V.P. vs. SUNOCO

J.R. Haddad · 07-08-2015, 11:40 PM

To people that normally run C-11, have you tried Sunoco? If so, which one did you run, and what were the results? Thanks, J.R.

jmarkaudio · 07-09-2015, 11:11 AM

You won't find a Sunoco product that will vaporize as easily as C11. Look at the RVP numbers, the higher the better. And also look at the evaporation curve. Those properties provide more equal distribution, allow the overall mixture to run leaner and make more power. On a Stock or Super Stock engine with a less than ideal intake design that will be key to making the most power.

Greg Hill · 07-09-2015, 01:43 PM

I have dynoed the motor in my car,(before I sold it), which was a 10.5 compression small block stocker, with Sunoco Blue and C11. C11 made a couple of more hp average, but the carb needed to be a touch richer for C11 than Blue. Blue is almost identical to C12. I would think in a higher compression motor Blue or C12 might be better.

Ed Wright · 07-09-2015, 02:18 PM

Mine likes to be a little richer with C11 as well. Personally, I do not care for Sunoco. It likes to be run a little leaner, but does not show the same air/fuel ratio on my data logger run to run. The VP does. Mine also runs a little quicker on C11. It's a pain having to haul my fuel in the trailer, I don't feel it is safe. But, since NHRA won't allow VP sold at the track, that is what I am forced to do. Buy it here and take it with me. I hope Sunoco looses their butts on what they paid NHRA for this crap.

07-08-2015, 11:40 PM	#1
J.R. Haddad Senior Member Join Date: Jun 2012 Posts: 784 Likes: 935 Liked 1,464 Times in 307 Posts	V.P. vs. SUNOCO To people that normally run C-11, have you tried Sunoco? If so, which one did you run, and what were the results? Thanks, J.R.

07-09-2015, 11:11 AM	#2
jmarkaudio Junior Member Join Date: Apr 2008 Posts: 83 Likes: 0 Liked 0 Times in 0 Posts	Re: V.P. vs. SUNOCO You won't find a Sunoco product that will vaporize as easily as C11. Look at the RVP numbers, the higher the better. And also look at the evaporation curve. Those properties provide more equal distribution, allow the overall mixture to run leaner and make more power. On a Stock or Super Stock engine with a less than ideal intake design that will be key to making the most power.

07-09-2015, 01:43 PM	#3
Greg Hill VIP Member Join Date: May 2006 Location: Louisville , KY Posts: 1,995 Likes: 68 Liked 279 Times in 68 Posts	Re: V.P. vs. SUNOCO I have dynoed the motor in my car,(before I sold it), which was a 10.5 compression small block stocker, with Sunoco Blue and C11. C11 made a couple of more hp average, but the carb needed to be a touch richer for C11 than Blue. Blue is almost identical to C12. I would think in a higher compression motor Blue or C12 might be better. __________________ Greg Hill 4171 STK

07-09-2015, 02:18 PM	#4
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: V.P. vs. SUNOCO Mine likes to be a little richer with C11 as well. Personally, I do not care for Sunoco. It likes to be run a little leaner, but does not show the same air/fuel ratio on my data logger run to run. The VP does. Mine also runs a little quicker on C11. It's a pain having to haul my fuel in the trailer, I don't feel it is safe. But, since NHRA won't allow VP sold at the track, that is what I am forced to do. Buy it here and take it with me. I hope Sunoco looses their butts on what they paid NHRA for this crap. __________________ Ed Wright 4156 SS/JA