Knight_Rider Posted January 31, 2007 Report Share Posted January 31, 2007 i checked my compression today in my freshly rebuilt motor it still has the stock head on it and i got a even 150psi in each cylinder unless the head has been milled before i thought they were stock 130psi? any1 got any thoughts? the compression test was done with the bike cold and throttle wide open Quote Link to comment Share on other sites More sharing options...
ThE_BaNsHeE_mAn88 Posted January 31, 2007 Report Share Posted January 31, 2007 thats would be my guess is that the head is milled. but i could be wrong.what kind of pistions did you get? Quote Link to comment Share on other sites More sharing options...
woodro77 Posted January 31, 2007 Report Share Posted January 31, 2007 are you sure your compression tester is accurate , maybe borrow a friends tester and check again , i just rebuilt my motor and it had 138 in each cylinder with a stock head and wiesco pistons and i thought that was a little high . Quote Link to comment Share on other sites More sharing options...
LiftdT4R Posted January 31, 2007 Report Share Posted January 31, 2007 are you sure your compression tester is accurate , maybe borrow a friends tester and check again , i just rebuilt my motor and it had 138 in each cylinder with a stock head and wiesco pistons and i thought that was a little high . Hmmm, not by much, last time I did a rebuild my Actron read 130 even, then after break in, and few months it only read 125, and it's been there ever since. Quote Link to comment Share on other sites More sharing options...
Knight_Rider Posted January 31, 2007 Author Report Share Posted January 31, 2007 are you sure your compression tester is accurate , maybe borrow a friends tester and check again , i just rebuilt my motor and it had 138 in each cylinder with a stock head and wiesco pistons and i thought that was a little high . mmmmmmm making me wonder if the head has been milled before. The compression tester i was using isnt a cheap one its a snap on one and i know its pretty accurate Quote Link to comment Share on other sites More sharing options...
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