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MPL G50 and 7R Engine Options

Standard G50 Engine

All parts manufactured to 1962 specification with the aid of AMC factory drawings. Aluminium alloy crankcases fitted with alloy top hats line bored for perfect alignment. Needle roller drive side main bearings with oil seal, top quality timing side main bearings. The ultimate crankshaft assembly manufactured with larger integral mainshafts from EN36 forgings, pressed up 40mm needle roller big end. Carrillo con rod. Lightweight high compression Cosworth piston running in ceramic coated alloy bore. Big valve cylinder head with hard ‘lead free’ valve seats. Stainless valves controlled by coil springs with titanium collars running in Colsibro guides. Choice of camshaft profiles.

Standard 7R Engine

All parts are based on 1962 design, manufactured with the aid of AMC factory drawings. However all our 7R engines feature the G50 style lubrication system with external cambox feed hose and drain through the timing cover. Consequently all our 7R barrels, heads and camboxes are minus the oilways present in original pre 1963 engines, although the bosses are included in the castings to allow these oilways to be added if required.

Our standard 7R engines feature aluminium alloy crankcases fitted with alloy top hats line bored for perfect alignment. Needle roller drive side main bearings with oil seal, top quality timing side main bearings. The ultimate crankshaft assembly manufactured with larger integral mainshafts from EN36 forgings, pressed up 40mm needle roller big end. Carrillo con rod. Lightweight high compression Cosworth piston. Cylinder head with hard ‘lead free’ valve seats. Stainless valves controlled by coil springs with titanium collars running in Colsibro guides. Choice of camshaft profiles.

 
Standard Engine
Price.
G50 – complete kit of parts to 1962 design, enhanced in accordance with our standard G50 motor specification,
Excluding magneto and carburettor.
£ 8,400.00
7R – complete kit of parts to 1962 design, modified in accordance with our standard 7R motor specification,
excluding mag and carb.
£ 8,400.00
Options at extra cost:
Build engine to factory production race spec.
Extra Cost
£ 450.00
Magnesium crankcases £ 200.00
Twin plug cylinder head £100.00
Titanium conrod £ 350.00
High performance cam profiles from
£ 30.00
High performance valve springs £100.00

92 Bore Ultra Short Stroke G50 Engine      

Derived from our highly successful and reliable standard G50 engine, this engine is designed to give more power and faster acceleration with less weight, without sacrificing reliability. All parts are manufactured from original design castings.

Magnesium crankcases – unobtrusively strengthened. Lightweight 6.625” diameter crankshaft assembly on larger (1.125”) diameter mainshafts. Titanium conrod running on Ina bearing on 40mm crankpin, pressed up to crank assembly. Special 2 ring Cosworth piston, with 7/8 pin running in a ‘Nikasil’ ceramic bore in a shortened barrel. Nitrided piston rings and pin. Alloy head casting with hard ‘lead free’ valve seats, developed inlet port to suit 40 or 42mm carb. Twin spark plugs (10mm), ‘Colsibro’ valve guides. Stainless valves, special valve springs and titanium valve retainers. High performance camshaft. No mechanical tacho facility. Lightweight metric fasteners throughout. Engine _” shorter than standard G50. ‘Red line’ = 8.600rpm.

92 Bore Ultra Short Stroke G50 Engine

 

Price.
Ultra Short Stroke Engines 92 bore G50 engine built to our top specification,
excluding mag and carb
£ 10,500.00

Ignition and Carburettor Options

 

Price.
MPL Electronic ignition, self generating, mapped curve, single spark. £ 625.00
MPL Electronic ignition, self generating, mapped curve, twin plug. £ 700.00
Pal magneto, single spark, reconditoned not new £ 400.00
Pal magneto, twin spark, reconditioned not new £ 460.00
Amal concentric Mark 2 smooth bore carb £ 220.00
Gardener flat slide carb from
£ 270.00
G.P. replica carb £ 575.00
Remote float chamber for Gardener or G.P. carb £ 140.00

All price estimates are subject to confirmation and exclude delivery and .

 
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