I am considering adding a "small" shot of Nitrous to help me pick-up a few tenths lost when I spin.... typically for bracket racing. I would like to run a 75 shot and literally no more. But I have some questions due to my lack of experience with Nitrous.

1) Is their a throttle plate system made for a 58 mm throttle body or do I have to machine the plate myself to accomodate the larger bore ?

2) With running a Superram, it is my understanding when introducing the Nitrous at the throttle body or before it, the Nitrous loses its speed and settles and puddles within the plenum.... is this true, and if yes, what is the solution ? I do not wish to go to a direct port set-up, especially for such a small shot.

3) I want to run a dry set-up.... with only a 75 shot, I assume I can get away with this ?

4) I assume my stock fuel pump can handle this ? With a 75 shot, I believe my flywheel hp would be around 500ish is all.... I believe the stock fuel pump can go to 500 flywheel ponies.

5) I'm running 24lb injectors... I assume this would be okay with only a 75 shot ?

6) Do it feel it is necessary to purge with such as small shot ? I'm guessing yes, considering I would want to clean the lines for every pass beforehand. Is there a big difference it I don't with such a small shot ?

7) Does anybody know of any type of a budget Nitrous kit already put together for the application I describe above ?

8) Does anybody have any experience with the Nitrous express shark fin nozzle that is mounted a few inches before the throttle body within the air coupler ? Good or bad with a Superram ?

9) Who here runs Nitrous with a Superram ? Can you share your results ? Part #'s ? Cost ?

10) Which sparkplug should I run with just a 75 shot ?

11) I will retard timing 2-4 degrees with a 75 shot... I assume this would be sufficient ?

12) Anybody here have what I want for sale ? I'll buy rightaway if its what I need.

Thanks for anybody's help !! :):)

cheers,
Beach Bum

 

wow, that's alot of questions.

One thing that I noticed was that you state you want to run a dry system, how will you get the extra fuel in the motor ? Ususally you have to have a Nitrous chip or a DFI setup which will add the extra fuel needed.

I think you need a "wet system".

What you are trying to accomplish is an awesome idea, so you will dial hard and if you don't spin, no nitrous. If there is spin, hit the nitrous and make up the time.

Vic

 

Hi Vic,

The Nitrous system wouldn't be just for bracket racing, but also for those club type events where we've just trying to run an et.

Regarding dry vs wet.... I'm not totally against wet, in fact the Nitrous express shark fin nozzle is a wet nozzle, but I was thinking of just cranking up the fuel pressure for such a small shot.... but dunno if I can get away with it or not. It does seem logical that fuel running through the Superram plenum would have a hard time getting to where it needs to go.....

A lot of questions... yes... but I want to make the correct purchase the 1st time. :)

btw, anything new with your set-up lately ?

cheers,
Beach

 

Beach you've got an IM.

 

WOW!!!!

1) I'm running a plate on a 52 MM I do believe that it is larger, 58mm??? you can machine it out if you run the older style plate with foggers. If run the newr=er spray bar it maybe very hard to machine but ask NOS it is probably 58mm anyways.

2)I haven't had a problem yet I have heard horror stories but who know what crazy things these people are doing. Just becarefull not to snap off the thottle, stay in it for a second after disengaging the NOS. This should clean out the super ram. If you snap the TB shut than the NOS gets trapped.

3)???? I think you might need to run a wet system with a TPI

4)I upgraded to a Grand National pump and it seems to be holding up OK

5)Why Not

6)You don't need to purge but keep in mind the fuel is alot closer so you will bog it during the time it take for the NOS to get from the bottle to the engine. Purging attemts to equal out the time.

7)NOS kit 550 beans, Safety fuel pressure cut off $36, Purge Kit $95, jets for tuning about 5 bucks each

8) No

9)I do, E-mail me for results can't post times on the Forum F bodies watching :D All above + NOS pressure gauge $40 & alot of jets some places only sell you an 8 pack :eek:

10) I run normal plugs, 75 shot I would change but check often

11) I run stock setting but run 10-11 degrees N/A, becarefull of chips that advance timing

12)No, but my car was for sale a couple months ago

 

Thanks for the tips !!!

I think it sounds like the wet plate system might be the way to go even though the fuel may puddle a hair.

Sure wish I knew somebody that had tried that Nitrous Express shark fin style nozzle.... looks fairly stealth.

thanks again. :)
Beach Bum

 

I'm not to sure about spraying into the TB, seems like it could really screw up the flow.

 

NOS has a dry kit that uses nitrous psi on your fuel regulator to kick it open when the gas hits, seems a lil hookey but they swear it works. NX Express wet kits are the popular items around here, you can prevent puddling by introducting the nitrous higher in the RPM range. with a 75 shot comming on at 3500 you should be okay. TPI intakes are the prefered nitrous manifolds becuase there lack of flow creates great velocity. minirams on the other hand are the most dangerous with wet kits. since a superram is basically a really high flow shorter runner TPI you should be fine. one thing to really watch is your air/fuel mixture. i'd spend the $75 to watch a couple passes hitting the 75shot on the dyno with a wideband. i've seen dry kits work but if it was my $ i'd buy NX Express, i've just heard more positives and witnessed many good results. you can introduce the nitrous at the TB or if you have a silicone intake duct it could be bunged into it. i'm not sure why as i'm not really a nitrous guru either but a lot of the more successful people have the fogger a few inches in front of the TB.

 

Beach, I am duplicating L98Terror's setup on my 383 SR. We are tuning it on the stock L98 this week and will fire it on the stroker when it goes in this month. I'll let you know how it works, but I have witnessed Ken's car run the old school wet nozzles repeatedly on the track and um, *cough* elsewhere *cough* to know it works well.

 

Todd,

I have been playing with nitrous for a long time, probably as long as I have had my license, and I will give you my honest opinion on the questions you have.

Don't run a dry shot, run a wet. You will get a better A/F mixture.

The setup you have right now is perfect for anything up to 100 shot without ANY changes whatsoever.

No you don't need to regap your plugs with a 70 shot. .35 is fine

No you don't need to mess with timing. 6 degree base is fine.

The NX shark nozzle is a good nozzle and that is what I have but I don't see or feel a difference from the NOS nozzles.

NX parts in general are better quality than NOS.

I don't think you need a purge, but it doesn't hurt. I actually think no purge is better because the nitrous comes on smoother. With the purge it hits really hard with a big shot and can break the tires loose insantly.

You will run 10s if you run 100 shot.

 

I am finishing my install today (hoepfully) but I am confused by this statement. Ona wet system, without a purge, won't the motor bog bad becasue of the additional fuel before the nitrous hits?

 

Thanks for the advise everybody !! :)

I am leaning towards the wet Nitrous Express kit that uses the Shark fin nozzles that are mounted in the air coupler.

Paul, when are you next headed to the strip ? Next SRA I assume ? I'd like to study the details of your set-up including where you mounted everything, etc....

As a final note, Nitrous Express is rumored to be coming on board as a Corvette Challenge sponsor, think I'm going to wait until that happens and then see what kind of a deal they will make to a Corvette Challenge racer.

thanks again
Beach Bum

 

Yea, I would like to see that too. Please post the results of what you decide on and how the install goes. :cheers:

 

I'm running a TNT 150 wet system in mine. I don't think you'd have any issues at all about "puddling" in the intake. WIth the amount of vacuum and the air speed going into the engine, nothing will sit in the intake for more than a split second. I had to fabricate a plate, due the fact that I had no hood clearance and it was only 52 mm bore on the plate, and my tb was 58. This is my first nitrous system, so I can only honestly talk about this setup. TNT makes a high quality system.