adamhoud Posted June 1, 2009 Share Posted June 1, 2009 When everyone says the phrase "bumped compression to 8:1" on a turbo motor, what are they doing to get the extra .5 cr over stock? Milled head? Are some people just switching to the flattop pistons? Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted June 2, 2009 Share Posted June 2, 2009 Probably would have to mill - flattops would give ~8.3 to 8.5... Quote Link to comment Share on other sites More sharing options...
dhartig Posted June 2, 2009 Share Posted June 2, 2009 This is a great tool to see CR with various options: www.ozdat.com/ozdatonline/enginedesign/ Quote Link to comment Share on other sites More sharing options...
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