SE-R Cup SRX

Trying to figure out a way to get better spool and not sacrifice top end. We are talking about the idea of squirting little shots of nitrous when boost levels fall below what's desired at WOT. Example would be following slow traffic through a corner onto a straight and needing to squirt past. Foot goes to the floor and the nitrous should give the engine a little lift where it needs it and then shout off when the turbo starts coming on boost.

It looks to me if you notify the race director in NASA it's legal. Any thoughts?

for some reason, the thought of nitrous in a road car scares me! I'm thinking it may be time for an increase in displacement.... cheapest option would be a overbore. The very pricey, but greater increase, would be a stroker kit.

a turbo nitrus road car? that is scary.

steve, i haven't read the rules so i don't know if its SRX legal or NASA lega, but i remeber hearing that some of the American Iron extreme guys a couple of years ago were doing this (hitting the NOS) on the straightaways..........or were talking about doing it...........

not sure how secure that NOS bottle would have to be, where it would be in the car, and if you need the equivalent of a fuel cell around it. ;-)

I do seem to remember that the Cobalt SS that GM built for time attacks, the famous one from 'street tuner challenge' had nitrous on it. And they used it on the straights. I think they were only getting 250-300whp from the motor and they didn't want to swap blowers, so they added the nitrous.

steve, i haven't read the rules so i don't know if its SRX legal or NASA lega, but i remeber hearing that some of the American Iron extreme guys a couple of years ago were doing this (hitting the NOS) on the straightaways..........or were talking about doing it...........

not sure how secure that NOS bottle would have to be, where it would be in the car, and if you need the equivalent of a fuel cell around it. ;-)

I reread both sets of the rules today and I didn't see anything in the SE-R cup SRX rules disallowing it. The NASA CCR's state that the Race director needs to be notified of any alternate fuel other than petroleum based.

I don't think nitrous is as scary as we think. It's just super packs the combustion chamber with oxygen for a burst of energy if enough fuel is present. I am talking about just a little bit (like a 25 shot) and also throttle and boost level dependent. I wasn't really thinking of spraying down the front straight at Summit like the AIX guys probably were talking about! lol! Just enough to overcome the lag of the 2871 .86 but still be able to keep decent power upstairs that the turbo is capable of making.

Anyway, it's only in the thought process stages. Right now it makes power ok so I am just really thinking of further development for next season and so on.

I reread both sets of the rules today and I didn't see anything in the SE-R cup SRX rules disallowing it. The NASA CCR's state that the Race director needs to be notified of any alternate fuel other than petroleum based.


It's not fuel, it's an oxidizer :D I don't think it can get much safer than having a blow down tube. You can also try the .64 housing.

2006 SE-R Cup Rules and Classifications, rev. 3.9, Section 6:
"...
Nitrous oxide tanks are prohibited in all classes; however plumbing, injectors and other electronics and/or lines for such a system are allowed provided the system is disabled for competition and the tank is removed."

By my interpretation, "all classes" includes SRX.

2006 SE-R Cup Rules and Classifications, rev. 3.9, Section 6:
"...
Nitrous oxide tanks are prohibited in all classes; however plumbing, injectors and other electronics and/or lines for such a system are allowed provided the system is disabled for competition and the tank is removed."

By my interpretation, "all classes" includes SRX.

Thank you. Answers that.

As I read the rules again I realize I stopped at "SRX is unlimited" when I read them earlier. I should read more thoroughly next time. Sorry bout that.

i remeber hearing that some of the American Iron extreme guys a couple of years ago were doing this (hitting the NOS) on the straightaways

Just to set the record straight, Nitrous is verboten in AI/X as well.

http://www.nasaproracing.com/rules/American-Iron-Rules.pdf

Rule 7.1. I doubt anyone would try to break this rule, since it's pretty hard to hide.

Perhaps they were talking about someone walking away down the straight, as if they'd hit the nitrous button.

Jason

Just to set the record straight, Nitrous is verboten in AI/X as well.

http://www.nasaproracing.com/rules/American-Iron-Rules.pdf

Rule 7.1. I doubt anyone would try to break this rule, since it's pretty hard to hide.

Perhaps they were talking about someone walking away down the straight, as if they'd hit the nitrous button.

Jason

i think that is a more recent rule change, when i heard that i was at CMP in 2002 i think :biggthump

I don't think nitrous is as scary as we think. It's just super packs the combustion chamber with oxygen for a burst of energy if enough fuel is present. I am talking about just a little bit (like a 25 shot) and also throttle and boost level dependent. I wasn't really thinking of spraying down the front straight at Summit like the AIX guys probably were talking about! lol! Just enough to overcome the lag of the 2871 .86 but still be able to keep decent power upstairs that the turbo is capable of making.




FWIW, it's not the nitrous itself that's the problem. It's the tank. Road racing involves a lot of bumps from the ground, walls, other cars... the last thing anyone wants at those moments is a projectile coming out of the car when one of the fittings break.

FWIW, it's not the nitrous itself that's the problem. It's the tank.

Is the contents under more pressure than the fire system bottle? I have never had nitrous in any of my cars so I am not familiar with it.

I know it's a mute point since it's illegal but I was just curious.

I have decided to go smaller with the turbo to make more tq lower in the rpm range and add the cams I have sitting here to help the hp output a bit.

Is the contents under more pressure than the fire system bottle? I have never had nitrous in any of my cars so I am not familiar with it.

I know it's a mute point since it's illegal but I was just curious.

I have decided to go smaller with the turbo to make more tq lower in the rpm range and add the cams I have sitting here to help the hp output a bit.

Save the nitrous for Riesentotor. Brian thinks you're slow. Doh! :laugh:

Is the contents under more pressure than the fire system bottle? I have never had nitrous in any of my cars so I am not familiar with it.




Fire systems, I imagine, are in the range of the same pressure. However, they are certified, self-contained, and not under a temperature requirement (over which they can explode).

The nitrous bottles would need a lot more regulation and fail-safing than even fire system bottles to be considered acceptable for road racing.

Fire systems, I imagine, are in the range of the same pressure. However, they are certified, self-contained, and not under a temperature requirement (over which they can explode).

The nitrous bottles would need a lot more regulation and fail-safing than even fire system bottles to be considered acceptable for road racing.


Everyone remember: This? (http://www.saturnspeed.com/nitrousexplosion.htm)

Everyone remember: This? (http://www.saturnspeed.com/nitrousexplosion.htm)
That guy was an idiot. That would never happen, thats more of a darwin candidate there :biggthump I remember reading about this 7 years ago. He wired his bottle warmer to the battery direct, and forgot to turn it off. He also fuxed with the valve which prevented the safety burst valve from openning. Resulting in an exploded maxima. I like the Fast and Furious blue nitrous "explosion" better :D

That would never happen,

"Never happen" and race cars don't go together. I was thinking more of an on-board fire though.

"Never happen" and race cars don't go together. I was thinking more of an on-board fire though.

It would take hours for that to happen. But i know what you mean.

Nitrous Oxide is totally non-flammable. In addition, it doesn't really aid combustion very well until it's under heat and pressure, where the nitrogen detaches from the oxygen, with the nitrogen acting as a buffer to calm the explosion down. The best power adder would be pure oxygen, but it's way too violent.

The blow down tube would help, the problem is if the bottle came loose, smacked something, and broke. Nitrous bottles are kept at between 900-1400psi and make excellent rockets. Of course, so do fire extinguishers. I think the main thing they want to avoid is ANOTHER rocket in your car that only makes you go faster. A fire system/extinguisher helps with safety. In addition, I think that if conditions were perfect, the nitrous would help your car-b-que, but we're talking a slight chance.