[Speedy G]

Very cool thread, I'm just not very impressed regarding the quantity of fuel needed to make some interesting power. Do I have this right?

100ml/min of PURE NitroMethane will only produce 3-4Hp?


That's the regular size injector for the snowperformance kit. My fuel injectors are 440ml/min so you want me to inject 25% nitromethane with respect to fuel for an extra 3-4Hp? Did you mean 100ml/min of injected mixture produces 3-4Hp?

I'll try to hack the computation from the energy content data given earlier:

50/40/10 W/M/N mixture, assume 100lbs of mixture

0 BTU/lbs * 50 = 0
5000 BTU/lbs * 10 = 50,000
12500 BTU/lbs * 40 = 500,000

Total 550,000 BTU/100lbs = 5,500BTU/lbs

400ml/min*4 = 1600ml/min of fuel and 360bhp

so

1600ml/min*19,000BTU/lbs =30,400,000 (don't care about units ok?)


30,400,000/ 360 = 84,444

Now for the mixture

100ml/min * 5500BTU/lbs = 550,000

550,000/Hp = 84,444 <- Hp is 6.5 Hp

That means I'm getting 6.5Hp for a 100ml/min injector, injecting the mixture, and it looks like the methanol is responsible for > 80% of the power made.

So, again, why add nitromethane? I guess the guy from 2 posts ago said why. The thing is you'll have to inject a lot of it. Let me see what a 50/50 methanol/nitromethane mix does:

50 * 5000 = 250,000
50 * 12500 = 625,000

875,000/ 84,444 = 10Hp with a less than 2.5:1 A/F ratio

That's a cool round number, for every 100ml of 50/50 M/NM you get 10Hp.


It would be cool to find something that would neutralize the nitric acid exhaust. Although I like power, I don't like acid eating up my custom exhaust.

Speedy G