Assuming the motor is built as strong as possible (Oliver rods, billet crank, severe duty valves, etc, etc) how much nitrous can you run with pump gas?

At what point is it required to run race gas?

Is this more dependant on tuning, and not just the size of the shot?

How does a multi stage or progressive set up play into this?

I know that this is probably a question for the Nitrous section, but this is the only section that I ever find GOOD answers in.

Raymond

 

it seems that most people run into problems with N2O bucause of timing. on a 9.1 compression engine a 200hp shot is possible on pump gas. This requires the timing to be backed down 2 deg. for every 50hp fo N2O. As long as the fuel and nitrous systems are correctly installed properly and capable of suplying the proper amount and mixture of nitrous and fuel.

to run very much N2O you must consider that the dencity of the fuel charge is greater so the dynamic compression of the engine goes up, but the intake charge is alos a lot colder so it helps to prevent some detonation. the kicker is that a n2o charge burns quite a bit quicker than regularly. so this is the reason for the need of the timing drop.

the less compression you have the more n2o you can run on pump but I would be very cautious an out of turn engine or n2o system could spell disaster for the engine. I would spend some time on a dyno and tune the engine in na, then tune the n2o system in a little at a time watching your af ratio, timing, and keeping a close eye on detonation. I would not just go out and try to run a lot of spray on pump gas because every bend or junction in the nitrous or fuel lines can change the calabration of the system. so your 200hp pills may be giving you a lean 175hp shot because of improper metering that could cost an engine. just make shure you system is tuned.