how much rod bearing clearance/ mild build ported pump
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how much rod bearing clearance/ mild build ported pump
Experienced engine builders how much rod bearing clearance are You building You're mild street engines with and why ?
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So do You recommend to the customers to run 5-w30 or 10-w40 or 20-w50 or? And I'm curious as to why You factor in that clearance as compared with the factory .001" ? Is it at least in part because You only run HV oil pumps ? Would You recommend the same clearance for a stock crank that has worn .001" off so it measures 2.099" and Clevite cb1776-a bearings which are aluminum (what vendor said) and of course .002" larger outside diameter for honing big-end of rods round . How much smaller inside of big end of rod than outside of bearing for a safe amount of crush that will hold bearings tight but not too much as to distort bearing too much ?
Last edited by chrisfrost; 09-22-2011 at 05:07 PM. Reason: forgot a question
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So do You recommend to the customers to run 5-w30 or 10-w40 or 20-w50 or? And I'm curious as to why You factor in that clearance as compared with the factory .001" ? Is it at least in part because You only run HV oil pumps ? Would You recommend the same clearance for a stock crank that has worn .001" off so it measures 2.099" and Clevite cb1776-a bearings which are aluminum (what vendor said) and of course .002" larger outside diameter for honing big-end of rods round . How much smaller inside of big end of rod than outside of bearing for a safe amount of crush that will hold bearings tight but not too much as to distort bearing too much ?