Tom Rae wrote:Thank you for your comprehensive reply. I do have the 125e rods but finding a Lotus crank might be difficult? I also have the 2731 block but no caps so I iwill need new caps and therefore line boring. I am only planning to use the engine for road use only so could I get away with using the 2731? I also have the possihility of using a 120e block which has main caps. Thanks again.
Tom
Tom, if you want a decent quality Lotus crank Nick (who responded below) is your first port of call. One of the best in the Lotus world.
The 120e block would need a modification to the sump baffle if using it with a 6-bolt sump as the 120e block uses a screw-in pickup pipe and they used a different sump. It is IMHO that the screw in pick-up pipe is the better system though as it allows the oil pick-up basket to sit centrally in the sump. The push-in pick-up pipe sits to one side, and is a pain to remove from the block if you wish to do so.
avro wrote:Tom
If you choose to use a Lotus crankshaft with your 2731 or 120E cylinder block or any other block that has not previously been used in a Lotus engine they will require just a small amount of machining to clear the larger counterweights of the Lotus crankshaft at both ends of the block.
Nick