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Old 02-19-2008, 09:18 AM   #1
promachine
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Default Mixing methanol & nitromethane

Has anybody had any success mixing methanol and nitromethane at small percentages??(i.e. 90%methanol 10%nitro)What kind of power increases did you find?? any problems with heat.?

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Old 02-19-2008, 10:52 AM   #2
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It can be "very" successful. Of couse there will be "problems with heat". Horsepower is a function of heat, the bigger the bang in the combustion chamber, the more heat is generated. When you play with nitromethane, remember, it's a slow burning fuel and you will need to dial-in more lead on the ignition. It is a different animal than running straight alky.
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Old 02-19-2008, 06:25 PM   #3
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If you are going to do it, measure the mix by specific gravity with a hydrometer. Not by volume. And I would use 30%
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Old 02-19-2008, 06:56 PM   #4
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Any idea on the correlation of % nitro to % increase in HP?? i.e would 30% nitro get me a 10% increase in power?? Also, is 30% safe, if I use less than 30% will I not see any real increase in power??
Thanks for the input,

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Old 02-19-2008, 07:00 PM   #5
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Never dyno'd it and never used less than 30%.
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Old 02-19-2008, 07:43 PM   #6
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Quote:
Originally Posted by Kevin Zaske View Post
If you are going to do it, measure the mix by specific gravity with a hydrometer. Not by volume. And I would use 30%

Excellent tip. Ask me how I know.

Also as said, I don't think I would waste time, money & energy learning on less than 30%. Probably not worth the gain you would get.
50% is used by a few FED guys I've talked to. Not an expert, but I believe there is or was a big following of a 50% class.
Good luck, we want videos of you testing!!!!

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Old 02-20-2008, 10:25 AM   #7
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If you are going to use 30 plus percent of nitro, you better have a really good ignition and bottom end. The deal with nitro is detonation. If it starts to detonate, it is not controllable. It will actually produce a high order detonation. You want to start small. 5 % will give you enough hp to generally get 7 hundredths to a tenth in the 1/4 mile. You want to richen up approximately 15% for every 5% nitro. If you are wanting to try a fuel that will produce similar results, try the M5 methanol. You should get a tenth or so over regular methanol.


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Old 02-20-2008, 10:39 AM   #8
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Nitro is a strange fuel. Spill a puddle on the ground and throw a lighted match in it. Nothing happens. Spill some on your garage floor and hit it with a hammer. The hammer will disapear, along with your arm and most of your garage.
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Old 02-20-2008, 11:41 AM   #9
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.

We were stupid & knew a rich guy with a P/M. We talked him into using nitro. After we split the block on the 1st pass, we knew how not to try it.

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Old 05-15-2008, 05:17 AM   #10
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You should be able run 30% without changing any jetting at all... If you run less than 30% you would actually have to lean the motor out a bit because the weight of the Nitro is soo much more and you actually end up with more mass going in than what the engine will handle.

I ran a 383 small block chevy with a hillborn injection.. I have tried running a little bit of nitro on occation and it will definately make you go quicker.
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Old 05-15-2008, 08:50 AM   #11
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Many years ago I was getting advice from the late/great Elmer Trent on how to setup a drag bike to run on methanol..

After having the bike drinking meth like it was water.. I never saw the gains I expected.. At that point Elmer told me to add 10% nitro to the mix.. He garranteed I'd get the power increase I was looking for..

Unfortunately, when I went to a local Top Fuel drag boater in the area that sold nitro.. He only sold it in 55 gal drums.. And even back in those days.. The cost of a drum of nitro just about blew me away...
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Old 05-15-2008, 09:11 AM   #12
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Wow flash back, I ran DragBike for years and saw the late Elmer Trett many times.
As far as mixing nitro w/methanol, the best guy I know to talk to is Spud @ http://www.fuelinjectionenterprises.com/
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Old 05-16-2008, 08:52 AM   #13
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Quote:
Originally Posted by Uncle Paul View Post
Wow flash back, I ran DragBike for years and saw the late Elmer Trett many times.
As far as mixing nitro w/methanol, the best guy I know to talk to is Spud @ http://www.fuelinjectionenterprises.com/
Knowing Elmer is kind of showing our ages ..

That Spud site is the one to have if you're playing with nitro.. Very informative.. And interesting reading..
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Old 05-16-2008, 12:16 PM   #14
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Bellman you are correct. We are old enough to know better and young enough to remember.
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