My 90 bhp has oil light on and hydraulic followers got noisey, and come to a sudden stop as I turned off the ignition key, so presuming crank gone, will inspect as time permits to confirm, I'm half expecting the chain drive to the oil pump to have jumped off! I have a spare engine hence the question about the cranks, I would appreciate any info about basic engine differences, the stroke should be the same being both being 1.4cc, I don't think there would be much difference between the basic engines, however I await to be enlightened ! Thanks in advance,