gt14rider 1,058 #1 Posted 7 hours ago Hi all, I need some help. Changing the connect rod I took the piston off the rod before I marked its orientation. The piston has only a .020 . My question is should the. .020 be on the cam side or the starter generator side. New rod, used piston, new rings.the rod Oil hole on cam side. I ended up going through the engine. The cam broke, have a nother post about that. Anyway have some pics of my progress, and I know you guys like pictures. Any help would be appreciated on the piston. Share this post Link to post Share on other sites
squonk 45,729 #2 Posted 6 hours ago (edited) Look at the piston skirts. If you see more wear on one of them, it will be the "thrust side" Edited 6 hours ago by squonk 2 1 Share this post Link to post Share on other sites
gt14rider 1,058 #3 Posted 6 hours ago @squonk took a couple pictures. I'm going to pick pic 2 for the thrust side. What do you think? 2 Share this post Link to post Share on other sites
squonk 45,729 #4 Posted 5 hours ago Another way to tell. Quite often there is some "erosion " on the piston edge closest to the exhaust valve. Your 2nd pic has it. 1 Share this post Link to post Share on other sites
gt14rider 1,058 #5 Posted 4 hours ago Thanks, it looks like it has some carbon still on top, were you circled. That also puts the .020 mark on the cam side. Thanks again for the info, good to know. 1 Share this post Link to post Share on other sites
