- Oct 17, 2012
I Installed some economical pistons after a bore to .040" After about ten kilometres of wear, I pulled the engine apart for unrelated reasons but noticed some odd horizontal wear on the pistons. It looks to be machining marks when the pistons were made. The marks are only on the front and back. I'm thinking these marks are from the rings not being fully seated and started to wear an outer layer of the pistons? I was going to only replace the rings and do a hone, but now I am questioning the pistons themselves. I believe these are Emgos 19145/E040. What are your thoughts on the wear and should I reuse the pistons?