Race Fuel Question
 

Has any of the Stockers out there use or tried Sunoco Race Fuel ??

Will it pass at Fuel Check ??

I have a low compression SBC, will 100 octane be sufficient for my motor ??

I'm currently using VP C-11.

Re: Race Fuel Question
 

I've had problems with Sunoco purple passing fuel check. Switched to blue and no problems. C11 will make a little more power in our motors but it costs a whole lot more.

Re: Race Fuel Question
 

Have used Sunoco Purple for years.There has been some fuel check issues in the past,but last year seemed fine.Sunoco Purple is 110 octane.

Re: Race Fuel Question
 

^^^^^ This what I have seen. Mine is faster with it, and never a fuel check issue. I can't imagine changing.

Re: Race Fuel Question
 

Ed there was only 1.5 hp difference on the dyno between C11 and Sunoco blue on our motors. Blue only costs about .25 more than purple and it always checks right in the middle.

Re: Race Fuel Question
 

Mine shows more than that, but I had to fatten it to find it. Nearly ten ft lb, but it likes to run from 12.5-1 to 12.8-1 A/F, leaner toward the top. Mine liked the Sunoco best around 13-1.

Your results may vary. LOL

Re: Race Fuel Question
 

Greg, your motors are probably a bit more compression than my 305.
I think mine is 9.5-1

The other question is: Sunoco Blue is what octane ??

Can i use 100 Octane ????

Re: Race Fuel Question
 

I have never ran anything but Sunoco Purple (110). I have never had any fuel check problems in Divisions 3, 4, and 5 with tech saying anything about it even being questionable on passing. For the cost it is the way to go for my car.

Sean

Re: Race Fuel Question
 

Pete

Sunoco will pass fuel check. Buy it in quantity and be sure it's fresh. Rick told me Sunoco finally updated info to NHRA last year, all should be good at fuel check.

Your engine will run on Purple but Blue is faster burning and more consistent batch to batch. Spoke to engineer from Sunoco a few years ago at PRI when doing some research. You will need to change your fuel and timing maps.

The best thing to do is buy a drum from a good dealer and store it properly. The fuel will not degrade for a year if in closed metal container out of heat and sun.

Hope this helps.

Re: Race Fuel Question
 

When I ran my LT-1 Firebird......in 2006-2007

I had C-12 fail and it was fresh from the tracks supplier that very day and came out of a new drum..... at Cecil County. A lot of guys had issues that day from what I saw....
I also had Sunoco purple fail up at Lebanon Valley.....I brought it with me and it was fresh...

After those two incidents I used C-11 and drained my fuel cell before going to any NHRA race. Bought fresh fuel when I got there. C-11 always passed. It was no faster.....and the fumes in my trailer were terrible from it...

In 2011 Larry Pappas let me race that car (he owns it)and I ran it at Island the week before the Dutch....I used Sunoco purple and ran it all day.....went to the final of a gambler race and made about 7-8 runs.....very consistant and ran well for the weather,

Went to the Dutch.....drained the fuel and put fresh C-12 in it....Passed fuel check no problem and ran a little faster but it was more the weather and the track than the fuel making it faster. Maple Gove that time of year is generally faster than Island by a good amount.....I went no more than .05 faster....

An Lt-1 has over 10-1 compression with aluminum heads.....

The only reason I ever used C-11 was because it always passed and C-12 had a reputation for failing......as did the Sunoco purple....

Re: Race Fuel Question
 

The LT1 compression is on the high side of what they recommend for C11. Tuning for it showed me a little. This past year I had 5 gal left over from 2012. Took a sample to be tested at the first 2013 race. It passed just fine. I went ahead and used it. Fresh fuel ran exactly the same. As with the Sunoco, it likes it's own tuneup. I can make mine run a tad quicker on C11 than C12 or Sunoco. I really like the zero fuel check issues. C11 costs a little more, but what is cheap about this anyway?

Re: Race Fuel Question
 

Ed, I use C-11 Now Myself. Just wondering if that's Overkill for a 305 low comp motor is all.
But, if their are more issues with Sunoco than i'll stick with VP.

And your right, theres nothing cheap about racing, (only the pay-outs )

Re: Race Fuel Question
 

lol!

Re: Race Fuel Question
 

I get Sunoco race fuel from a gas station that pumps it from the ground, it's about $8.50 a gallon, I've had it sit in a container for over a year and loose it's color, it still passed NHRA fuel check. I was told to put some fresher fuel in the car just to get the color back. Never had a problem passing with Sunoco. I went to the PRI show a couple of years back and asked the Sunoco representitive how long the shelf life for the fuel is, he told me that it was just about 2 years.

Casey Miles
248H "F" NHRA Stock!

Re: Race Fuel Question
 

I've used Sunoco Purple for decades, in my bracket car and in IHRA since 1999. It's been consistent and good, even what was in the tank through the off season. The only time I failed IHRA fuel check was in Norwalk when I couldn't get any in time from my usual source and bought some from a local speed shop. The "flunkie" behind the counter sold me something that was purple, which was either "cut" or a completely different brand. I got some locally in Norwalk. I plan to use Sunoco Purple when I get around to NHRA Stock as well.

Year ago I tried the "Blue" for a short time, couldn't find any advantage in my particular application, and went back to Purple.

Re: Race Fuel Question
 

Myron
What's the diff in octane between the Blue n Purple ???

Re: Race Fuel Question
 

Pete,
This chart shows 112 for the blue and 110 for the purple. They are listed at the very bottom.

http://www.racegas.com/fuel/compare

Re: Race Fuel Question
 

I have run Sunoco blue in the past with good results performance wise. I now run c-12 just because I don't want the problems with fuel check. Here in Div 2 the fuel check guy always gave me a hassle on the color of the fuel when I was using Sunoco. I got tired of that crap. I have had no issues with the C-12 passing fuel check. I have not seen any major differences in performance on the track with C-12, C-11 or Blue. Seems like NHRA wants you to use the VP products.

Re: Race Fuel Question
 

We've run both VP and Sunoco purple in both of our cars with 305's. Sunoco ran the fastest. Could've been a coincidence but still???
Mike