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Stan Thomas

Hi Mark,

I’m mystified by your rematks of “holes” in the crankcase. Dependant upon year the maximum “input points” (I.E. “holes” in the crankase) are the oil inlet from the pump/drippers, and a drain plug.

If you have surplus drilled holes, someone has been buggering about.

The standard crank bolt should be “locked” with a left-hand threaded nut – but if there is no material damage inside the crank chamber, chances are the person who biult the engine left it off. Lets hope he slipped whilst drilling the crank case holes and stabbed himself.