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Author Topic:   METHANOL!
Pit Bull
Dirt Full Roller

Total posts: 65
posted October 15, 2002 08:52 PM
Ive been thinking....the class I race in is a restricted 2 barrel class, but they dont care what type of 2 barrel you run. This season I ran a hogged out rochester 2 barrel on A hot 455 with racing fuel..and repeatedly beat people with big cash small blocks. This is what ive been thinking...I saw a methanol holley 2 barrel for sale in the Speedway catalog, and it got me thinking. What if I ran methanol for next season? It doesn't say anywhere in the rules "Gas Only" so its legal. What modifications would be necessary? How much power would I gain? Is this a stupid idea? The motor I have now is a 10.5 to 1 compression Buick 455. Thanks for the help!

Dirt Maniac

Total posts: 144
posted October 15, 2002 10:03 PM
My books tell me the Buick weighs 50lbs more than the small block. Did you have to do anything special to get it through the turns?
What rpm range? What size track? Final gear ratio?

On the meth, Seems to me that I read once that you get more torque but I can't say from any personal knowledge.

Pit Bull
Dirt Full Roller

Total posts: 65
posted October 15, 2002 10:50 PM
The car that I run is a 74 malibu. To get it to turn, I used a swaybar off of a Pontiac bonneville, the front shocks are just heavy duty gas charged schocks for a police package Impala, and the rear shocks are stock - I run the stock appearing racing springs - 1200 RF, 1100 LF, 225 LR, 175 RR. I have a little bit of lead in the back, too. The front has all Urithane bushings, too. With the cam I have in it now, and the limited airflow of the 2 barrel, I only spin it about 4800 at the end of the straightaway. It has TONS of low-end torque - pulls all of the small blocks off of the corners. From the factory, they rated this engine at 510 lb-ft of torque. I run a 4.10 rear gear in 3rd gear. We generally run 3/8 to 1/2 mile tracks. Some buicks came with a factory aluminum intake, but I haven't found one for cheap yet. This would make the weight close to that of a small block since the intake weighs ssooooo much on these buicks. The car handles very, very well, especially on a dry slick track. Hope this helps....

Dirt Maniac

Total posts: 135
posted October 16, 2002 04:25 PM
If it is legal, I find it surprising that the whole class isn't doing it! You can expect a discernable boost in mid-range torque, and once you learn how to live with it, you will not be sorry. I would not broadcast the fact that you are running alky, and in fact I would try to hide it, but that is just me. If and when others find out, there will probably be a big stink, and everyone will wail that you are increasing the cost of racing, and alky should be outlawed. Keep in mind that there is a learning curve involved, and the WHOLE SYSTEM needs to be converted, not just the carb. Figure twice as much flow, so pump needs upgrading, lines got to get bigger. Every line, tank, fitting, gasket, and piece of rubber in the system needs to be compatible with the new fuel.

Dirt Forum Champ
Total posts: 620
posted October 16, 2002 04:50 PM
yeah, monster is correct. you'll be on your own as to tuning that beast. you'll probably be breaking new ground. nobody in the country that i've heard of has any experience with running a 455 cube engine on alky through a 2bbl. good luck and i hope you have a spare engine. alcohol and pistons don't get along very well if the mixture is lean. be prepared to change the oil a lot more often.

rico 08
Dirt Freak

Total posts: 372
posted October 17, 2002 05:09 PM
one disadvantage to it will be at the end of the race you will have burned off twice as much fuel as the otherguys and you may be too light in the rear because you burn roughly twice as much methanol vs gas,on a 3/8 mile track with that big of an engine even thru a two barrel you may burn half a gallon a lap!this is why especially on the bigger races the late model guys use gas and only use methanol in the qualifying races.

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