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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!

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!