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Snaggggggggggg !!!!!!!!!!!!!

899 Views 6 Replies 5 Participants Last post by  Awesome 72
Just put in the new crank, but it seems there's a clearance problem with the bearings. Can someone who is familiar with this please get back to me so I can explain.
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Too much clearance!! The rear should be .002 to .003 at the most. Looking for an oil leak otherwise, not to mention oil pressure problems.

Factory specs-

Mains .002 to .003 Minimum Preferred .005 to .007 end play
Rods .002 to .0025 Side clearance .010 to .020

You guys just can't catch a break..

I'll tighten up the rear main a bit to improve oil control at the rear main seal, IF I'm looking at a really long term engine. If it's one that's going to be run hard and rebuilt then .002 is best. But that's just me. I've seen lots of factory built engines with .0015 rear bearings.

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