Just wondering what fuel or octane mix of fuel your running with 12.1 and stage 2 cam?

 

110 octane leaded race gas

 

OK so something like VP's c12 . and not just 100 octane AV fuel I can get right around the corner for 3 dollars a gallon. I will have to make a 1 1/2 hour drive if so to VP and at over 6 dollars a gallon, has got me thinking..... what do you guys think do I go for 12.1 or just stick with 10.75 .1 ???
FYI- with stage2 hotcams.

 

6$ a gallon??? ouch! I can ge 114 or somethign like that here for 4.50 a gallon. And even with a 10.75:1 I ran half race half super.

 

I just bought VP Red (105 Motor Octane) for $28 per 5 gallons for my new 12:1 Craycraft. If I like it, I can get a 30 gallon drun for $130. According to VP's guidelines, Red is their generic race gas and good up to 13:1.

Also, not all octane numbers are the same. Make sure you are comparing Research Octane (RON) to Motor Octane (MON) to R+M/2.

 

Too much hassle for that 1 maybe 2 horses the 12/1 piston will yield.

 

it's not the power he should be worried about, but the detonation. Can you get adjustable timing on these motors anyway? Just curious. I work on a couple fast streetcars and have a wolverine - so I wonder about the tuning possibilites of my 350 motor in the wolvy...

 

I'm running avgas in mine with no problem. Don't know the compression ratio, but I have about 190 cranking psi. I noticed no difference from c12 to the avgas.

 

I'm just butting my head in here since I don't run race gas but. . .

I have read that avgas doesn't have the needed corrosion inhibitors, cleaning agents, etc. that are needed and is bad to run.

Just what I've read. Again, I have no first hand experience at all but wanted to bring this point out as a topic to consider.

 

I've heard the same. It is a dry fuel no doubt, maybe it wouldn't be a good idea for a four stoke. I'd definately use top end lube, I'd also think about going to alcohol before paying 6 a gallon. Just my 2 cents. It burns very clean as well. I also have an egt to monitor if the engine is getting to hot.