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CAR SPECIFICATIONS - MGB GT 72-74

 

MGB GT 72-74
VEHICLE IDENTIFICATION
Vin Plate  
Vehicle Number Location  
Body Number Location  
Engine Number Location  
Gearbox Number Location  
TUNE UP
Rear Axle Number Location  
Engine Firing Order  
Valve Rocker Clearance .015 in (.38 mm ) cold
Idle Speed 850 rpm 18V, 900 rpm 18GF, 18GH, 18GJ, 18GK
Static Ignition Timing  
Dynamic Ignition Timing 1971-1972 -- 16º BTDC @ 1500 rpm; 1973-1974 -- 11º BTDC @ 1500 rpm
Timing Mark Location Notch on crankshaft pulley, pointers on timing chain cover
Distributor Make/Type  
Contact Breaker (points) Gap .014 to .016 in (.36 to .41 mm)
Rotation of Rotor anti-clockwise
Dwell Angle 60 +/-3 degrees
Ignition Coil Make/Type  
Primary Resistance  
Spark Plug Make/Type Champion N-9Y
Spark Plug Gap .025 in (.64 mm)
Carburetor Make/Type Twin SU HIF4
Carburetor Main Jet .090"
Carburetor Main Jet Needle  
Carburetor Piston Spring  
VEHICLE & ENGINE
Length 12 ft 8 1/2 in (3.8 m), 12 ft 9 3/16 in (3.89 m) w/ overriders
Width 4 ft 11 15/16 in (152.3 cm)
Height 4 ft 1 3/8 in (125.4 cm)
Ground Clearance 5 in (12.7 cm) min.
Track Front 4 ft 1 in (124.4 cm)
Track Rear 4 ft 1 1/4 in (125 cm)
Wheelbase 7 ft 7 in (231.1 cm)
Turning Circle 32 ft (9.75 m)
Toe-In 1/16 to 3/32 in (1.5 to 2.3 mm)
Unladen Weight 2401 lb (1088 kg)
Curb Weight 2751 lb (1248 kg)
Gross Weight 2851 lb (1293 kg) max
Original Tire Size 165-14
Original Tire Pressure Front (Cold)  
Original Tire Pressure Rear (Cold)  
Replacement Tire Size 165SR-14
Engine Type  
Engine Displacement 1798 cc (109.8 ci)
Firing Order 1, 3, 4, 2
Compresssion Ratio 8.0:1
Engine Bore 3.16 in (80.26 mm)
Engine Stroke 3.5 in (89 mm)
Number of Cylinders 4
Oil Pressure Idle 10 to 25 lb/in2 (.7 to 1.
Oil Pressure Normal 50 to 80 lb/in2 (3.5 to 5.6 kg/cm2)
Ignition Type points
Fuel System Type  
Fuel Pump Make/Type SU type AUF 300 electric
Fuel Tank Capacity 13 gal, 14 gal with evaporative loss system
Cooling System Capacity 11.4 pints w/o heater, 12 pints w/ heater
Sump Capacity Early cars -- 9 pints, 9.6 pints w/ oil cooler; late cars -- 6 pints, 7 1/4 pints w/ oil cooler
Gearbox Capacity, non-overdrive 6 pints
Gearbox Capacity, overdrive 7 pints
Gearbox Capacity, automatic  

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