Thread: bearing life

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Originally posted by HWORRELL
They spin from lack of oil wich galls the cranks main or rod journal and causes the crank to grab the bearing and turn it in its seat.....
personally I've never used anything but Clevitte 77 bearings,raced a Fontana powerd midget for a number of years turning it an average of 8500 rpm and never had a bearing failure, bearings always looked like new at the end of season rebuilds.......

yes clevitte77 is a dam fine bearing .but i think what maybe happing is the rod will not stay round and if it a stock type rod i know it will not at hi rpm. and this will make rod grab the crank. NOT IN A GOOD WAY so running added oil clearance help keeps it alive this is where a bit more clearance help s with stuff that is moving at hi rpm and not staying round