Chuck,
Here are the specs from the PCS. As you see, the TR-5 got PI, while the
TR-250 got carbs. If my memory serves me, Triumph ran their TR-250 in US
events as a TR-5. Interestingly the SCCA did not give a break to the carbed
models, forcing them into C-Prod with the PI cars.
Hugh
Manufacturer: Standard Triumph Class: C
Model: TR 250
ENGINE
Manufacturer Triumph
Type OHV, 6 cyl., in line
Bore x stroke 2.94" x 3.74"
Capacity 2498 cc
Head material C.I.
Block material C.I.
Valve head dia.
Intake 1.438"
Exhaust 1.26"
Carburation Two 1.75" Stromberg CD 175
TRANSMISSION AND DRIVE TRAIN
Clutch Diameter: 8.50"
Gearbox
No. speeds forward: 4
Ratios:
Std. Alt. Alt. Alt. Alt. Alt.
1 3.14"
2 2.01"
3 1.33"
4 1.00"
5
Overdrive
Make & Model: Laycock
Ratio .821
Final drive ratios: 3.7, 4.1, 4.3, 4.55, 4.87
CHASSIS
Wheelbase 88"
Track dimension, Front 49.8"
Track dimension, Rear 49.3"
Wheel diameter 15"
Rim width 4.5"
BRAKES Standard Alternate
Front: 10.75" Disc
Rear: 9" Drum
CAPACITIES
Official weight 1980 Lbs. Radiator capy 6.6 Qts.
Fuel tank capy 13.5 Gal. (Std)
25.2 Gal. (Alt)
ALTERNATE SPECIFICATIONS
Two 1.75" SU Carbs
Manufacturer: Standard Triumph Class: C
Model: Triumph TR-5
ENGINE
Manufacturer Triumph
Type OHV, 6 cyl., in line
Bore x stroke 2.94" x 3.74"
Capacity 2498 cc
Head material C.I.
Block material C.I.
Valve head dia.
Intake 1.438"
Exhaust 1.26"
Carburation Lucas MKII Fuel Injection 54730923 1.75"
Lucas MKII Pump
TRANSMISSION AND DRIVE TRAIN
Clutch Diameter: 8.50"
Gearbox
No. speeds forward: 4
Ratios:
Std. Alt. Alt. Alt. Alt. Alt.
1 3.14"
2 2.01"
3 1.33"
4 1.00"
5
Overdrive
Make & Model: Laycock A
Ratio .821
Final drive ratios: 3.45, 3.7, 4.1, 4.3, 4.55, 4.87
CHASSIS
Wheelbase 88"
Track dimension, Front 49.8"
Track dimension, Rear 49.3"
Wheel diameter 15"
Rim width 4.5"
BRAKES Standard Alternate
Front: 10.75" Disc
Rear: 9" Drum
CAPACITIES
Official weight 1980 Lbs. Radiator capy 6.6 Qts.
Fuel tank capy 13.5 Gal. (Std)
25.2 Gal. (Alt)
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