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crankcase clearance?

PostPosted: July 6th, 2006, 2:47 pm
by ZR800XC
OK, OK...I need some input on a project, as my knowledge ends right here. I'm building a billet case for a 650 Kawi to possibly make a replica of Sam Sessions 75 PDC Kalamzoo Racer. ANYWAY, it's all done except the bearing surface for the crank. Given a bearing's size, what size do I need to bore the cases to in relationship to this size. My guess would be .001" to .003" under. Does anybody have a spec or an opinion on this. Maybe some of you machine shop boys? My buddy's doing it as a project at a shop he works at and he needs the spec to finish up. Thanks guys..

crankcase clearance?

PostPosted: July 6th, 2006, 3:22 pm
by SRX 440A
are there going to be anti-rotation pins on the bearings?

crankcase clearance?

PostPosted: July 7th, 2006, 3:25 pm
by ZR800XC
NO. No pins, no O-rings, just a plain bearing.

crankcase clearance?

PostPosted: July 18th, 2006, 5:05 am
by 2275BADBIKE
BILLET CASES SOUND COOL,, HOPE THE PROJECT WORKS WELL FOR YOU!!