Can you run 93 octane fuel with an 11:1 piston in a Warrior, or do I need a 10.5:1 piston?

Ive got an 11 1/4:1 piston in my 93 warrior. I have had no problems what so ever using premium pump gas. The piston makes quite a bit of difference.[img]i/expressions/face-icon-small-tongue.gif[/img]

I run a 12:1 but need reallly good pump gas and octane boost or it pings under load.

used to have no problems when sunoco used to sell 94 octane round here.