Grand Prix
Identifying Features:
2-seater GP body; alloy wheels, outside gear and brake levers; in-swept rear springs; supercharged models have hole high up in RH bonnet for relief valve exit. 35B, 35T have compression plate. All models have special oil feed pipe to front ball race
Years Made
(approx): 35 from 1924, others about 1926, until 1931
Number Made:
210 (90 supercharged), including T39
Engine:
No of cylinders: 8
Bore x stroke: 35, 35C: 60 x 88mm; 35B, 35T: 60 x 100mm
Capacity: 1991cc, 2262cc
BHP (approx): 35: 90; 35C, 35B: 120-130
RPM Limit (prudent): 35, 35C: 5,500; 35B, 35T: 5,000
Camshaft: sohc
Valves (per cylinder): 3
Camshaft drive: Front, bevel
Crankshaft bearings, No and Type: 3 + 1 Ball, 2 roller, roller rods
Supercharger (Roots): 35C and 35B only
Carburettor: 35, 35T: 2 Solex; 35B, 35C, 1 Zenith
Ignition: Dash-mounted magneto
Plugs per cylinder: 1
Firing Order: 1, 5, 2, 6, 3, 7, 4, 8
Clutch:
Type: Wet, multi-plate
Gearbox:
Location: Central, separate, 4-speed and reverse
Gear change lever: Outside, top forward
Rear Axle:
Normal Ratio: 15/54, 14/54, 13/54 = 3.6, 3.86, 4.15
Dimensions:
Wheelbase: 94.5in (2.4m)
Track: 47.25in (1.2m)
Weight (approx): 1650lb (750kg)
Brakes:
Location and Type: 4-wheel cable operated
Wheels:
Type: Cast, integral drum, detachable rim
Tyre size: original: 710 x 90; modern fitment: 5.00 x 19
Crossbreeding with Other Types:
Chassis and body used on T37, 39 and 51