Triumph TR4 group GT (1962)
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Specifications

Date Built Commission Number Remarks
Jul 7, 1961 CT 1 First production TR4
Jan 1, 1962 CT 2649
Jan 1963 CT 18605 Not verifiable as record is unavailable
Jan 1, 1964 CT 28709
Jan 1, 1965 CT 40193
Jan 6, 1965 CT 40304 Last production TR4
Jan 7, 1965 CTC 50001 First production TR4A
Aug, 1967 CTC 78684 Last production TR4A

Total 40304 units built
Technical spare parts

Homologation number 61 99 98 133 195 528 529
Homologation start 16/1/1962 29/1/1963 5/9/1963 1/6/1965 1/2/1966
Model TR4 TR4 IRS TR4A
Capacity 1991 cc 2138 cc

Standard wet-liner, straight 4 cyl, 4 stroke, petrol engine
2138cc
86.0 x 92.0 mm
9.0:1
100 BHP (75 KW) @ 4600 RPM
127 lbs/ft @ 3350 rpm
cast iron block with loose-fitted wet liners
3 thin-wall main bearings with replaceable shells
OHV, 2 valves per cyl - 8 valves total
2 x 1¾" SU Carbs - later with Zenith Stromberg 175 CD Carbs
water cooled

Front: unequal length double wishbones, coil springs and telescopic dampers
Rear: Live axle, half elliptic springs and lever arm dampers
Rack and pinion steering
Pressed steel disc with 5.50 x 15" tyres


Results in WSCC

Season races for GT 1.0+

Group GT, under 2.0cc classification is noted in brackets
Car entry, chassis number Car number/ result
Dayt Sebring Targa Florio Nurb Le Man d' Auvergne Tourist Trophy Bridgeh Paris
Team 3h 12h 1000km 24h 400km 1000km
George Waltmann #37, 30th
James Binford/ Howard Cole #38, spare car
Statistics
Starts/finishes 1/1 1/1

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At Sebring '63
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