Wheelbase: 7ft 7in
Track Front: 4ft 1.00in
Rear: 4 ft 1.25in
Turning circle: 34ft
Grade of oil: SAE 90
Disk size front: 11.06in
Drum size rear: 10in
Method of operation: Hydraulic, vacuum servo assisted as standard. Dual system for USA. Girling manufacture. Cable operated parking brake.
Rim size: 5J * 15
Tyre Size: 165 * 15
Tyre pressure: 21psi front, 24 psi rear
Bore: 83.36mm
Stroke: 78.90mm
Cubic capacity: 2912cc
Power output: 150bhp @ 5250rpm
Oil pressure: Approx. 60psi. 20psi at idle
Grade of oil: SAE 20/50
Sump Capacity: 7 quarts (without filter), 8 with. more..
Distributor points gap: 0.015in
Sparking plugs: N9YC
Gap: 0.025in
Jet size, main: 0.100
Needle recommendation: ST. (Spring loaded type: BAD)
Material: Ferodo
Number of springs: Single Diaphragm
Ratios: Manual, Overdrive, B-W AutoOverdrive (where fitted): 0.820
Top: 1.000, 1.000, 1.00-2.2
Third o/d (where fitted): 1.072
Third: 1.307, 1.307
Second: 2.058, 2.058, 1.45-3.1
First: 2.98, 2.98, 2.39-5.5
Reverse: 2.679, 2.679, 2.09-4.598Grade of oil: XL 20/50
Capacity: 5.25 pints or 6 pints with overdrive, automatic gearbox capacity including oil cooler is 14.5 pints which includes 5 pints in the torque converter
Ratio: Manual 3.07, o/d & auto 3.307
Later cars: Man 3.307, o/d 3.70
MPH/1000rpm: Manual Top: 24, o/d: 27
Later cars: Top: 22.1, o/d: 24, Auto: 22
Grade of oil: SAE 90EP
Capacity: 1.5 pints
Numbers built:
Year Roadsters GTs 1966 9 4 1967 182 38 1968 2596 2491 1969 1757 1925 Total 4544 4458
What is the correct figure for MGC engine oil capacity?
I think you will find it takes 7 quarts of oil to fill without the filter, just over 8 with filter. I just changed it in my GT-Automatic last weekend. I has assumed it was 6 and 7 with filter, but surprised it took more to bring it up to the dip stick mark. The Owners Handbook calls for 6.8 liters (12 pints) and 7.3 liter (14.5) with the filter. That's about as much as a Jag 4.2 and more than any American car i know of. I feel sure that the large oil capacity is provided to assist in cooling plus the oil cooler and filter both can drain down if the car sits and that would also increase the amount of oil at a change. I would fill to this level and then check the dip stick after restarting.
As a general rule, I always drive my car 15 minutes before changing oil so that the oil is very hot. I feel that the hot oil will run out faster and more completely and carry more sludge, if there is any, out with it. I also tilt the car so that the drain plug is the lowest it can possible be. I like the synthetic blends myself, 5-50 Castroil if my favorite.
Richard Sanders KSAMSMGC@juno.com