piston worn? help guys

[bansheefire]

i took a look at my pistons and they had some carbon rite on the top which i removed with a scothbright pad.my cylinder is looking good no scratches no wear and bike is running good but last time the pistons where changed was wen i upgraded which was in Feb/2003

[jankab]

i took a look at my pistons and they had some carbon rite on the top which i removed with a scothbright pad.my cylinder is looking good no scratches no wear and bike is running good but last time the pistons where changed was wen i upgraded which was in Feb/2003

If you have good compression and the pistons look good (no heavy wear) just run it. I've seen bikes that are 10-15 years old with the original pistons that run good

[Yaxy]

I agree, however you do need to consider piston to cylinder wall clearance. As a rule of thumb, I change rings every 2 yrs and pistons every 6. The rings I feel is a bit of an orverkill but it has worked for the past 16 years.

 

Chris

[00tbanshee]

check your pistons and make sure that there are no scratches on the skirts which you should be alright if you say that the cylinders look good, but just too be on the safe side if do i would change