Ethanol only?

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WKA Pro Series Alcohol Briggs Animal Engine

We offer National Winning Blueprinted Engines for Karting, Quarter Midget, Junior Sprints, Microds, Back Yard Racing, Ect! We also Offer a Full Selection of Stock and Aftermarket High Performance Parts for Briggs and Stratton, Clone, and Predator Applications. We are just a phone call away to...
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Uncle Franks Alcohol Flathead Race Motor

Uncle Franks Alcohol Flathead Race Motor
www.ufranks.com
 
Yardman999 said:
So ... new piston{s} (and rings; or milled head{s}) would be needed. So far, seems do-able. Conversion kits already available?
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And a forged or steel rod
Both will require rebalancing of the engine
Not too expensive for a buggering around project
Get a racing head if one is available as they have a squish band designed to burn dope .
 
Hammermechanicman said:
Some go cart classes run straight alcohol. They can get more power than gas because alcohol has a high octane rating around 113 plus it runs cooler than gas but you need something like a 14:1 compression ratio to take advantage of the octane rating. So running high alcohol content fuel in an engine designed for gas or a "flex" fuel engine is a waste. No matter how you "tune" the engine and advance the timing and dump fuel in all it will do is get lower MPG. No matter what the internet says. If an engine has a variable boost turbo it's a different story.
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Yea definitely boosted..
 
Just to put it in perspective when we raced the 500CC BSA we were using AMAL main jets from 495 down to 420
A standard petrol engine ran 190 to 240 so better than twice as much fuel And from memory ( 50 years ago ) we ran 15:1 to 17:1 .
My diesel runs 22:1
And like everything else for speed . high lift cams that had the profile of a house brick , twin plugs and we had to run a cold plug for 10 minutes to warm the engine before we switched to the racr plugs.
Fun times but we did spend a **** load of money for no net rewards other than broken bones and serious gravel rash .
 
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