SpecBamf41 Posted October 17, 2011 Share Posted October 17, 2011 so ill be running sti pistons but im wondering if my bored may be to large. it was honed one time before. and will be honed again. am i still safe to run sti pistons. BNR18g on 93oct Link to comment Share on other sites More sharing options...
BAC5.2 Posted October 17, 2011 Share Posted October 17, 2011 What was it bored to? There are 3 different sizes of OEM piston (A, B, and C). [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
GTTuner Posted October 17, 2011 Share Posted October 17, 2011 Your block should be marked as to what size you need. I believe A is the largest and C is the smallest. What is the block marked? If you had C's or B's you may open up the bore to go with a larger one. Only way to know for sure is to measure run-out and taper. If that is within specs, do a LIGHT hone, re-measure and calculate piston to wall clearance before you buy pistons. Link to comment Share on other sites More sharing options...
SpecBamf41 Posted October 17, 2011 Author Share Posted October 17, 2011 the block is at the shop and ill know tomorrow. im buying used sti pistons. how do i know what size they are? BNR18g on 93oct Link to comment Share on other sites More sharing options...
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