piston change

[Getoviq95]

HI gyus ,i opened my engine to clean a power valve ,and i decided to change a piston .My cylinder is size A ,but my piston is vertex size B-71.95 .My question is what size to be a new piston .If i put a next size 71.96 ,the clearance will be only 4/100mm ,which is too small .What is the size of A cylinder i think is 72.00mm ?And second question ,why wiseco pistons are only in one size ?
http://prikachi.com/images.php?images/189/8816189l.jpg

 

[Moto7man]

An "A piston" is smaller than a "B piston." Put in another B piston.

 

[Getoviq95]

How so my B piston(71.95mm) is smaller than B piston ?

 

[GGRider01]

I don't understand your question..

Though, I will say the same thing. Run a B piston.

Pro X makes A, B and C sizes. Here are the part numbers:

01.7300.A
01.7300.B
01.7300.C

 

[Moto7man]

Wossner A piston=72mm bore
Wossner B piston=72.01mm bore
Wossner C piston=72.02mm bore

 

[Getoviq95]

Wossner A piston=72mm bore
Wossner B piston=72.01mm bore
Wossner C piston=72.02mm bore

http://www.ebay.co.uk/itm/Wossner-P...563998?hash=item3d1d3d55de:g:ht8AAOSwGIRXYBHU see this one wossner B is 71.95mm the same size like mine

 

[RBrider]

Your cylinder was probably worn a little and a previous owner installed the B piston to account for the wear. I'd put the Wossner B piston in it, if it were mine.

RB

 

[Getoviq95]

What do you think about the condition of my current piston is there still life in it or better not to risk and to put new one .Thank you !
]https://scontent-vie1-1.xx.fbcdn.net/v/t34.0-12/13565544_909027835910471_529089834_n.jpg?oh=e9731f5619e72b697d11edfd54bb5fe1&oe=5779DE98
https://scontent-vie1-1.xx.fbcdn.ne...=b624b0814db4acf90d3374e41ca8cac1&oe=5779F001
https://scontent-vie1-1.xx.fbcdn.ne...=d45cdd09fc17ecbd0e2ceca2b1b9bc19&oe=577A1120

 

[Getoviq95]

What do you think about the condition of my current piston is there still life in it or better not to risk and to put new one .Thank you !
https://scontent-vie1-1.xx.fbcdn.net/v/t34.0-12/13565580_909027855910469_1129324536_n.jpg?oh=b624b0814db4acf90d3374e41ca8cac1&oe=5779F001[/url]
https://scontent-vie1-1.xx.fbcdn.ne...=d45cdd09fc17ecbd0e2ceca2b1b9bc19&oe=577A1120

https://scontent-vie1-1.xx.fbcdn.ne...=e9731f5619e72b697d11edfd54bb5fe1&oe=5779DE98