co-axle coil springs, transverse bottom links and an anti-roll barGood sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1 MacPherson strut suspension; independent, telescopic struts, co-axial coil springs, single transverse lower links and anti-roll barGood sources agree: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada⁠source 8	MacPherson struts, coil springs, anti-roll bar
Rear suspension	Not in the sources read	live axle, lower trailing arms, upper semi-trailing radius rods, coil springs, telescopic dampers, anti-roll bar	a four-link located live rear axle sprung by coils and aided by telescopic dampers and an anti-roll bar
Tyres	185/70 HR 13 (manual), 175/70 SR 13 (automatic) Tyres, Coupe Several figures in print. 185/70 HR 13 (manual), 175/70 SR 13 (automatic)Good sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, 1980 specification⁠source 1 175/70 SR 13 Goodyear radials on 5½J wheelsOne good source: Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63, UK launch car, four-speed, 1976⁠source 3 H-ratedGood sources agree: Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5, five-speed cars; "wider" than before⁠source 5 185/70 SR 13 (Michelin XVS on the test car)One good source: Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58, five-speed models, 1979; automatics 175/70 SR 13⁠source 4	185/70 HR 13 (manual), 175/70 SR 13 (automatic) Tyres, Convertible Several figures in print. 185/70 HR 13 (manual), 175/70 SR 13 (automatic)Good sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1 H-ratedGood sources agree: Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5, five-speed cars; "wider" than before⁠source 5 185/70 SR 13One good source: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada⁠source 8	Not in the sources read
Wheels	Not in the sources read	Pressed steel, 13 in dia. with 5½ J safety ledge rims	Not in the sources read
Final drive	Not in the sources read	Shaft	Shaft
Clutch	Not in the sources read	216 mm dia. (8½ in) single dry plate, diaphragm spring clutch Clutch, Convertible Several figures in print. 216 mm dia. (8½ in) single dry plate, diaphragm spring clutchGood sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1 8½ in. dia. (216 mm.) diaphram spring type. Hydraulically operatedGood sources agree: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada⁠source 8	Not in the sources read
Starter	Not in the sources read	Electric	Not in the sources read

Contents

Body and chassis

Sources for Body and chassis, by version

Body material: Convertible: One good source.Canada. Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; TR7 Sprint: One good source.The TR7 coupé, 1979. Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4
Doors: Convertible: One good source.Canada. Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; TR7 Sprint: One good source.The drophead kept the coupé's doors. Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1
Seats: Convertible: One good source.Canada. Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; TR7 Sprint: One good source.The TR7 coupé, 1976. Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3
Chassis material: Convertible: One good source.Canada. Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; TR7 Sprint: One good source.The TR7 coupé, 1976, 1979. Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3
Chassis: Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; TR7 Sprint: One good source.The TR7 coupé, 1976. Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3

Body and chassis, by version
Item	Coupe	Convertible	TR7 Sprint
Body material	Not in the sources read	Steel panelled body with separate front sub-frame	Steel
Doors	Not in the sources read	2	2
Seats	Not in the sources read	2	2
Chassis material	Not in the sources read	Steel	Steel
Chassis	Not in the sources read	Monocoque	Monocoque

Contents

Dimensions and weight

Sources for Dimensions and weight, by version

Length: Coupe: Good sources agree.Outside North America; 1980 specification. Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5; Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; TR7 Sprint: One good source.Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5
Width: Coupe: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Clive Richardson ("C.R."), "The TR7 makes a quiet British bow", Motor Sport, Feb 1975, p. 30⁠source 2; Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; TR7 Sprint: One good source.The TR7 coupé, 1975. Clive Richardson ("C.R."), "The TR7 makes a quiet British bow", Motor Sport, Feb 1975, p. 30⁠source 2
Height: Convertible: One good source.Hood up. Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1
Kerb weight: Coupe: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63⁠source 3; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5; Convertible: Several figures in print.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; "C.R.", "The Triumph TR7 Drophead" ("Sunshine Seven"), Motor Sport, Apr 1980, p. 35⁠source 10
Wheelbase: Coupe: Good sources agree.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5; Convertible: One good source.Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980⁠source 1; TR7 Sprint: One good source.Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5⁠source 5
Fuel tank: Coupe: Good sources agree.Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4; Clive Richardson ("C.R."), "The TR7 makes a quiet British bow", Motor Sport, Feb 1975, p. 30⁠source 2; Convertible: One good source.Canada. Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80⁠source 8; TR7 Sprint: One good source.The TR7 coupé, 1979. Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58⁠source 4

Dimensions and weight, by version
Item	Coupe	Convertible	TR7 Sprint
Length	4065 mm	4065 mm Length, Convertible Several figures in print. 4065 mmOne good source: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, UK⁠source 1 165.5 inOne good source: Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, Canada; the brochure's '411.5cm.' contradicts its inches⁠source 8	160 in
Width	1681 mm Width, Coupe Several figures in print. 1681 mmGood sources agree: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, 1980 specification⁠source 1 5 ft 6.2 inGood sources agree: Clive Richardson ("C.R."), "The TR7 makes a quiet British bow", Motor Sport, Feb 1975, p. 30, US preview car, 1975⁠source 2	1681 mm	5 ft 6.2 in
Height	Not in the sources read	1257 mm	Not in the sources read
Kerb weight	1070 kg Kerb weight, Coupe Several figures in print. 1070 kgOne good source: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, FHC, manual, 1980⁠source 1 1041 kgOne good source: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, FHC, automatic, 1980⁠source 1 over 19 cwtOne good source: Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63, UK launch car, 1976⁠source 3 2300 lbOne good source: Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5, 'around 2,300 lb (1,045 kg)'; all TR7s⁠source 5	1066 kg Kerb weight, Convertible Several figures in print. 1066 kgOne good source: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, DHC, manual, 1980⁠source 1 1036 kgOne good source: Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, DHC, automatic, 1980⁠source 1; "C.R.", "The Triumph TR7 Drophead" ("Sunshine Seven"), Motor Sport, Apr 1980, p. 35, 2,284 lb; '5 kg. lighter than the fixed-head'⁠source 10	Not in the sources read
Wheelbase	2160 mm	2160 mm	85 in
Fuel tank	12 gal	54.5 L	12 gal

Contents

Sources

Every source the site cites is on the sources page.

Primarymade at the time, by the maker or by people who were there
Referenceserious later work: clubs, specialists, magazines, books

Rover Triumph (reprinted by the TR Drivers Club), "Triumph TR7 Drophead: Structural Engineering and Specifications" (press release), Press release, for release 2 Mar 1980, the drophead's specification, with the fixed-head's weights, March 1980; engine: firing order, oil pressure, sump capacity; engine: power and torque, DIN; transmission: the automatic's ratios and torque converter; the axles; suspension, steering, brakes and wheels: turns lock to lock, turning circle, servo, the 1980 discs; dimensions: tracks, ground clearance; weights of both bodies, manual and automatic; electrical: system, battery, alternator; specification, engine; specification, fuel system; specification, steering; specification, transmission; specification, brakes; specification, suspension; specification, wheels and tyres; specification, wheels; specification, electrical; release text; specification, dimensions; specification, weights. trdrivers.com/articles21/tr7dhcengspec1.html Primary
Clive Richardson ("C.R."), "The TR7 makes a quiet British bow", Motor Sport, Feb 1975, p. 30, p. 30, the American preview car; p. 30, Lucas transistorised ignition on the American car; p. 30, the Dolomite's gearbox and ratios; the 3.63:1 axle; p. 30, the discs and the split brakes; p. 30, "13 ft. 8.3 in."; "exactly one ton"; p. 30, the retractable headlamps; Feb 1975 p. 30, layout paragraph; Feb 1975 p. 30; Feb 1975 p. 30, dimensions paragraph; Feb 1975 p. 30, space paragraph. motorsportmagazine.com/archive/article/february-1975/30/the-tr7-makesa-quiet-british-bow Primary
Clive Richardson ("C.R."), "Triumph TR7: sports car or two-seater saloon?", Motor Sport, Jun 1976, p. 63, p. 63, the British launch car; p. 63, the rev counter's red line; p. 63, the British rating set against the American; p. 63, turns lock to lock; p. 63, Leyland's claims; "though neither of the cars we tried would reach that maximum without help from inclines"; Jun 1976 p. 63; Jun 1976 p. 63, styling paragraph; Jun 1976 p. 63, opening paragraph; Jun 1976 p. 63, suspension paragraph; Jun 1976 p. 63, engine paragraph. motorsportmagazine.com/archive/article/june-1976/63/triumpuh-tr7 Primary
Clive Richardson ("C.R."), "The Triumph TR7", Motor Sport, Jun 1979, p. 58, p. 58, the Canley car; p. 58, "The in-line, slant-four engine is a variation on the Dolomite theme …"; the red line; p. 58, the five-speed and automatic axles; speeds in the gears at 6,000 rpm; p. 58, the discs; the test car's tyres; p. 58, the 1979 measurements; Jun 1979 p. 58, last paragraph; Jun 1979 p. 58, engine paragraph; Jun 1979 p. 58; Jun 1979 p. 58, handling paragraph; Jun 1979 p. 58, suspension paragraph; Jun 1979 p. 58, appearance paragraph; Jun 1979 p. 58, interior paragraph. motorsportmagazine.com/archive/article/june-1979/58/the-triumph-tr7 Primary
Aaron Severson, "Way of the Wedge: The Triumph TR7 and TR8", Ate Up With Motor, 5 Feb 2012, pp. 1–5, p. 2, sidebar: the iron block and aluminium head; p. 2, caption: the federal and California ratings at launch, the 1980 and 1981 figures; p. 3, the five-speed and automatic options, standard in 1978; p. 2, "wider H-rated tires"; p. 2, the American car's extra length; the weight; p. 3, the boot; p. 2; p. 2, sidebar; p. 2 (engine sidebar); p. 3; p. 2 caption. ateupwithmotor.com/model-histories/triumph-tr7-tr8 Reference
Keith Adams, "The Cars: Triumph TR7/TR8 development story", AROnline, updated 8 Feb 2024, the American ratings; Leyland's claims; text; timeline. aronline.co.uk/cars/triumph/tr7-tr8/bullet-development-story Reference
Malcolm Paris (compiler), "Triumph TR7 / TR7 V8 and TR8 Buyers Guide", TR Register, "approximately" the North American figure, no rating given; FAQ: the wheel fixing; performance table. tr-register.co.uk/resources/buyers-guide/triumph-tr7-tr8 Reference
Jaguar Rover Triumph Canada (Burlington, Ontario), Triumph TR7 Convertible (sales brochure), Canada, c. 1979–80, engine: the Canadian car's compression and DIN rating; the Canadian figures: discs, turning circle; the length in centimetres and inches; the boot; Department of Transport consumption; specifications, engine; specifications, steering; specifications, transmission; specifications, brakes; brochure text; specifications, suspension; specifications, wheels; specifications, body style; specifications, dimensions; specifications, capacities. archive.org/details/triumph-tr7-convertible-car-brochure Primary
Road & Track, "Triumph TR8: Good news from the other side" (road test), Jun 1980, pp. 76–79, the four-cylinder car's 3.45:1 axle; the TR7 convertible tested in September 1979. triumphtr8.com/tr8-press-articles-and-cuttings Primary
"C.R.", "The Triumph TR7 Drophead" ("Sunshine Seven"), Motor Sport, Apr 1980, p. 35, p. 35, the drophead's weight as reported; Apr 1980 p. 35, para. 2; Apr 1980 p. 35. motorsportmagazine.com/archive/article/april-1980/35/sunshine-seven Primary
John Miles, "Miles Behind the Wheel: America's TR8", Autocar, 1979 (May, according to triumphtr8.com), the comparison with Autocar's TR7 Autotest of June 1977. triumphtr8.com/tr8-press-articles-and-cuttings Primary
Walt Woron, "1980 Triumph TR8 Convertible: RT's Selection for 'Best New Sports Car of 1980'", Road Test (US), Jul 1980, pp. 16, 83–86, a TR7's fuel consumption over 3,088 miles. triumphtr8.com/tr8-press-articles-and-cuttings Primary
Paul Towle and Rex Holford (update) and Mark Elbers (update), "TR7 & TR8 Identification & Production Data Explained", TR Drivers Club, 1987, updated (© 2016), table b, 1981; TCT prefix entry; Solihull number series; ACH prefix entry; TCT prefix entry; Solihull number series. trdrivers.com/tr7_-_tr8_vin_numbers.htm Reference
Thos L. Bryant, "New from Britain: Triumph TR7 Convertible & TR8", Road & Track (reprinted by the TR Drivers Club), 1979, page 1, para. 2. trdrivers.com/articles21/newfrombritain1.html Primary
Graham Fountain, "The TR7 Sprint Story", TR Driver (TR Drivers Club), 1991 no. 2, text; para. 1. trdrivers.com/articles21/tr7sprintarticle-1991.html Reference
Simon Godrich, "TR7 Tribulations" (owner's checklist), TR Drivers Club, items 3 (cylinder head), 4 (cooling), 5 (water pump); items 4 (cooling), 5 (water pump). trdrivers.com/articles21/tr7tribulations1.html Reference

Contents