CLASS RACER FORUM - View Single Post - Any performance difference in Sunoco Purple?

Mike Croley · 02-25-2015, 12:02 PM

Going from last years official brand of 110 to this years official brand shouldn't require major changes. But here's a rule of thumb for jetting when changing brands or blends of race fuel. The rule of 10.

Example... moving from a fuel that has a SG of .710 to a fuel that has a SG of .718 would require no change in jetting.
Moving from a fuel with .710 SG to a fuel with SG of .721 would require a jet change of 1 jet size.
Moving from a fuel with a SG of .710 to a fuel with a SG of .730 would require a change of 2 jet sizes.
The same rule would apply going from a larger SG to a smaller SG.

02-25-2015, 12:02 PM	#6
Mike Croley Member Join Date: Apr 2010 Posts: 182 Likes: 0 Liked 0 Times in 0 Posts	Re: Any performance difference in Sunoco Purple? Going from last years official brand of 110 to this years official brand shouldn't require major changes. But here's a rule of thumb for jetting when changing brands or blends of race fuel. The rule of 10. Example... moving from a fuel that has a SG of .710 to a fuel that has a SG of .718 would require no change in jetting. Moving from a fuel with .710 SG to a fuel with SG of .721 would require a jet change of 1 jet size. Moving from a fuel with a SG of .710 to a fuel with a SG of .730 would require a change of 2 jet sizes. The same rule would apply going from a larger SG to a smaller SG.