Custom/Hybrid Waterdawg Kustomz ROK

Well boys, rode for about two hours yesterday. Ear drums are screaming this morning so it's going back in. Next question is race gas, I'm at my napa supplier and looking at Sunoco 110 octane that I could get for cost. Is it worth the money to run it instead of premium pump?
 

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
You need to properly jet your carb(s) to account for the extra oxygen. Generally speaking, you need to jet richer.
 

Cannibal

Tasty Human
Location
Summit Lake, WA
Methanol and Ethanol also contain their own oxygen. In comparison to straight 100% gasoline that runs at 14.7:1 stoichiometric, Methanol is 6.47:1 and Ethanol is 9:1.

If you are already running E10 gasoline, that averages out to 14.13:1. When you take a look at Sunoco 260 GT that has 3.3% oxygen, the stoich on that is 13.9. So yes, you might need to go up a jet size to make up for this.
 
Cannibal, I didn't pass math class in high school but that post right there made more sense to me than anything. Question is, if I'm running standard premium pump gas now... W/ 190 psi, roughly how many jet sizes would I have to go up for 110 octane?
 
I love it. U can def tell its a cut up sxr cuz it carves like one!! Couldn't really try anything yet on it cuz my exhaust was Jerry rigged and keep pulling the coupler, and no turf but so far it's light and seems to be backflip capable idk. The first fifteen minutes of riding I really hucked a setup wake and it came around and landed on top of me by itself lol
 

tensecrnr

boost everything
Location
LA$ VEGA$
freaking sick...the few i rode i luved...i think u have the new version of the rok hull bigger pump shoes area and a few things jeff said... a few people i know are thinking of gettin one...
 
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