Only pulled 1 motor apart W/ torn up tensioner, I assume it was from lack of assembly lube on chain/tensioner when it was assembled (I did'nt build it originally, so I don't know for sure). I have same one on a circle track motor for past 5 years..... 7600-7800 RPM all night long with a rollmaster. It looks same today as day I installed it first time. You need to lube the hell out of chain/tensioner when assembling... The chains hardly get any oil, so break in is where the issue is going to come in @, can't install one dry & expect it to live. Just my I put one on every engine that I build with a chain....
I put one on every engine that I build with a chain....
