125-200cc Ring end gap on a CR135

I have an FBF 135 on my CR.

It was running a little soft all of a sudden so I pulled my 2yr old top end off.

Anyway the piston looks great and the ring end gap is .013". I was going to put a new ring on but the new ring measured .014" so what do I gain?

I figure stock eng gap on that 56mm bore should be about .009". I wonder why the new ring is .014"?

Should I buy another? Got a good place to get one? Halls?

As a related note I did find my PV shaft screw was loose on the shaft which was making my PVs slip a little. I hope when I put it back it will rip again.

Comments?

Romove the ring. Push It into the cylinder using the piston. Use a feeler gauge to seethe gap. And I found a site that says .018-.025 of an inch is fine.

measure you piston pin and the little end bearing that's where you get wear and if that is out of specs you will have less compression (softer) also if you ride to long with that situation it will eventual also damage you big end.

(pin and bearing should be replaced in a set)

Robert-Jan

I think i still have a new FBF 135 piston and ring that I would let go