1962-1976 Triumph TR Specifications
The Triumph TR sports cars arrived in the 1950s and met with success over the next two decades. Here are specifications for the 1965-1972 Triumph TR models.
 This French Blue 1974 Triumph TR6 has the
steel factory hardtop. |
| 1962-1976 Triumph TR: Specifications (U.S. Market)
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| General | |
| Type | front-engine, rear-drive two-seat roadster |
| Wheelbase (in.)
|
88.0 |
| Overall length (in.) | 156.0 (TR4: 159.0)
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| Overall width (in.) | 57.5 |
| Overall height, soft top erect (in.) | 50.5 |
| Track, front/rear (in.) | 49.0/48.0 (TR6 50.25/49.0)
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| Ground clearance (in.) | 6.0 |
| Curb weight (lbs)
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TR4: 2,240; TR4A: 2,212; TR250: 2,268; TR6: 2,390, rising to 2,438
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| Weight distribution (percent front/rear)
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52/48 |
| Hip room, front (in.) | 2 x 21.5
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| Fuel tank (gal)
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13.5
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| Construction
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separate X-broad steel frame, all-steel bodyshell
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| Suspension, front
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independent, coil springs, unequal-length A-arms, telescopic shock absorbers (plus anti-roll bar for TR6) |
| Suspension, rear
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TR4, some TR4A: solid rear axle, half-elliptic leaf springs, lever-arm shock absorbers; Some TR4A, TR250, TR6: independent, coil springs, semi-trailing arms, lever,lever-arm shock absorbers |
| Transmission | 4-speed , synchromesh on all forward gears; overdrive opt |
| Brakes | hydraulic, font disc/rear drum |
| Swept area (sq in.)
|
370.0 |
| Steering | rack-and-pinion |
| Turns lock-to-lock
|
2.6 |
| Turning circle (ft)
|
33.0 |
| Final drive ratio
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3.7:1; overdrive, 4.1:1 |
| Tires | TR4: 5.90-15; TR4A: 6.95-15; TR250: 185SR-15 radials |
| 1962-1976 Triumph TR: Engines (U.S. Market)
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| TR4* | TR4A | TR250 | TR6 | |
| Type | ohv 1-4 | ohv 1-4 | ohv 1-6 | ohv 1-6 |
| Displacement (cu in.)
|
130.4
|
130.4 | 152.4 | 152.4 |
| (cubic cent)
|
2,138 | 2,138 | 2,498 | 2,498 |
| Bore x stroke (in.)
|
3.39 x 3.62 | 3.39 x 3.62 | 2.94 x 2.99 | 2.94 x 2.99 |
| (millimeters) | 86 x 92 | 86 x 92 | 74.7 x 76 | 74.7 x 76 |
| Compression ratio
|
9.0:1 | 9.0:1 | 8.5:1 | 8.5:1-7.5:1 |
| Carburetion | 2SU or 2 Zenith Stromberg
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2 Z-S | 2 Z-S | 2 Z-6 |
| Horsepower @ rpm (net)
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1.05 @ 4,700 | 1.05 @ 4,700 | 1.11 @ 4,500 | 1.06 @ 4,900** |
| Torque @ rpm (net)
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1.28 @ 3,350 | 1.32 @ 3,350 | 1.52 @ 3,000 | 1.42 @ 3,000** |
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*An optional TR4 engine had 1,991 cc (121 cid) with a 3.39 x 3.62-inch bore and stroke; horsepower was 100 at 4,800 rpm, torque 117 lbs/ft at 3,000 rpm. **Slight variation over the years
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| 1962-76 Triumph TR: Performance
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| TR4 | TR4A | TR250 | TR6 | |
| 0-60 mph (sec)
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10.9 | 11.4 | 10.6 | 10.7 |
| 0-80 mph (sec) | 20.9 | 23.1 | 20.0 | 20.0 |
| 0-100 mph (sec) | 46.3 | 48.8 | 39.0 | 39.0 |
| 0-ΒΌ mph (sec) | 17.8 | 18.5 | 17.8 | 17.9 |
| Top speed (mph)
|
102 | 109 | 107 | 107 |
| Compiled from various sources
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| 1962-1976 Triumph TR: Production
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| Total | Export | |
| TR4 | 40,253 | 37,661 |
| TR4A | 28,465 | 25,390 |
| TR250 | 8,484 | 8,464 |
| TR5 | 2,947 | 1,786 |
| TR6 | 91,850 | 83,961 |
| Total | 171,999 | 157,262 |
| How many cars were delivered to the USA? Accurate figures have never been released, but it is thought that at least 80 percent of all "export" TRs were sold in North America.
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