FWIW, the Lucas-rebuilt motor that just failed on my car after one race
weekend had a brand new ten tooth pinion. Presumably, it was designed to be
compatible with the ring gear even though it would normally expect a nine
tooth pinion, but wouldn't the added tooth reduce the torque transfer by
10%? And wouldn't that be a bad thing?
>That is a different problem altogether. It's still a good point though. It is
>a good idea to make sure that the corresponding gears mesh properly when
>engaged. I would expect that in your case there must have been an unusual
>noise. Any of these starter swaps should be checked periodically to be sure
>that there isn't this sort of situation. Paint or dye on the flywheel should
>indicate if the parts are working together satisfactorally.
>There are always unexpected problems when you start swapping components that
>aren't designed to be used together. That is part of race preparation and
>fabrication, and it is why those good at it should get top dollar for their