Additional NotesFor the serious competitor these 12-bolt steel crankshafts are made to the highest quality. Made from EN40B and Gas Nitride Hardened these cranks use the original stroke which allows the standard main bearings to be used. They have been developed by us to be lighter, stronger and more aerodynamic than any other Healey Steel crank. An aluminium back plate COM245 with full circle lip seal COM248 is needed as well as a 12-bolt flywheel COM236 or COM236B. Also the block will require some machining on the 4th main bearing cap. Due to their strength and durability these cranks allow much higher revs and strengthen the bottom end. They must be fitted with our steel H section con rod sets COM234.
