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methanol dilemma...expert input needed

Old 01-21-2008, 03:38 PM
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Default methanol dilemma...expert input needed

I had a custom alum meth reserve tank fabbed up to fit in a specific place on my current project and it didn't even cross my mind at the time that methanol is corrosive to alum. I have NO choice but to use the custom shaped tank so what are my options? Would a meth/water 50/50 mix make it less corrosive? What about spraying something else? I need the added benefit of octane boost so can't be just straight H2O. Would it be possible to inject C16 through the meth system instead?
Old 01-21-2008, 03:47 PM
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I wonder if you could get the inside of the tank coated to keep it from corroding.
Old 01-21-2008, 03:52 PM
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.

Have several guys running 100% meth. P/M guys, 7-9 gallons. They just drain it before putting in trailer.
One guy had it coated when the car was built, for gas. When he switched, it ate it up & made a mess.
Use it, you will be fine. Just do the maintenence. Good luck.

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Old 01-21-2008, 04:02 PM
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The only problem with that is for this application the tank will need to be full nearly all the time.
Old 01-21-2008, 05:17 PM
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Well according to this the 100% water injection is just as benifitial read it and toward the bottom it explains that water acts as a detonation suppresor and slows the burn of regular fuel to act like higher octane fuels etc... Not saying you don't need any methanol just another option possibly, but definately reducing the amount like a 50/50 mix should slow some of the corrosion process I would think. Who know maybe it would speed it up do to the oxygen in the water??? GL it a good read anyways so you won't be waisting your time.
http://www.alcoholinjectionsystems.c...icle_info.html
Old 01-21-2008, 05:30 PM
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Originally Posted by ABeasst
I wonder if you could get the inside of the tank coated to keep it from corroding.
I was thinking this too...
Old 01-21-2008, 05:38 PM
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Sorry, I was only giving the info I actually knew. Maybe he used the wrong coating. The car was built ~5 years ago.
Maybe they have alcohol proof coating out now. Good luck, I tried.

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Old 01-21-2008, 06:27 PM
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Originally Posted by Inspector12
Well according to this the 100% water injection is just as benifitial read it and toward the bottom it explains that water acts as a detonation suppresor and slows the burn of regular fuel to act like higher octane fuels etc... Not saying you don't need any methanol just another option possibly, but definately reducing the amount like a 50/50 mix should slow some of the corrosion process I would think. Who know maybe it would speed it up do to the oxygen in the water??? GL it a good read anyways so you won't be waisting your time.
http://www.alcoholinjectionsystems.c...icle_info.html
Good read. Thanks for the link. I'm thinking 80% water and 20%rubbing alcohol (isoprop...)
Old 01-21-2008, 07:38 PM
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Very interesting article.
Old 01-21-2008, 08:34 PM
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You should have it anodized.
Old 01-22-2008, 04:51 AM
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Originally Posted by Jimmy P
You should have it anodized.
Ding Ding Ding, we have a winner.
Old 01-22-2008, 01:11 PM
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Originally Posted by gametech
Ding Ding Ding, we have a winner.
What long term effects would the meth have on anodizing?
Old 01-22-2008, 01:40 PM
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While water will do a good job at cooling, it won't give the same results as water/meth mix would as the meth will also raise the octane level keeping you further away from detonation and able to run more timing and boost safely.

If you have an aluminum tank and want to make it so it won't corrode, I would go with the suggestion of having the insides coated somehow. I would just go with some form of plastic if able. If you want to extend the life of it without coating, use a 50/50 water/meth mix. This is the best mix to use anyways IMO. It is what I am using and have had great success with. If you talk to some people like Julio at Alky Control, they will tell you to use straight meth only. Then if you talk to Greg at Snow Performance, he will tell you to run a 50/50 mix. Arguments have been made supporting both, and both will work, but the 50/50 mix works best IMO for most applications and will be much less corrosive than running straight meth.
Old 01-22-2008, 01:59 PM
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Yes 50/50 water/meth mix and straight meth both work, but you will get more cooling effect and a greater increase in octane from straight meth. Straight meth is more corrosive than a 50/50 mix, so unless you have a plastic tank and stainless steel hoses run a 50/50 mix.

Ultimating the most gain/benefit is with 100% Methanol.
Old 01-22-2008, 02:05 PM
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Originally Posted by speedracer5532
Yes 50/50 water/meth mix and straight meth both work, but you will get more cooling effect and a greater increase in octane from straight meth. Straight meth is more corrosive than a 50/50 mix, so unless you have a plastic tank and stainless steel hoses run a 50/50 mix.

Ultimating the most gain/benefit is with 100% Methanol.
Its all debateable which is actually "best" and has been argued many times. Both will work, but to date no one has proven it most benefitial either way.
Old 01-22-2008, 04:24 PM
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Originally Posted by CALL911
Its all debateable which is actually "best" and has been argued many times. Both will work, but to date no one has proven it most benefitial either way.
What are you missing here? Running straight meth will have a greater cooling effect AND raise the octane. Sounds like there is a clear "best" to me.
Old 01-22-2008, 04:31 PM
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ANYTHING aluminum needs to be anodized. We ran into the on the "Black Bitch" this year. I didnt get the fuel rails re anodized after welding onto them. We had a nice time trying to clean 22 injectors. Also the polished Aeromotive fuel filters arent anodized from the factory.
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Old 01-22-2008, 04:51 PM
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Originally Posted by ninetres
What are you missing here? Running straight meth will have a greater cooling effect AND raise the octane. Sounds like there is a clear "best" to me.
I'm not going to argue with you as its already been done over this topic many times. All I can say is that its never been proven one way or another. If you have a link that directly proves that straight meth has a greater cooling affect over water, I'd like to hear it, as that I believe it has been proved other wise. The bigger argument is which is overall better as the water mix will cool it better but the straight meth will raise octane more.

Here's just one of many threads discussing this I could point out; http://www.camaroz28.com/forums/showthread.php?t=491444
Old 01-22-2008, 04:55 PM
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Straight meth is good but if your like me, on the Power Tour this year you can't go in the gas station and buy straight meth. So I am going to try and run Washer fluid because it's readily available.
Old 01-22-2008, 05:03 PM
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Originally Posted by 02SSLE
Straight meth is good but if your like me, on the Power Tour this year you can't go in the gas station and buy straight meth. So I am going to try and run Washer fluid because it's readily available.
People have done that as well and had little issues, although I reccomend just going and getting yourself some distilled water and mixing it with meth.

It depends on your setup, but I beat the living sh*t out of my Z this last year, and I only went through about 7 gallons of the mix. My 1.2 gallon tank in my car will last me for weeks of a abuse and fun. I think if you want to play it on the safe side, just fill the tank in your car and then get a 5 gallon gas tank and put it in your hatch to take with you.

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