Ryde _Or_Die

Hey I have an 88 N/a & was thinkin of NOS as an option. I have no experience with it so I just want to know everything. Like I know if u use too much it will mess ur engine up. I was wondering how long it would last, & how much it costs. Like to refill or whatever. Any dos & don't I should know. I just wanna be able to put it on em when people try me, lol. Everyone please let me know any & all info. Thanks.


Chris

RotaryMan88

www.fc3s.org has a write-up on both the wet and dry setup. I will doing the NOS on a '90 GTU project car that I hope to be starting w/in the next few weeks here!

fc3s.org

I have installed both the wet and dry versions of NOS in FC's. I recommend the wet system unless you are a good tuner. The wet system injects fuel with your NOS so that you don't run lean as easily as with a dry system. The wet system costs around $400 from either Summit or Jegs. It is a complete system with everything you need to install it other than basic hand tools. It takes about 4 hrs to install a wet kit.

Key things to installing NOS to your FC. Make sure your motor is in good running condition. Get a compression check to make sure your motor is capable of running it without blowing it up. It is cheap insurance for mods like this. NOS usually costs between $2-$4 for a refill at most rice shops or muscle car shops. The bottles are typically 10lb so they cost about $20-$40 to fill. With the basic wet system described on our site, you can get alot of NOS time with that bottle due to the fact that it is only a 50 shot of NOS. Read the writeup before you start the install, and feel free to ask me anything on it.

Sebring7

dave, did you go to the so cal sports car club meet? Only people's name I remember is Joe Romeo with the 10th AE.

Mykl

mmmm, nitrous.

That comes after I deal with my clogged cat. Headers and a presilencer would be nice.

Ryde _Or_Die

thanks guys

MasteRX

Hey fc3s.org, what about tuning the system? Like swapping the N2O and Fuel jets to get the proper mixture? Do you have to do that? How do you know the mixture is right?

Also, which dry system did you use? If you go to NOS website they have a "import kit" and a special kit number for the RX-7 (also includes a couple other Mazdas). Did you use that kit or a different one? Also, on the site you said that you have to keep from going full throttle until 4,000 rpm. Is it possible to hook up an RPM switch, so that it is fully automated? (I don't see any reason why one couldn't)

fc3s.org

Yup, I even have a shot of your cars on my write-up on the site =) I was in the white 91 vert that day. I didn't have a passenger seat for my cupholder

fc3s.org

The mixtures are given in the NOS installation manual. They tell you which fuel jet to use with which NOS jet. I used my EGT and A/F gauges to verify their settings.

I used their basic kit, no made for any model, but for up to 2.3L V6's. They stopped making the RX-7 specific kit almost 2 years ago. To answer the RPM question, yes you could. Also a steering wheel button would work well. The other option is to have the switch mounted to the center console, and even under full throttle when you are above 4K, flip the switch and your off

Sebring7

Now I remember you! Post them shots of our cars! Were any of them up in the mountains?

Btw, i'm thinking about getting the nos system for my car as well. I'd go with the wet system because I want to use it as little as possible, so it could last be quite a while.

Ryde _Or_Die

Do you need any other parts besides the NOS kit they have? Know any websites for it? I know I want the switch for my steering wheel, I also heard of a bottle heater, what all accessories are there? Like do I need any kind of boot gauge ect? Thanks again.

Chris

Rx_treme

whats the deal with no NOS below 4k rpm's??? that, along with the rest of first gear is where it needs it most. thats kinda weird.
Jason

Ryde _Or_Die

Any other input?

MasteRX

NOS is still showing the RX-7 kit on their website, I e-mailed them and asked them a few questions. I will let you guys know what they say.

fc3s.org

The NOS kit comes with everything you need to install it. Get the kit # that I used for my wet install and you can follow along step by step and install yours following the instructions and my write-up.

I don't recommend a bottle heater. You are not at the stage of racing to need one, and if you leave it on and forget it, your car will explode. You can get a NOS pressure gauge, but I just got one and put it on the bottle, because you have to use SS braided lines for the gauge to come into your cockpit area. Kinda pricy.

fc3s.org

Under 3800-4K rpm, you don't have your secondaries online yet, and when they come online, there is a fuel pressure drop to accomodate the other 2 injectors comming online. This could lead to detonation if proper fuel ratio is not maintained. If you are racing someone froma start, you should be launching at about 4K anyways, so you would be using it from the line =)

fc3s.org

I hope they reply to you I tried to e-mail them about that when I was ordering my first kit for my vert. Never heard back from them. I finally got a dealer to get an answer from them and that is when I was told it was unavail anymore.