sotaorava Posted July 31, 2012 Share Posted July 31, 2012 how much lift i can go without valves hitting to pistons deck height +0,130mm gasket 1mm flattop pistons e31 or n42 heads if that makes any difference? or do i need to cut valve reliefs? Quote Link to comment Share on other sites More sharing options...
rayaapp2 Posted August 2, 2012 Share Posted August 2, 2012 That's really not a simple question. Valve event timing, clearance for expansion, and a lot of other variables play roles. Use the old rules the hot rod guys use and you will be fine. When in doubt measure, use clay, measure, and re-measure. Cut reliefs as required. Quote Link to comment Share on other sites More sharing options...
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