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The Fédération Internationale de l'Automobile (FIA) is a governing body for racing rules. Datsun 1200 Group 1 FIA recognition includes twin-carb engine, rear spoiler, and 5-speed transmission.
2-dr sedan
Manufacturing started Nov 1969. FIA listing: July 1970
- Car with no interior heating
- Wheelbase 2300 mm 90.55 in
- f track 1240 mm 48.82 in
- r track 1245 mm 49.02 in
- length 383 cm
- width 149.5 cm
- height 139.0 cm
- fuel tank 10.6 Gallon US
- Weight 635 kg (1399 lbs) with normal equipment, water, oil
and spare wheel but without fuel no repair tools.
- Jack point ground clearance 160 mm
- f seat weight 10 kg each
- f bumper 3.0 kg
- r bumper 3.7 kg
- wheels 12 in x 4 in weight: 4.2 kg
- steering 3.3 turns
Engine
- hp 68ps JIS @ 6,000 rpm
- max rpm 6,400 rpm (64 ps)
- max torque 9.7 kg-m at 3,600 rpm
- max speed car 150 km/hour
- comb chamber 36.6 cm3
- flywheel weight 9.5 kg
- Flywheel with all turning parts 13.1 kg
Camshaft
- valves 29 mm 1.14 in
- max lift 9 mm 0.35 in
- opens BBDC 56 degrees +- 7 degrees
- closes ATDC 12 degrees +- 7 degrees
- exhaust ports 26w x 28h with 3 mm radius +- 1.5 mm
- center ex port 69w x 28h
- intake ports 28/27 mm circle
Carburetion
- Carb Hitachi DCG306-1 down-draft
- Primary: 26 mm, Secondary: 30mm
Added Coupe and 4-dr sedan
- weight 640 kg 1411 lbs
Amendment March 1970 for A12GX engine
Engine
- compression ration 10.0
- combustion chamber 29.1 cm3
- valve opens BTDC 20 degrees +- 7 degrees
- valve closes ABDC 56 degrees +- 7 degrees
- valve opens BBDC 58 degrees +- 7 degrees
- valve closes ATDC 18 degrees +- 7 degrees
- Carb Hitachi HJE38W side-draft (two carbs)
- exhaust ports 27w x 29h +- 1.5 mm
intake ports 30 mm circle with 4.5 mm elongated section (30 x 34.5 oval?)
- hp 83ps @ 6,400 rpm
- max rpm 6,800 rpm (80 ps)
- max torque 10.0 kg-m at 4,400 rpm
- max speed car 160 km/hour
Group 2, but not Group 1 allowed:
- Rear spoiler
- Wheel flares