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Joe DeMarzo · 11-01-2007, 06:52 AM

Greg, it is in the jetting. I have used sunoco purple until this year and never saw any difference with the right jeting. In fact this year I used c-11, came in the car when I recieved it, changed to c-12 and it picked up .06. because it was to rich with the jetting. You will probably need to lean it out, C-12 burns hotter that the sunoco purple. Great article years ago about low compression motor and the rpm it takes to burn racing fuel, if I find it I will forward it.

Good Luck

11-01-2007, 06:52 AM	#2
Joe DeMarzo Senior Member Join Date: Oct 2002 Location: Mahopac, NY Posts: 666 Likes: 48 Liked 113 Times in 9 Posts	Re: Gas question?? Greg, it is in the jetting. I have used sunoco purple until this year and never saw any difference with the right jeting. In fact this year I used c-11, came in the car when I recieved it, changed to c-12 and it picked up .06. because it was to rich with the jetting. You will probably need to lean it out, C-12 burns hotter that the sunoco purple. Great article years ago about low compression motor and the rpm it takes to burn racing fuel, if I find it I will forward it. Good Luck __________________ Joe DeMarzo 1317 STK