FIA

(Difference between revisions)

Revision as of 08:34, 5 November 2012

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