Barry R Posted November 11, 2020 Share Posted November 11, 2020 Need advise, I’m not an expert and need help. rebuilding my engine and I am fitting new pistons. l’ve got new pistons to fit and new wrist pins. but my question is, should the piston be fitted permanently to the wrist pin? should there be split pins though the pistons and the wrist pins? Am I right in thinking the wrist pins could start turning in the pistons. There are two holes? Link to comment Share on other sites More sharing options...
Oldtech Posted November 13, 2020 Share Posted November 13, 2020 Yes there has to be a way of securing the pin. The original way - not that good, was a cotter pin in one of the holes . If they are new pistons the likely way will be a snap ring groove in the outside ends of the pin . Turning isn't the issue, the pin coming out and scoring the cylinder is the problem. Snap rings should come with new pistons. Link to comment Share on other sites More sharing options...
Barry R Posted November 13, 2020 Author Share Posted November 13, 2020 I have new snap (circlips) on each end. was more worried about wrist pin turning. thanks Link to comment Share on other sites More sharing options...
southpaw Posted November 13, 2020 Share Posted November 13, 2020 Barry, The wrist pin is meant to turn, if it is not a press fit or has a pinch bolt. The holes are for splash oiling. Good luck with your rebuild. Jim 1 Link to comment Share on other sites More sharing options...
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