Competition Nitromethane....

[BWagnaar]

So, has anyone thought of using niro? It has a higher oxygen content than methanol ( weight %) 52. 5 to 49. 9. And its specific energy (BTU/pound of air) is 2. 937 compared to 1. 340 for methanol.



Watching the top fuel drags it made me think why hasn't someone tried it? Is it too violent or volatile? It makes a crap load of power in a blown/injected v8.

 

[fest3er]

Will it detonate under 20K or 30K PSI compression in liquid form? If not, then retard your timing sufficiently and give it a go. Like most oxygenated fuels and fuel additives (eth, meth, nitrous, et al), the added oxygen increases the probability that an oxygen ion is next to some fuel that wants to burn. That increased probability added to nitro's (probable) increased ignitibility translates into advanced ignition timing. How much, I dunno.

Pull your timing back to 7 degrees and try 1% nitro in #2 oil. With a mechanical pump, slowly increase the percentage until peak cylinder pressure is nearly too high; with a common-rail, slowly advance timing until peak pressure is nearly too high. You should then have a fair idea of where the timing should be set for that ratio of nitro-to-fuel.

Normal top fuel is 15% nitro, 85% alcohol. Also recall that top fuel engines are dieseling at the end of the quarter. And remember that nitro is supposed to be corrosive, so be prepared to rebuild the engine quite often and change the oil after each run. Oh, and make sure your fuel system seals and o-rings are compatible with nitro.

 

[fox]

THAT surely simplified it!!!!

I am not being a smart@@s.

 

[BWagnaar]

I wasn't planning on running it mixed with #2, but more so thinking of the water/meth systems. I also heard that nitro it less corrosive than methanol. What happens when guys try to run a high % of methanol in there water/meth injection system?

 

[TCluff]

I wasn't planning on running it mixed with #2, but more so thinking of the water/meth systems. I also heard that nitro it less corrosive than methanol. What happens when guys try to run a high % of methanol in there water/meth injection system?

I sled pulled a few weeks back with a 90/10 meth water mix, it comes on real hard and egts climb fast, definitely made more h. p. than 50/50, havent put it on a dyno to see what the difference was i too thought about running 20% nitro but i am scared with the new engine, i think the nitro will pre detonate with a diesel and crazy cyl pressures

 

[Mhannink]

i think its too volital. i was talking to a top fueler one time at our school and he said they have to be extremly careful with the stuff. what they do is start on acl and get it running once the engine has warmed up the very VERY slowly start to switch it over to nitro and if anything sounds funny they back it off and wait a while before trying again. if they dont do it this way he said they grenade the engine and kill everyone standing near by.

 

[Highfinance97]

https://www.turbodieselregister.com...bers-only/174185-nitro-methane-injection.htmlOo.