Hi.

I have to change piston. It has marks on and cilinder is also in bad shape. Could someone tell me which piston I have? On top is written 03-20, 7595. Is it second or third one? If it is third one then I must change cilinder. Am I right, or is there one biger then third?

Samo

Edited September 18, 200916 yr by samo

There are 2 grades of piston there should be A or B stamped on it! this is stamped on when manufactured depending on early or late production! as for cyl it will after be replated and bored to the size of piston! was told all this by lampkins when i got a old techno piston and cyl replated!

I can not find letter A or B on Piston.

What would measurements for B Piston be?

Another question: I got a good offer from my supplyer for 250ccm Cyl with Piston. Now I have 270. Question is can I put in 270 engine 250 Cylinder without changing anything?

Can somebody please help me on this one...?

My bike is running again I put 250 Cylinder on and didn't have to change anything.

Cylinder i got has a B Piston and was pretty black on top. Dealer who sell me this assure that this is a new Cylinder with Piston running just an hour..

Is it possibile that you can get B Piston in new Cylinder?

yes

Thanks for replay Copemech.

Are there any bigger Pistons then B? In case that I need to hone Cylinder after time..