here's a dumb question....

[Banshee]

Boring the cylinder does not require any change in gas only milling the head.

[pro_tryer]

care to elaborate on that?

[Banshee]

If you mill the youi raise your compression in the motor resulting in the need for high octane gas. Boring your cylinder does not increase compression it only increase volume of the motor and does not require any changes to jetting or fuel

[pro_tryer]

so even if you get a big bore, although your probably should, you dont have to mill the head?

[MWC]

I am no expert either, but I think foshezy is right, increasing your compression is what will require different octane fuel. And I think rejetting, or at least checking, is a good idea after any mod.

[MWC]

Oh, sorry I didnt see your posts Jason, pro-tryer, I defer all my comments to Jason's expertise.....lol

[pro_tryer]

lol, sounds good....