jonsteffen 6 #1 Posted October 6, 2011 what is the max bore of a k-321 and has anyone know what the od on a k-321 is Share this post Link to post Share on other sites
kpinnc 11,000 #2 Posted October 6, 2011 This is straight from the Kohler manual- I have no idea what any modifications there are out there. I assume you're asking for cylinder ID, not OD, and have verified "K321" stamped just above the PTO shaft of the block: Standard bore new: 3.4995 to 3.5005 Maximum even wear: 3.503 Maximum out-of-round: .003 Maximum taper: .002 And just in case you're asking for the OD of the piston: Thrust face OD new: 3.4925 to 3.4941 Max wear: 3.491 Thrust face to bore clearance: .007 to .010 Share this post Link to post Share on other sites
