Thread: bearing life

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Originally posted by joe bogger
I have never heard of a mich77 or mich H, Pat Where could i get these and do you have a time period to change the bearings before the bearings fail. The pro-racers must change them before they fail so they don't have to redo the crank and rods. they have alot of money in them to just change them every time they blow.

mich 77 or clevite 77 . clevite H typ and would not use them on a mild street engine .the mich p type are the 77 i have seen them go for two years + in a engine that gets the hell beat out of it . they look like new 6500 rpm. in big block 540 and up i used the H type with steel rods that go to8000 rpm. what needs to be talk about is adding running clearance and this has a lot to do with the rod not staying round at hi rpm and cap walk.