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Revolution Is My Name
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Discussion Starter #1
The class I race in has new rules that allow SB's a 82N jet and BB's a 70N jet. Also a -4 line.

I normally run lower pressures on the nitrous side 850-900. When you run higher pressures do you actually get more flow? And what is the highest nitrous pressure you can run if it does help.

I know at higher pressures it tends to damage plungers.

Thanks for your input!
 

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The class I race in has new rules that allow SB's a 82N jet and BB's a 70N jet. Also a -4 line.

I normally run lower pressures on the nitrous side 850-900. When you run higher pressures do you actually get more flow? And what is the highest nitrous pressure you can run if it does help.

I know at higher pressures it tends to damage plungers.

Thanks for your input!

When I was in a jet limted class, there was no -4 line restriction...but I always like to run between 900 and 950 on nitrous pressure. Seemed to drop almost none in the 1/8 mile.
 

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nightmare on any street..
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I am running 275 Real Street here in NC this year. We are a jet limited class with a -4 feedline and 1 bottle. We have to run a .082 on a single N20 Jet, 57's on cross car, 35's on double cross bar, .026 on a fogger.

I changed my mind about 50 times on which kit to run. I had a IS Double cross bar but had to many clearence issues. You have to have a spacer between the plate and carb. i have a stock hood. Now I have a fogger, which is coming off the car as we speak in favor or an IS Real Street setup....


Like z289sec said, we see very little bottle pressure drop. On the fogger I would run around 1050...By the time I purge the motor 2 times, and purge kit 1-2 times, its town to 975 or so....
 

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Revolution Is My Name
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20,381 Posts
Discussion Starter #6
I am running 275 Real Street here in NC this year. We are a jet limited class with a -4 feedline and 1 bottle. We have to run a .082 on a single N20 Jet, 57's on cross car, 35's on double cross bar, .026 on a fogger.

I changed my mind about 50 times on which kit to run. I had a IS Double cross bar but had to many clearence issues. You have to have a spacer between the plate and carb. i have a stock hood. Now I have a fogger, which is coming off the car as we speak in favor or an IS Real Street setup....


Like z289sec said, we see very little bottle pressure drop. On the fogger I would run around 1050...By the time I purge the motor 2 times, and purge kit 1-2 times, its town to 975 or so....
I'm running a NOS crossbar but will be using only one bar for this class.
 

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the track were I race has their own mean street class that is restricted to a .093 oriface size for the nitrous and a max of a 750 cfm carb/Fi induction.
 

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Are you allowed to run a 15lbs bottle? if so run the bottle at 30-31lbs and heat it to 950psi most power and with very little psi drop.
 
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