0.25 Oversize Piston's

[Cronos]

Do you need to rebore the stock cylnders or is there enough room to use the 0.25 oversie on a stock cylnder bore?

Cuz without the rings on it the 0.25 piston slips right through the stock bore no problems

 

[WacoBrian]

need to have a shop look at pistom and jugs

 

[Cronos]

Damn so i cant get away with using them on a stock cylnder, ok

 

[TwoJugs]

Probably bored already at one time. I think there would be some other signs of work needed if an oversize piston slipped through a standard hole.

 

[yamaman]

Yes, you should get an engineer to measure your bores BEFORE buying pistons. He will tell you what oversize is needed. The piston diameter should be between 0.050 & 0.055mm (0.002 & 0.022") smaller than the bore diameter!

 

[XSLeo]

With a stock bore being about 75.010, a .25 over piston being 75.25, it can't fit in a stock bore. I would get your bores measured. It may already be a .25 over.
Where did the .25 over pistons come from?