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Discussion Starter · #1 · (Edited)
Hi

Anybody tried ? According to Wikipedia Nitromethane gives 2.3 more power than gasoline ( this same engine)

Top fuel dragsters have about 1000HP from 1 litre engine capacity with nitromethane.

Any ideas and advices how to use NItromethane in b204 ? stage 3 currently.

As an engine fuel

In a minor application, nitromethane is used as a fuel in racing, particularly drag racing, as well as for rockets and model airplanes and commonly referred to in this context as "nitro". The oxygen content of nitromethane enables it to burn with much less atmospheric oxygen.

4CH3NO2 + 3O2 → 4CO2 + 6H2O + 2N2

14.7 lbs. of air is required to burn 1 pound of gasoline, but only 1.7 lb. of air for 1 lb. of nitromethane. Since an engine's cylinder can only contain a limited amount of air on each stroke, 8.7 times more nitromethane than gasoline can be burned in one stroke. Nitromethane, however, has a lower energy density: Gasoline provides about 42-44 MJ/kg whereas nitromethane provides only 11.3 MJ/kg. This analysis indicates that nitromethane generates about 2.3 times the power of gasoline when combined with a given amount of oxygen.

Nitromethane can also be used as a monopropellant, i.e., a fuel that burns without added oxygen. The following equation describes this process:

4 CH3NO2 → 4 CO + 4 H2O + 2 H2 + 2 N2

Nitromethane has a laminar combustion velocity of approx. 0.5 m/s, somewhat higher than gasoline, thus making it suitable for high speed engines. It also has a somewhat higher flame temperature of about 2400 °C. The high heat of vaporization of 0.56 MJ/kg together with the high fuel flow provides significant cooling of the incoming charge (about twice that of methanol), resulting in reasonably low temperatures.

Nitromethane is usually used with rich air/fuel mixtures because it provides power even in the absence of atmospheric oxygen. When rich air/fuel mixtures are used, hydrogen and carbon monoxide are two of the combustion products. These gases often ignite, sometimes spectacularly, as the normally very rich mixtures of the still burning fuel exits the exhaust ports. Very rich mixtures are necessary to reduce the temperature of combustion chamber hot parts in order to control pre-ignition and subsequent detonation. Operational details depend on the particular mixture and engine characteristics.

A small amount of hydrazine blended in nitromethane can increase the power output even further. With nitromethane, hydrazine forms an explosive salt that is again a monopropellant. This unstable mixture poses a severe safety hazard.

In model aircraft and car glow fuel, the primary ingredient is generally methanol with some nitromethane (0% to 65%, but rarely over 30% since nitromethane is expensive compared to methanol) and 10-20% lubricants (usually castor oil and/or synthetic oil). Even moderate amounts of nitromethane tend to increase the power created by the engine (as the limiting factor is often the air intake), making the engine easier to tune (adjust for the proper air/fuel ratio).
Cheers
Danny
 

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100% not feasible in a street car. first off, a 53 gallon drum of nitromethane can cost $3000. and it would take about 4x as much nitro as gasoline just to make the same amount of power as you would be with gasoline; so you'd be getting around 8mpg on the highway. and racing with it doesnt make any sense either. sure, you could make a lot more power with it. but you couldnt use any of it, thanks to your FWDLOL. and you'd need to run at least 2 sets of 1600cc injectors, probably 4 sets, to use nitro. good luck tuning that shit.
 

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Discussion Starter · #3 ·
100% not feasible in a street car. first off, a 53 gallon drum of nitromethane can cost $3000. and it would take about 4x as much nitro as gasoline just to make the same amount of power as you would be with gasoline; so you'd be getting around 8mpg on the highway. and racing with it doesnt make any sense either. sure, you could make a lot more power with it. but you couldnt use any of it, thanks to your FWDLOL. and you'd need to run at least 2 sets of 1600cc injectors, probably 4 sets, to use nitro. good luck tuning that shit.
i was just watching tv with drag racing :)

even 50/50 or 25/75 nitro/gasoline mix doesnt make any sense with std b204 stage 3 ?

i have set of 630 dekas and 044 bosh to fit in near future - if it help with nitro ???

cheers
 

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you'd still be spending $50-75/gallon for fuel. and from what i understand, mixing nitromethane with gasoline is a HUGE no-no. since nitro already has oxygen in it, mixing it with gasoline severely lowers the overall octane rating of the end product, leading to predetonation and failure of the engine.
 

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You are so much better off just forgetting this concept.

And please don't compare these cars with a top fuel dragster again, they are so different in every way and purpose it's not even funny.
 

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Here are some Top Fuel facts:

* One dragster's 500-inch Hemi makes more horsepower then the first 8 rows at Daytona.

* Under full throttle, a dragster engine consumes 1 1/2 gallons of nitro per second, the same rate of fuel consumption as a fully loaded 747 but with 4 times the energy volume.

* The supercharger takes more power to drive than a stock hemi makes.

* Even with nearly 3000 CFM of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into nearly-solid form before ignition. Cylinders run on the verge of hydraulic lock.

* Dual magnetos apply 44 amps to each spark plug. This is the output of an arc welder in each cylinder.

* At stoichiometric (exact) 1.7:1 air/fuel mixture (for nitro), the flame front of nitromethane measures 7050 degrees F.

* Nitromethane burns yellow. The spectacular white flame seen above the stacks at night is raw burning hydrogen, dissociated from atmospheric water vapor by the searing exhaust gases.

* Spark plug electrodes are totally consumed during a pass. After 1/2 way, the engine is dieseling from compression-plus the glow of exhaust valves at 1400 degrees F. The engine can only be shut down by cutting off its fuel flow.

* If spark momentarily fails early in the run, unburned nitro builds up in those cylinders and then explodes with a force that can blow cylinder heads off the block in pieces or blow the block in half.

* Dragsters twist the crank (torsionally) so far (20 degrees in the big end of the track) that sometimes cam lobes are ground offset from front to rear to re-phase the valve timing somewhere closer to synchronization with the pistons.

* To exceed 300mph in 4.5 seconds dragsters must accelerate at an average of over 4G's. But in reaching 200 mph well before 1/2 track, launch acceleration is closer to 8G's.

* If all the equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs $1000.00 per second.

* Dragsters reach over 300 miles per hour before you have read this sentence.

Did you know …

… that the nitromethane-powered engines of NHRA Top Fuel dragsters and Funny Cars produce approximately 7,000 horsepower, about 37 times that of the average street car?

… that one cylinder of the eight cylinders of a Top Fuel dragster or a Funny Car produces 750 horsepower, equaling the entire horsepower output of a NASCAR engine?

… that the gasoline-powered engines of NHRA Pro Stock cars produce about 1,200 horsepower, about eight times that of the average street car?

… that an NHRA Top Fuel dragster accelerates from 0 to 100 mph in less than .8-second, almost 11 seconds quicker than it takes a production Porsche 911 Turbo to reach the same speed?

… that an NHRA Top Fuel dragster leaves the starting line with a force nearly five times that of gravity, the same force of the space shuttle when it leaves the launching pad at Cape Canaveral?

… that an NHRA Funny Car is slowed by a reverse force more than seven times that of gravity when both parachutes deploy simultaneously?

… that NHRA Top Fuel dragsters and Funny Cars consume between four and five gallons of fuel during a quarter-mile run, which is equivalent to between 16 and 20 gallons per mile?

… that NHRA Top Fuel dragsters and Funny Cars use between 10 and 12 gallons of fuel for a complete pass, including the burnout, backup to the starting line, and quarter-mile run?

… that NHRA Top Fuel dragsters and Funny Cars travel the length of more than four football fields in less than five seconds?

… that NHRA Top Fuel dragsters can exceed 280 mph in just 660 feet?

… that from a standing start, NHRA Top Fuel dragsters accelerate faster than a jumbo jet, a fighter jet, and a Formula One race car?

… that a fuel pump for an NHRA Top Fuel dragster and Funny Car delivers 65 gallons of fuel per minute, equivalent to eight bathroom showers running at the same time?

… that the fuel-line pressure for NHRA Top Fuel dragsters and Funny Cars is between 400 and 500 pounds, about 20 times greater than the pressure on passenger-car fuel pumps?

… that depending on size and angle, the large rear wing on an NHRA Top Fuel dragster develops between 4,000 and 8,000 pounds of downforce?

… that the 17-inch rear tires used on NHRA Top Fuel dragsters and Funny Cars wear out after four to six runs, or about two miles? Some brands of passenger-car tires are guaranteed for 80,000 miles.

… that it takes just 15/100ths of a second for all 7,000 horsepower of an NHRA Top Fuel dragster engine to reach the rear wheels?

… that it's desirable for an NHRA Top Fuel dragster to race with its front wheels inches off the ground for about the first 200 feet of the run? This ensures proper weight transfer to the rear wheels, a crucial part of a good launch and quick run.

… that the nitromethane used to power the engines of NHRA Top Fuel dragsters and Funny Cars costs about $30 per gallon?
 

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dude..... no

"Modelsport Professional 25 Glow Fuel is specially formulated to our own unique specification to fulfil the high demand that RC car and truck engines require."

where in this sentence do you see the word automobile?
 

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Discussion Starter · #11 · (Edited)
I dont see word automobile, but i see this :

# 99.95% Pure Nitromethane
# 99.98% Pure Methanol
# 12% Synthetic/Castor Oil Blend

but i found smth else

6. Myth: Adding nitromethane to gasoline improves power.
Fact: Nitro knocks the octane number down severely, and makes the mixture way too lean. Jeff Smith, formerly of Hot Rod Magazine, tried this a few years back and destroyed an engine before he got the Air/Fuel ratio correct.

from:
http://www.pontiacstreetperformance.com/psp/mythsgas1.html

so there is NO for nitro when NO remap... :(
 

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I dont see word automobile, but i see this :

# 99.95% Pure Nitromethane
# 99.98% Pure Methanol
# 12% Synthetic/Castor Oil Blend

but i found smth else

6. Myth: Adding nitromethane to gasoline improves power.
Fact: Nitro knocks the octane number down severely, and makes the mixture way too lean. Jeff Smith, formerly of Hot Rod Magazine, tried this a few years back and destroyed an engine before he got the Air/Fuel ratio correct.

from:
http://www.pontiacstreetperformance.com/psp/mythsgas1.html

so there is NO for nitro when NO remap... :(
you know what man I take back what I said



go for it
 

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I don't want to discourage you and say you should forget it but you should forget it. First of all, if you're planning on supporting 1000hp or whatever it is from your current motor, you would need to build your motor. There's no magic pixie fuel that will make your car just automatically fly and if there is, it's E85.
 
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