mperformance

Does anybody have a Master plan regarding a Nitrous Oxide installation on a 85 12A?

I plan to build a streetported or bridge engine later on, but on the mean time I want to have a nitrous oxide setup for my old engine. Currently my car is running ok, actually pretty ok, doing great...but much rather have a quick fix against some slow turbo cars. Idea is not to go turbo yet. And yes this is for drag...

My goal is 210hp around that mark. Currently my car has the limited hp on 150hp or so according to the mods I got.

Can anybody let me know what would be the fuel requirements, fuel pump, fuel line diagrams, nozzle placement, regulator, switches, reliability mods, etc. Best reliable kit to install, best brands to purchase wether NOS, ZEX, nitrous works, etc. I know that installation is the primary concern for reliability issues. The engine is old but compression is good and I have no problem experimenting. If it blows it blows...but I know that won't happen. Knock on wood ...Never had one engine blow up yet. i got plenty of spares.

If anybody has a similar setup, or knows how to go about it let me know.

I'm not asking for information on the best way to make the power or if its reliable or not...please spare me those comments. Like I said there is an engine in the works. This is just for fun...but it will be reliable.

Thanks.

<<<flame suit on>>> i'm ready shoot.

hotty

I dont see the big deal about N.O.S. Ppl who flame you for it are hypocrits. nos is just like race gas - it is something you pay for to make your car go faster. just because the majority of ppl with nos are stupid hondas and other gay cars. my opinion is you 'run what you've brung'. thats my opinion, no offense to anyone.

Redwood

For better results on this question, trying presenting it to the "Rotary Performance" section (or search that area). They're always talking nitrous in there and I bet they could steer you in the right direction. I know that a wet system is more desirable because it's safer (*guaranteed* to have enough fuel with the nitrous). On the fc3s.org there's a great write-up of an install on a 2nd gen. Little different, but probably worth reading through. Good luck, and get some dyno numbers after

Remember, hp is hp whether it comes from a turbo, SC, or nitrous.

mperformance

cool, thanks hotty thanks redwood...will do...

mperformance

looking at kit 05030 from NOS:

Six-second technology for the street or strip.

For use with any 4-cylinder or Mazda rotary engine, with carburetor, 75 HP minimum, Sportsman Fogger nitrous oxide system

Now you can have the nitrous oxide technology that's allowed racers to run six-second quarter miles--the NOS Sportsman Fogger kit. It's designed just for street/strip racers and offers superior atomization and tuning by injecting precisely measured amounts of fuel and nitrous into each individual intake port. Power levels are adjustable from a minimum of 75 HP by changing the jets in each Fogger nozzle, and the latest in high tech solenoids provide an extreme degree of reliability. The kit includes the famous Fogger nozzles, Powershot nitrous and fuel solenoids, a 10 lb. unfilled bottle, aircraft-quality braided steel hose, jets, fittings, tubing, switches, installation hardware, and a tap for plumbing the intake manifold for the nozzles.



Sold as a kit.



PRICE $515.39 at summitracing.com


WHAT DO YOU THINK?

This is a direct port WET system...pretty safe if installed correctly.

has the basic stuff...I'll add more accesories and an ignition module to play with ignition when spraying, maybe even a knock sensor. I already have an A/F gauge. This is for a carb setup.

Required parts:
* This system requires the use of a fuel pump(s) designed to operate between 5 to 10 psi, with a flow rate of 0.1 gph per horsepower at 6 psi.
* Intake manifold must be removed for installation.
* Racing fuel required

A carter 7 psi fuel pump should be more than enough although I plan to run tow pumps...




I like the NX systems better but it's close to $1000.00

Directfreak

iTrader: (2)

[QUOTE]Originally posted by mperformance
[B]For use with any 4-cylinder or Mazda rotary engine, with carburetor, 75 HP minimum, Sportsman Fogger nitrous oxide system

75 hp on a stock 12A = Too much,

WHAT DO YOU THINK?

Racing Fuel? What a Pain in the @$$.
You plan on running a seperate fuel cell for the Racing fuel?
Do you need to drill and tap?

Sounds like overkill. Isn't there a smaller setup, like a 50 shot?

My 02 cents.

mperformance

no man ...I guess racing fuel is just high octane fuel...that is a mistake. Common man...

about drilling and tapping yeap that is the whole point. One nozzle on each runner of my 79 intake. Should look sweet.

not overkill sounds about right...I plan to shoot a 150hp later on, on a bridge port.

moremazda

iTrader: (4)

150hp, huh? What carb do you have?

V8kilr

im very interested to see how this goes,
everyone who read my latest post should know why.

mperformance

stock...

FLAMEproof suit with double insulation now ready...

DoriZaru

The Sportsman Fogger setup is the best/pretty much ONLY one you could choose for a stock carb/intake, as they don't make a plate to fit under a Nikki carb. As long as the carb is tuned right for the engine, it will not be a limitation when the nitrous is on. The Fogger systems are wet kits that allow for very precise tuning, and can be installed on pretty much any intake manifold, but the install procedure is a little bit involved. Race gas would be necessary on a higher compression 4-cyl if you were trying to run a bigger shot, but considering the low compression ratio of a rotary, I would think that 92 octane on a 75 shot would be sufficient.
The little red button is addictive. Be careful.

mperformance

DoriZaru thanks...but man I want people to flame me...hahaha common folks, this thing is going to be over 250hp without porting....where are the turbo folks?

Nahh just kidding...but yeap seems like a decent deal to mess around a bit. Still my bridge port is getting ready and I'll experiment with the stock port.

BTW my carb was tuned by myself it's running a bit rich but it took me several weeks to get it just right. I played with the air bleeds and did some minor grinding and removed restrictions. The choke plate was removed and I'm using a stock 79 intake. The car is running awesome...tonight I tested it and it's ok...low end power is ok but not to my liking. High end power is ok too but after 7 grand I feel there is a drop in power...that is defenitely the carb not letting it breathe.
I still want to keep the stock carb and somehow hide the fuel/nitrous lines to the runners.... you know sleeper factor.

Laterz

elredondel can you elaborate?...careful man...got to know what you are doing if you bought your car like that be careful...

DoriZaru

If you are running your stock fuel pump, I'm pretty sure it's costing you power. My RX-2 (w/ 83 12A engine) was a pig on top (6200-7000) until I replaced the FB fuel pump with a Holley Blue pump. The symptoms of fuel starvation are exactly what you describe. A Carter pump would work well for a street -7. You'll also need one mother of a fuel pump for your nitrous system- I'd recommend a dedicated system with its own lines running a Holley "Blue" or equivalent and a quality adjustable regulator. Overkill for a 75 shot, but you can never have too good a fuel system when running nitrous, and you won't have to re-engineer it if you decide to step up to a bigger shot. I strongly recommend running electric fuel pumps on heavy-gauge wire straight from the battery (with an inline fuse or breaker) and a heavy-duty relay for the switching.

MIKE-P-28

iTrader: (1)

Go for it, put the NOS on it... But everytime you kick it, put $500 in the console you gonna need it

Pedestrian X

damn, you must have good self control!

mperformance

I already have a 7psi Carter DoriZaru...fuel pressure had to be dropped a lot...with a holley FPR..main problem overflooding the bowls. Got rid of that problem...it's not fuel starvation but rather CFMs from the carb..it's maxed out.

How about running dual pumps? I am thinking about it. But I think it's overkill according to NOS specs the carter 7 psi is overated for this application...it flows more than enough for the stock carb and the sportmans fogger system even if pushing over a 150hp shot...my problem will be regulating it at less than 2psi for the nikki and over 6psi at the nitrous/fuel system.

time for Nawz...

thanks!

mperformance

MIke-P-28 you got it...

rx-7 crazy

theres a guy in our area that had a white 83-84 12a that ran a plate system, fit between the carb and manifold, once they got it installed right it was pretty reliable

V8kilr

just "T" off the line right after it leaves the fuel pump and run a second line up to the engine bay,
run a nice fuel pressure regulator for your carb and something like a purolator for the nitrious

who told you to cut your fuel pressure down to 2 psi on your nikki anyway?

mperformance

somehow it runs perfect at 2psi...

i'm not too off ...Yaw power runs extremely low pressure too. Took a while for me to figure it out...remember pressure doesn't mean low volume.

about the T yeap I'll do that but I'll run two FP gauges to make sure both pressures are ok.

mperformance

^

timmya2

im very interstead in the zex system as its a very simple layout and ery simple installation..

i hear alot of good things about it..

anyone else run a zex on theircarbed fb?

wwilliam54

pm judge ito
he > * with n2o