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Fuel for racing!

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Old July 6th, 2018, 02:42 PM
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Fuel for racing!

Let's hear about race fuel on n/a race engine. C12,alcohol,E85 around 600 hp ! What would you use and why.
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Old July 10th, 2018, 10:33 AM
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Alcohol--Helps with low end torque and runs cooler. But I like injection also, carbs are too messy with taking the bowls off to make changes.
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Old July 12th, 2018, 03:40 PM
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Well machine shop guy was trying to get me to switch to E 85. I use 50/50 gas/110. He said I would use twice as much alcohol than race gas! The E 85 was the way to go! I am on the fence because I have not used anything other than50/50.
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Old July 13th, 2018, 10:26 AM
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Originally Posted by wr1970 View Post
Well machine shop guy was trying to get me to switch to E 85. I use 50/50 gas/110. He said I would use twice as much alcohol than race gas! The E 85 was the way to go! I am on the fence because I have not used anything other than50/50.


Yes you will use more Alky than race gas, Alky use to be 1/2 the cost for M1 than race gas, doesn't look like that anymore
110 is around 8.5-9.0/gal
M1 Methanol in 54 gal drum is 6.3 VP product, there is a M3 & M5 which make more power but also cost more
E 85 is Ethanol and will burn more than 110 and give off less burn, so down on power.
Might be OK for street car, not so good for strip. I guess if you can get a really hot ignition set-up you could add more and burn more E85 and get power out of it.
An IHRA alcohol FC guy use to make it work many yrs ago.
Since you use a 50/50 mixture, I think I might just stay with that.
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Old August 2nd, 2018, 11:55 AM
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This may help? Try to find 100% pure gasoline with no alcohol to blend with your racing fuel. Here in Michigan BP premium 93 octain is 100% pure. At the BP pump handle it's labeled "Amoco". My 10.5 to 1 Olds 455 runs great on it straight and I get a notable improvement in gas mileage. Tom
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Old August 2nd, 2018, 08:48 PM
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No such thing here at 93%. Only 87% pure gas.😢
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Old August 31st, 2018, 12:55 PM
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Octain VS compression ratio
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Old September 13th, 2018, 02:36 PM
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Originally Posted by wr1970 View Post
No such thing here at 93%. Only 87% pure gas.��

Its 93 octane and 100 percent as in 0 percent alcohol.
In BC we have 94 and 93 Octane fuel with out alcohol.
There are a few cars running 11 .5 + on 94 octane.
I have also seen guys running water methanol injection with the 94 Octane at the track.

Last edited by Bernhard; September 13th, 2018 at 02:42 PM.
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Old September 18th, 2018, 04:34 AM
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E85 is far better than people give it credit for. My 93 Camaro 406 sbc with powerglide trans ran [email protected] on 110 VP.....No other changes Switched to E85 Carb and Pump E85 Went [email protected] best passes on both. There was a torgue difference I could feel on launch and gear changes. My car loved it.
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