Sands Posted July 1, 2013 Report Share Posted July 1, 2013 Wich type would you buy for maximum performance? VP110 Q16 C16 C23 Quote Link to comment Share on other sites More sharing options...
chere Posted July 1, 2013 Report Share Posted July 1, 2013 c23 in our race car works great..... Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted July 2, 2013 Report Share Posted July 2, 2013 Neither. Nitromethane and Methanol. Quote Link to comment Share on other sites More sharing options...
Sands Posted July 2, 2013 Author Report Share Posted July 2, 2013 Just wondering to use on Cheetah Cub 421 4mil, 22cc domes, Keihin PWK39, 4º timing, SBIF Shearer, VForce3. Maybe with 5 or 6º with race fuel. Quote Link to comment Share on other sites More sharing options...
kingofcans13 Posted July 2, 2013 Report Share Posted July 2, 2013 Not sure what octane your setup requires, but if you get chance check out motorsport 109. I think it might be the highest octane available that is unleaded. It is the wickedest smelling fuel ever also. Quote Link to comment Share on other sites More sharing options...
Wheelman Chassis Posted July 2, 2013 Report Share Posted July 2, 2013 Out of what you have listed Q16 by far, however you most likely do not need the octane. look into MR12 still oxygenated but only like 102 octane. Quote Link to comment Share on other sites More sharing options...
Wheelman Chassis Posted July 2, 2013 Report Share Posted July 2, 2013 depending on your state of tune specialblend... believe it or not, most people are not that close to "in tune".. I use q16 on a regular basis and if you are in almost perfect tune, the change in jetting is about 2-3 sizes.. Quote Link to comment Share on other sites More sharing options...
SlowerThanYou Posted July 3, 2013 Report Share Posted July 3, 2013 This is what we found with the Q16 running 300', 1/8 & 1/4 mile. Our baseline jetting for most conditions is 182 main using non oxygenated fuel (C14). We follow the high side of VP's fuel flow increase of 6% recommendation. The math works out to a 10.92 increase over the 182. While we have ran on a 192 main jet, our best runs on all surfaces come with a 195 main jet. FYI, we use 39-41mm PWKs. Quote Link to comment Share on other sites More sharing options...
possum Posted July 4, 2013 Report Share Posted July 4, 2013 STY, does that c14 use more fuel then say a regular sunoco 110? What was needed to be changed to go from C14 to Q16? Where did your times change with the switch? Im looking into running oxygenated possibly. Quote Link to comment Share on other sites More sharing options...
Oregon dunner Posted July 4, 2013 Report Share Posted July 4, 2013 I use c12 on a ported 421 and +7 timming and 19cc domes at sea level Quote Link to comment Share on other sites More sharing options...
SlowerThanYou Posted July 4, 2013 Report Share Posted July 4, 2013 STY, does that c14 use more fuel then say a regular sunoco 110? What was needed to be changed to go from C14 to Q16? Where did your times change with the switch? Im looking into running oxygenated possibly. We have never used Sunoco fuels. We have used VP 110 & Rocket Brand 111. The tune-ups are the same as C14. On our set-up or style of racing the only change from the C14 to Q16 is the main jet size. With other types of riding, you would probably have to richen the air screw, pilot jet & needle a little. As for the times, Q16 is worth an easy .10 in 300', around .15 in the 1/8 mile & 1/4 mile. A trusted source at VP says, Q16 makes more peak HP than Methanol, but Alky will make more torque. We have ran both fuels & find they are very close in performance, with Alky providing a very small performance advantage. Quote Link to comment Share on other sites More sharing options...
possum Posted July 4, 2013 Report Share Posted July 4, 2013 Thanks. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted July 6, 2013 Report Share Posted July 6, 2013 STY, does that c14 use more fuel then say a regular sunoco 110? What was needed to be changed to go from C14 to Q16? Where did your times change with the switch? Im looking into running oxygenated possibly.I used to run the Sunoco 110 for years and have been messing with a lot of the VP stuff lately. I built the new 4 mil to run on C12 and noticed that the fuel is not only more consistant, but it runs cooler and has a better resistance to detonation. Then this winter I couldn't get C12 at the local shops so I bought up some C14. Since it has a different gravity it is a much lighter fuel but that means the motor will consume more of it. I jetted up from a 162 in the winter on C12 to 168 on the C14. I did manage to get away with more timing on the bigger tracks with out any detonation or excessive heat increases. The latest fuel I have been playing with is the VP113. It is oxygenated and it really does work! Jetted the bike from the winter baseline of 162 for C12 to 172 for the VP113. I also gave the needle a clip richer and went from a 60 pilot to a 62. Came out of the turns harder and took the 7/8* of timing and ran way cooler. I did even try my other set of short track domes with much more compression and it was a throaty sum' bitch and it carried the long straights with out any detonation but it did start to build alot heat after about 10 laps. So the fuel isn't a cure all, but if you learn to play with it you can get some cool results. I have even thought of trying my short track domes with the Q16 on the half mile tracks but I think I need some shearers to let it over rev more then my rockets to allow that. Quote Link to comment Share on other sites More sharing options...
possum Posted July 6, 2013 Report Share Posted July 6, 2013 good info. Quote Link to comment Share on other sites More sharing options...
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