87bansheeguy Posted June 8, 2008 Report Share Posted June 8, 2008 im at about sea level. i want to run pump gas mostly of the time and maybe throw in some race gas every now and then i only have bolt on as far as fmf pipes,aftermarket reeds, uni pod filters,timing plate at +4, what is the biggest i should go in mill size and still run pump gas?? Quote Link to comment Share on other sites More sharing options...
J-Madd Posted June 8, 2008 Report Share Posted June 8, 2008 0.020'' should get you close to 150 psi. You'd be fine with +4 timing and pump gas. Quote Link to comment Share on other sites More sharing options...
87bansheeguy Posted June 8, 2008 Author Report Share Posted June 8, 2008 0.020'' should get you close to 150 psi. You'd be fine with +4 timing and pump gas. alriight can you convert .020 to cc's for me because i just orderd 21cc cool heads how will those work out? Quote Link to comment Share on other sites More sharing options...
brugal Posted June 9, 2008 Report Share Posted June 9, 2008 If you have a coolhead with 21 domes you wont need to mill anything. Quote Link to comment Share on other sites More sharing options...
J-Madd Posted June 9, 2008 Report Share Posted June 9, 2008 Be sure and do a compression check before running pump gas with those. I had a motor with 180 psi with 20 cc domes/don't remember what psi 21s are supposed to be at sea level. Quote Link to comment Share on other sites More sharing options...
okbeast Posted June 9, 2008 Report Share Posted June 9, 2008 alriight can you convert .020 to cc's for me because i just orderd 21cc cool heads how will those work out? Ya I think ur a little confused about this whole thing. Don't wanna be an ass here but instead of starting a new thread for every question try the search, it's not the best but it does work. And if you wanna do even better use this, http://www.google.com/advanced_search?hl=en Quote Link to comment Share on other sites More sharing options...
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