I have built and re-built many Vee motors for myself and for customers. Other than maybe a dropped valve seat, the majority of failures have been rod bearings, mostly #2 almost on a random basis. If caught early, maybe a new rod & a crank grind, if not caught, a complete Kabblamo. I think this has been the experience of most racers.
I think it would help the Vee community as a whole to pool our resources try to reduce this failure mode, therefore I'm asking folks to share their knowledge .
Is there a brand of bearings that works better?
What's the best rod bearing clearance?
I'm trying the Calico coating will it help?
I know a divider in the sump area is mandatory, what's the best design?
Other things to consider?
Running the oil level full when running, is this the best?
Inner or outer groove on the center main, any effect?