can some one tell me the size of reamer to use for new bushing at wrist pin on triumph 650 bonneville ...seems i forgot to check them with my new pistons ...now i see i have to replace them on one side as there is a bit of play .....oops should have done it when i had them on the bench ! thank you ....i did my cam bushes fine and they are nice ! ...so i know i can ream the wrist pins ...thank you again for all the help advice , general slander !
The pin fit is only half the job. The other part is making sure that the new bushing holds the pin parallel with the big end. Even honing the bushing does not insure that the bushing is finished to size and square.
If the piston is cocked side to side, oil control can be an issue, and it puts undue stress on the rod and rod bearing.
Re: wrist pin reamer for 650 bonneville
#433878 05/08/128:17 am05/08/128:17 am
I had to replace a small end bush on my 3TA and just followed the manual, not knowing that it was better to have them line bored when stripped. Anyway, I took the whole bottom end down to the garage and explained what had to be done. You have to line ream them using the other small end as a guide. It was ok and the bike ran fine. I checked the pistons after a fair bit of running and they were fine. Was only a 3TA though. As a teen I wouldn't have relished stripping the whole bottom end for one small end bush! Line boring is a safer bet.