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250x piston oversize valves?
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Posted by: WildWestRacing

Can anyone tell me if there are any clearance issues when you install the 250x 12:1 piston on the 300ex with plus 1 oversize valves and a Web cam?

I know the correct way to check for this, but I'm hoping that someone on here could give me a heads up on this issue before I get to that point.

Thanks,
Bill

Posted by: Cody_300ex

A friend of mine had to have the intake side of his .080 11:1 300ex weisco piston milled after TC put in OS intake valves.

Posted by: WildWestRacing

Thanks!

Posted by: TarheelRedRider

Yes you will have to flycut the piston.

Posted by: chapmanmd

Bill, my 13:1 is flycut for +2 Kibblewhites.

Posted by: WildWestRacing

Mark,
Where in the heck did you find a 13:1 piston?

Posted by: chapmanmd

Powroll

Posted by: TarheelRedRider

By the way who sells a higher torq starter for the 300ex. Mine just isnt going last long due to the 12.5:1 . If I pump the gas before I try to start it most time it wont even turn over.