approved race fuels experience

Uncrated · 03-29-2007, 11:30 AM

Racers,

up to this point, I have been running the Sunoco Standard Purple for one simple reason. The Sunoco wholesale distributor is four miles from my shop. [Lonestar Super Fuels, Kilgore TX]

However, we are now to the point of having the basic package worked out and are moving toward getting up-to-speed on all the fine tuning items.

So, fuel is on my question list.

A private reply can be sent to durafin@gmail.com

Thanks

Larry & Jeff Woodfin
Team Woodfin Racing
G/SA
1969 Nova

"I am glad old, is not as old as it used to be" Larry Woodfin

Adger Smith · 03-30-2007, 01:17 AM

Larry,
Does your fuel warehouse handle any other brands?
The Purple Standard is a pretty good fuel. You might get some more power out of a slightly lower octane. The following spec is what is shown for the purple:
Motor 105 R+m/2 110 Research 117 Octane Diff 12 Spec. G. .725 Reid V.P 8 Dia. -.05
To get a better low compression fuel you would need C-11 It has a lower octane & the Octane difference is only 2 which makes it a little more stable & a higher quality fuel. It's specs are:
Motor 104 R+M/2 106 Research 110 Octane diff. 2 Spe. G .717
Lead 4.23 Reid V.P N/A Dia. -1.1

Fuel is just something you need to test to see what your combo likes, Esp in your low compression engine. Some fuels might look good on paper, but might not like your combustion chamber, spark plug locartion, Piston shape, RPM,ect, ect. There is not a one fuel does all, that I know of... guess that is one reason VP markets over 54 different types/blends.

Adger Smith

Alan Roehrich · 03-30-2007, 07:56 AM

Adger is right, some engines seem to be quicker on C-11, especially those that don't need the octane of C-12 or similar fuels. The only drawback is we've found C-11 to be rather nasty and impure. Maybe that's just something that went on for a while around here. But the whole fuel system looks better and stays cleaner on C-12.

Alan Roehrich

Bring "AA" classes to NHRA Stock Eliminator!

Kegracing · 04-01-2007, 09:34 AM

Larry,

Most low compression motors will run quicker on C-11 than C-12 or Purple, etc. But, you will have to re-jet and find what it wants.

I ran different carbs and different fuels on back to back tests with my 305 motor and also the 350 motor I got from Chip. The 305 motor I had was a good one, and with same carb, just jetting changes, I saw .05 better with c-11 over c-12. This came at the expense of a much more expensive fuel, C-11 cost about half again as much, and it is a real pain to keep. I had to drain cell, or seal cell between races, and even when you take samples at track, cover, keep out of light, etc. Seems to flash off and change very quick. Most will tell you to get small quanities from someone you know has fresh fuel, etc. Just some of the fun of going fast.

I know everyone has opinions and stories, this is just what I saw.

I know you have done a lot of work to the old Nova since I have seen it. Glad to hear you are getting it where you want it.

Good luck!

Ken

Doing it the poor boy way - with a bowtie! Double 00's and dead on... now a PONTIAC is on the way!

slowstocker · 04-02-2007, 11:02 AM

I ran some fuel a few years ago that smelled REAL BAD that worked great. Anyone remember what it was called?
I do remember NHRA made it illegal.

Bill Belden · 04-02-2007, 11:18 AM

I believe that would be ERC that had the nasty smell

1100 I/S

junior barns · 04-03-2007, 12:21 AM

when going from c-12 to c-11 would you need to go richer or leaner?
lw compression engine!

03-29-2007, 11:30 AM	#1
Uncrated Banned Join Date: May 2006 Posts: 170 Likes: 0 Liked 0 Times in 0 Posts	approved race fuels experience Racers, up to this point, I have been running the Sunoco Standard Purple for one simple reason. The Sunoco wholesale distributor is four miles from my shop. [Lonestar Super Fuels, Kilgore TX] However, we are now to the point of having the basic package worked out and are moving toward getting up-to-speed on all the fine tuning items. So, fuel is on my question list. A private reply can be sent to durafin@gmail.com Thanks Larry & Jeff Woodfin Team Woodfin Racing G/SA 1969 Nova "I am glad old, is not as old as it used to be" Larry Woodfin

03-30-2007, 01:17 AM	#2
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,429 Likes: 532 Liked 824 Times in 301 Posts	Larry, Does your fuel warehouse handle any other brands? The Purple Standard is a pretty good fuel. You might get some more power out of a slightly lower octane. The following spec is what is shown for the purple: Motor 105 R+m/2 110 Research 117 Octane Diff 12 Spec. G. .725 Reid V.P 8 Dia. -.05 To get a better low compression fuel you would need C-11 It has a lower octane & the Octane difference is only 2 which makes it a little more stable & a higher quality fuel. It's specs are: Motor 104 R+M/2 106 Research 110 Octane diff. 2 Spe. G .717 Lead 4.23 Reid V.P N/A Dia. -1.1 Fuel is just something you need to test to see what your combo likes, Esp in your low compression engine. Some fuels might look good on paper, but might not like your combustion chamber, spark plug locartion, Piston shape, RPM,ect, ect. There is not a one fuel does all, that I know of... guess that is one reason VP markets over 54 different types/blends. Adger Smith __________________ Adger Smith (Former SS)

03-30-2007, 07:56 AM	#3
Alan Roehrich VIP Member Join Date: May 2006 Location: Murfreesboro TN Posts: 4,979 Likes: 1,194 Liked 1,291 Times in 323 Posts	Adger is right, some engines seem to be quicker on C-11, especially those that don't need the octane of C-12 or similar fuels. The only drawback is we've found C-11 to be rather nasty and impure. Maybe that's just something that went on for a while around here. But the whole fuel system looks better and stays cleaner on C-12. Alan Roehrich Bring "AA" classes to NHRA Stock Eliminator! __________________ Alan Roehrich 212A G/S

04-02-2007, 11:18 AM	#6
Bill Belden Member Join Date: Jun 2002 Location: York, PA Posts: 241 Likes: 0 Liked 1 Time in 1 Post	I believe that would be ERC that had the nasty smell 1100 I/S __________________ Bill Belden Retired Stock Eliminator [emailSTK1100@comcast.net[/email]

04-01-2007, 09:34 AM	#4
Kegracing Member Join Date: Jun 2002 Location: Red Oak, TX Posts: 441 Likes: 0 Liked 0 Times in 0 Posts	Larry, Most low compression motors will run quicker on C-11 than C-12 or Purple, etc. But, you will have to re-jet and find what it wants. I ran different carbs and different fuels on back to back tests with my 305 motor and also the 350 motor I got from Chip. The 305 motor I had was a good one, and with same carb, just jetting changes, I saw .05 better with c-11 over c-12. This came at the expense of a much more expensive fuel, C-11 cost about half again as much, and it is a real pain to keep. I had to drain cell, or seal cell between races, and even when you take samples at track, cover, keep out of light, etc. Seems to flash off and change very quick. Most will tell you to get small quanities from someone you know has fresh fuel, etc. Just some of the fun of going fast. I know everyone has opinions and stories, this is just what I saw. I know you have done a lot of work to the old Nova since I have seen it. Glad to hear you are getting it where you want it. Good luck! Ken Doing it the poor boy way - with a bowtie! Double 00's and dead on... now a PONTIAC is on the way!

04-02-2007, 11:02 AM	#5
slowstocker Junior Member Join Date: Feb 2007 Posts: 34 Likes: 0 Liked 0 Times in 0 Posts	I ran some fuel a few years ago that smelled REAL BAD that worked great. Anyone remember what it was called? I do remember NHRA made it illegal.

04-03-2007, 12:21 AM	#7
junior barns Senior Member Join Date: Jun 2006 Posts: 541 Likes: 11 Liked 21 Times in 15 Posts	when going from c-12 to c-11 would you need to go richer or leaner? lw compression engine!