I want to hear from Wallace Cleaver or Quick Dawg, how did your friend's experiment turn out 6 years ago?

Disclaimer,

Warning use of such fuel can be addictive and cost you butt load of cash.

quote:

Originally posted by Curly1:

Were you able to use Two Step? Mine detonated bad at 10% while on the Two Step. Appears I could run much more on dyno or on the track with out Two Step.

Footbrake car only, no 2 step. And I pulled the high side chip out.

adding Toluene(think speeled corrctly) to nitro help control detonation. I Bought some at paint store. Google it probably find info I know it was trick back in 60's, No smart butts I was not there to witness it either.LOL

Doing soe research on other things and came across statement never thought o mention here.

RPM. Figure most here are on lower end say 7500 to 8000. But for nitro without extra air from blowert that is high her end. A/fuel cars run 2.90 gear and almost never see much over 6k and the is with two 44 amp mags doing the firing.

Just a thought that since lots are having detonation issue. Running smaller chamber heads with less fire power and higher rpm. It might be unburned fuel more than detonation from anything else. Just food for thought.

quote:

Originally posted by wideopen231:
adding Toluene(think speeled corrctly) to nitro help control detonation. I Bought some at paint store. Google it probably find info I know it was trick back in 60's, No smart butts I was not there to witness it either.LOL

When I ran the 10% and it was detonating bad on the Two Step I did have toluene in there. Bought 2.5 gallon can of Nitro and mixed it in 5 gallon jug with 1 gallon of Toluene and topped it off with alcohol. Specific gravity of Toluene is close to alcohol just a little heavier. Then I mixed up a jug of about 30% and that is what I used to mix with at track. Usually used about 3% or less and only needed that when I was racing at higher altitude tracks or really bad air. As little as 1/2% will make a difference when trying to hit a perfect number.

Do not know how much the Toluene helps but I believe the Two Step is the problem. Have very limited experience there, it burned plugs up and was hurting motor on the Two Step. Was not going to continue testing and beating up my motor to find out why. Never had any detonation at 3% or less on Two Step. I have ran 20% on dyno with one motor and no problem.

RPM change? Did not see any difference there on my stuff at low percentages. On that motor 1% was good for .02 ET in 1/8 mile and that comes out to about 10 Hp for each 1%.

With all that said I dynoed a motor recently and tried up to 18% Nitro with no improvement. That was out of a new sealed 5 gallon can of Nitro I think it was bad. It weighed out and measured properly but did not stink and burn your eyes like the other and it did not give any performance gain. I made 2 dyno pulls to verify motor was good and making same as it was last time on dyno on alcohol. Good oil pressure, vacuum and motor made same as last time. Then went to 5% no change. Maybe 2 or 3 Hp which is in margin of error for water temp, oil temp etc. Should have been 50 Hp more. Then I mixed up 8% and tried it no change. Also moved timing and fuel around some with little change. So I decided throw a lot at it to see what it did. Poured a bunch in there measured it up and it was right at 18% that should have been 170 Hp or more. Started making about maybe 5 more Hp but we clicked it off 500 RPM lower because it started detonating. Which is why I spent the time and money to dyno to see exactly how much HP each percent of Nitro made and where it started detonating.

On my other motor at 2% it will burn your eyes and have a little pop to it, this did not. Also motor will heat up much faster with Nitro and this did not. So I am back to square one with new motor and Nitro. Have not gave up on it but this batch of Nitro certainly is not the same as my past experience with it so throwing it away. I run an index and this combination is a little short so I am going to have to figure it out with this motor. New batch of Nitro and testing again.

Do not have all the answers but hope this information helps some of you. I do think a Two Step and Nitro do not play well together unless you are at very low mixtures say 5% or less.

I have said before on other subjects. I do not like two step and not gutsey enough to put it with nitro. I am sure some do with no issue and more power to them. Heck I put a dealay off on SLE so it will barley hit two step if at all. That is on alky with no nitro.

dropping holes olut and then lighting them off with nitro just seems like bad idea. Think about how hard nitro is to lite in forst place. The ytou add some raw big droppets to a A/F mixutre that is tuned to be perfect,you have dead rich mixture and with less than optimal igintion system.