c-12 to sunnoco blue

junior barns · 09-20-2009, 09:40 AM

will a person need to go richer or lean out with this swap?

Michael Beard · 09-20-2009, 09:43 AM

We've gone back and forth between those fuels in the Mirada, and without changing jets, the car ran identical. Makes sense to me to pay less! I've been running the Sunoco Blue for a few years now. Never a problem.

tim worner · 09-20-2009, 06:08 PM

We have also backed to backed these fuels in my 327 carb. Olds and the boys 350 injected LT1 cars and found the only difference was the cost. Also Sunoco tests more consistent and has alot longer shelf life.

mannymen · 09-20-2009, 10:15 PM

What grade of Sunoco to use in place of VP C-11?

Ryan Horensky · 09-21-2009, 01:32 PM

This fuel stuff is crazy. I've had the opposite happen to me. I have had problems getting sunoco-purple to check. My father has also had the same issues with Sunoco-Purple. We run VP C11 in both cars and they check fine now. I don't know if this has to do with where I get the Sunoco? I didn't pass fuel check at the National Event in Reading. I could not purchase any Sunoco there so my only option was to switch the car over to VP. I'm happy with the VP, but it definetly is alot more pricey than the Sunoco.

Michael Beard · 09-21-2009, 05:19 PM

Quote:

Originally Posted by Ryan Horensky

I don't know if this has to do with where I get the Sunoco?

That's very likely the culprit. I've never had problems with fuel check.

We've also done the swap from C-11 to Sunoco Blue... same deal, car didn't care.

For best results, though, when making *any* change, you should do some A-B-A testing to find out what *your* particular car likes.

Ryan Horensky · 09-21-2009, 08:21 PM

Michael,

It prob does have to do with where I get it. We have run both fuels on the dyno and in the car. The dyno showed VP to make a slight horsepower increase, but back to back runs on the track showed very little difference at all. Not sure what I should do over the offseason? The main reason we have run VP is that we haven't had a problem in fuel check. I'm confused to say the least! lol!

Michael Beard · 09-22-2009, 06:30 AM

Get your Sunoco by the drum and then you won't have to wonder where it came from or what a place cleans its tanks with. I get mine from Bearden Oil.

Bob Bender · 09-26-2009, 12:59 AM

Quote:

Originally Posted by Ryan Horensky

This fuel stuff is crazy. I've had the opposite happen to me. I have had problems getting sunoco-purple to check. My father has also had the same issues with Sunoco-Purple. We run VP C11 in both cars and they check fine now. I don't know if this has to do with where I get the Sunoco? I didn't pass fuel check at the National Event in Reading. I could not purchase any Sunoco there so my only option was to switch the car over to VP. I'm happy with the VP, but it definetly is alot more pricey than the Sunoco.

Had the same problems with Sunoco........went to c-12 and had no issues and the car ran the same.

09-20-2009, 09:40 AM	#1
junior barns Senior Member Join Date: Jun 2006 Posts: 541 Likes: 11 Liked 20 Times in 14 Posts	c-12 to sunnoco blue will a person need to go richer or lean out with this swap?

09-20-2009, 09:43 AM	#2
Michael Beard VIP Member Join Date: Sep 2002 Location: Columbus, OH Posts: 4,060 Likes: 0 Liked 13 Times in 9 Posts	Re: c-12 to sunnoco blue We've gone back and forth between those fuels in the Mirada, and without changing jets, the car ran identical. Makes sense to me to pay less! I've been running the Sunoco Blue for a few years now. Never a problem. __________________ Michael Beard - NHRA/IHRA 3216 S/SS

09-20-2009, 06:08 PM	#3
tim worner Senior Member Join Date: Jan 2002 Location: duncannon Posts: 837 Likes: 14 Liked 126 Times in 20 Posts	Re: c-12 to sunnoco blue We have also backed to backed these fuels in my 327 carb. Olds and the boys 350 injected LT1 cars and found the only difference was the cost. Also Sunoco tests more consistent and has alot longer shelf life. __________________ Tim Worner SS 1747

09-20-2009, 10:15 PM	#4
mannymen Senior Member Join Date: Apr 2003 Posts: 728 Likes: 5 Liked 13 Times in 7 Posts	Re: c-12 to sunnoco blue What grade of Sunoco to use in place of VP C-11? __________________ N/A

09-21-2009, 01:32 PM	#5
Ryan Horensky Member Join Date: Sep 2002 Location: Sugarloaf,PA Posts: 201 Likes: 19 Liked 109 Times in 18 Posts	Re: c-12 to sunnoco blue This fuel stuff is crazy. I've had the opposite happen to me. I have had problems getting sunoco-purple to check. My father has also had the same issues with Sunoco-Purple. We run VP C11 in both cars and they check fine now. I don't know if this has to do with where I get the Sunoco? I didn't pass fuel check at the National Event in Reading. I could not purchase any Sunoco there so my only option was to switch the car over to VP. I'm happy with the VP, but it definetly is alot more pricey than the Sunoco.

09-21-2009, 08:21 PM	#7
Ryan Horensky Member Join Date: Sep 2002 Location: Sugarloaf,PA Posts: 201 Likes: 19 Liked 109 Times in 18 Posts	Re: c-12 to sunnoco blue Michael, It prob does have to do with where I get it. We have run both fuels on the dyno and in the car. The dyno showed VP to make a slight horsepower increase, but back to back runs on the track showed very little difference at all. Not sure what I should do over the offseason? The main reason we have run VP is that we haven't had a problem in fuel check. I'm confused to say the least! lol!

09-22-2009, 06:30 AM	#8
Michael Beard VIP Member Join Date: Sep 2002 Location: Columbus, OH Posts: 4,060 Likes: 0 Liked 13 Times in 9 Posts	Re: c-12 to sunnoco blue Get your Sunoco by the drum and then you won't have to wonder where it came from or what a place cleans its tanks with. I get mine from Bearden Oil. __________________ Michael Beard - NHRA/IHRA 3216 S/SS