Re: Methanol injection
[Re: oldschoolracer]
#2427079
01/01/18 02:31 PM
01/01/18 02:31 PM
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Joined: May 2004
Posts: 12,418 Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,418
Taxes & Virus's R-US, NY
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I haven't used it, but a lot of guys around me do. There is about a .1 gain, and you can run more timing. All the guys running it are using vacuum pumps with it as well. It also requires a different cam I am told for the injection, but that may be for stacks.
Tuning window is bigger......BUT, for the money, and the hassle, I would never do it....I watch those guys struggle some days. Fuel goes bad, can't get it started, floods out, have to dump bad fuel and find fresh fuel...No thanks. Seems like a real PITA most weekends.
Now if I were to go E85 or Meth, it would be with a carb and a small vacuum pump. A lot less changes needed.
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Re: Methanol injection
[Re: oldschoolracer]
#2427393
01/01/18 09:02 PM
01/01/18 09:02 PM
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Joined: Jan 2003
Posts: 10,020 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,020
Frostbitefalls MN (Rocky&Bullw...
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I would run a primer plus system with a hat on a tunnelram . Max power, quick warmup on gas and the ability to clear out the alky at the end of each pass so it saves on fuel costs and preserves the cylinder bores during storage and races. I have a single terminater now, and not having the primer plus eats up a lot of alky plus like i said earlier causes problems with bore corosion if you don't do a perfect job of clearing the motor of alky. A well setup car is absolutely deadly consistant, right up till about 96 percent humidity. Then there is a serious dip in power because of the high humidity. I think it amounts to about .04 in the 1/4 on my car, been many years since i had to deal with that. On timing, methanol runs best with about 2 degrees less timing than gas. Throttle response with alky injection is killer. Idle is very fat on an injection system, and fuel is waiting at the intake valve! The first pass i ever ran with an injecter it went right on the bumper launching off idle. What a surprise that was.
Last edited by gregsdart; 01/01/18 09:13 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Methanol injection
[Re: oldschoolracer]
#2427706
01/02/18 01:43 PM
01/02/18 01:43 PM
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Joined: Oct 2007
Posts: 4,213 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,213
New York
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Only the biggest stacks are big enough. The CFM capacity isn't the total of 8 for 8 cylinders, but of 1 for each cylinder, the demand is much greater.
Boffin Emeritus
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