If this were a small block Chevy, or a Corvair for that matter, I would suggest that you check everything that contributes to this condition. You mentioned that the cylinders are okay, but did you check the distance from the centerline of the crank to the mounting boss on the block (maybe you need to shim out that 0.015"), are all the connecting rods (center to center) the same, what is the distance from the wrist pin centerline to the piston ring groove and piston dome?
Just a thought. Mark N952MW (res) -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf Of Jeff Scott Sent: Tuesday, December 09, -- "Wayne & Kathy Tokarz" <wktok...@telusplanet.net> wrote: I think the reason that your pistons are overextending -------------------- I've read his site. Since I bought this genuine Continental O-200 crankshaft new and have verified the part number, I don't think that's the case. In fact, the measurement confirms that the top of the top ring goes .015 past the top of the barrel, so it shouldn't be hanging in the top of the cylinder. However, take that .015, plus the clearance in the ring land, and the ability for the ring to twist a little bit, and it clearly does pop out into the head and hang. It only does so in one cylinder of the 4, fo at http://www.krnet.org/info.html
