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Farmall & IHC Tractors Discussion Forum
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isopropyl alcohol in Aircleaner

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linemanfarmer

04-28-2008 19:20:22




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I had a guy post a message in my post last night saying to gain a little more HP is to put isopropyl alcohol in the aircleaner. Will that even keep out a little dirt, not that its in much but just for my knowlege? And running aviation fuel, I have heard that can boost a decent amount of HP if the carburator was jetted right or a larger on off a F30 or 22-36.?

Thanks Derek




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IH2444

04-29-2008 08:16:42




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 Re: isopropyl alcohol in Aircleaner in reply to linemanfarmer, 04-28-2008 19:20:22  
What happens with an aircleaner with alc in it after a backfire ?



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garytomaszewski

04-29-2008 06:48:42




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 Re: isopropyl alcohol in Aircleaner in reply to linemanfarmer, 04-28-2008 19:20:22  
I was the original answer poster. Every answer here is correct. Alcohol filters as well as water, not for long term use just the pull, it cools the air (dense air enables richen fuel). All the suggestions were to use combined, advance timing=higher octane fuel to prevent spark knock. Model air plane fuel used to be alot like nitro-methane very explosive, then mix with av-gas



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Janicholson

04-29-2008 06:09:23




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 Re: isopropyl alcohol in Aircleaner in reply to linemanfarmer, 04-28-2008 19:20:22  
Alcohol in the Cleaner just richens the mix with a mediocre fuel (~65% of what gasoline has per unit volume) and unless less fuel is allowed through the carb, it will be rich, and less power will be produced. NAH don't do it. It can also promote explosive decomposition of the aircleaner.
The use of the lowest octane fuel that will prevent spatk knock (cheap pump regular) in a tractor with stock compression is the most powerful. If the compression is above 175 psi, then single steps above regular should be tried to lower knock. The high octane fuels burn slower, and have higher ignition temperatures, not more intrinsic energy. JimN

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charles todd

04-28-2008 19:33:55




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 Re: isopropyl alcohol in Aircleaner in reply to linemanfarmer, 04-28-2008 19:20:22  
Isopropyl alcohol boils at about 77 degrees (cooling effect on skin). The only "gain" I can see is the "fumes" may help the existing fuel to burn OR it may help cool the intake charge. Personaly, I feel the gain would be minute. And to answer the original question, it would filter dirt about as well as tap water.



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the Unforgiven

04-28-2008 19:25:50




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 Re: isopropyl alcohol in Aircleaner in reply to linemanfarmer, 04-28-2008 19:20:22  
I would think the alcohol in the air cleaner would be a complete waste of time. And you will gain zero advantage in high test fuel unless you raise the compression ratio enough that you can't run pump gas.



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garytomaszewski

04-29-2008 08:59:16




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 Re: isopropyl alcohol in Aircleaner in reply to the Unforgiven, 04-28-2008 19:25:50  
I gave a bunch of Suggestions to be used IN COMBINATION,for the man to make a little more HP. Higher octane fuel is more even burning, thus the adding nitromethane(model airplane fuel). The alcohol evaporation in the air cleaner adds oxygen to the air flow and cools the incoming air (again denser= more oxygen), this allows you to increase fuel, did it many times on a DYNO when we pulled an F20. Not great increase from any ONE step but combining all the best we dynoed was 52 about on par with a super M, this was with 4" pistons giving 260 cubic inches, again about the size of a super M. We would EAT the 39 M's??? that were trying to pull in the 4500# class

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