aarons

I haven't seen too many 7 with nitrous on it. Can the rotary handell nitrous??? What mods would I need to make??

mattreeve

Yea I just been readin throught my racing beat catalog And i think you need to adjust yor timing or something.

Im not sure though cus you might cause detonation, which would blow a seal on a rotor inside your engine.

NOt GOOD

snwyvern

Nitrous on a 12a would be kind of... Lame? There are more reliable less random ways of making power from the 2 rotor engines that we (Probably) share... See faq.

That aside, on the fuel injection powerplants it's a bit more convienent as far as plumbing goes... Otherwise you're stuck with a (lame) phelonic setup under the carb... 2nd gens and of course 3rd gens are the Nitro stars... At my local drag strip there's even a Renesis that has a 8-shot

fcdrifter13

Dude do you even know WTF you just said. Nitrous is very predictable and safe to use in the amount a motor can accually handle. Also a the plate system is a very good design and is made for more the weekend racer. nitrous is just an oxidiser that does basically what a turbo does....It puts more air into the engine resulting in more power...although this causes a leaning out effect that can cause detonation. There for adding a lil bigger jets on a carb and higher octane fuel and you would be fine. I have used nitrous before and I like the results(this was on a 87 with FI removed and a holley DP instead) and I didnt have any problems what so ever.


Oh an 8-shot just wow. STFU and go home that was the lamest thing anyone has ever said. A lousy 8hp increase that wouldnt be worth mentioning.

vxturboxv

iTrader: (2)

Pretty sure he ment 80 shot.

Just a few things on N20....

Yes you need to turn your timing down.

2* per 25 hp shot with a rotary will be fine.

A cooler plug is also reccomended 1 heat range lower than stock for a 25 shot and 2 for a 50 shot.

I wouldn't run more than a 50 shot on a 12a.

A wet shot plate system injects fuel in with the N20. So changing jets in the carb isn't necessary. In fact the great part about n20 is that as long as you keep it moderate (under 75 shot) You don't need to do anything to your setup to run it. Changing carb jets would change the driveability of the car when not useing N20. Thats bad in my book.

About the only mod you would need is a larger fuel pump to keep up with the extra volume of fuel you will be adding. Also rotary's like to be pug rich with n20, so if NOS tells you to use a 42 fuel jet and a 46 NOS jet to get a 100 shot I'd just flip the two jets aorund. This will wash out the n20 a little and keep you on the rich side more like a 85 shot.

Don't get greedy with it is my only suggestion. A 50 shot is a huge gain on the little 12a.

Good luck!

fcdrifter13

I was talking about the old old plates that didnt inject the fuel with the nitrous just a dry shot

Rafy13bt

Come to PR i will take you to the race trak all the rotaries runs on nitro they do about 7.37 sec 1/4 mile at 175mph.. I saw one yesterday 7 sec flat on a 20b eng. http://djfiebre.com/laana.wmv [/HTML]

KNONFS

iTrader: (14)

Bro, how do you know that La Anais is running nitrous? You know its just a rumor, right?

BTW Its 7.37 @ 183MPH

aarons

im talking about the SE 13b?????

RX7withNitrous

I had a 50 shot on my 91 n/a only mods I had were intake exhaust I never had any problems with it and I sprayed alot. But I've always had good luck with rx-7s.

aarons

dry or wet shots??

RX7withNitrous

This mixed with the fuel and sprayed into the intake. I can't ever remember if that is dry or wet.

Rafy13bt

Dont know if it runnig nitrous just saying most of them do.

mazdaspeedrex

That is a wet shot.
I have a 200 shot direct port kit in my garage waiting for my new motor! I had it already installed (but never used) in the manifold for the Mikuni I had on my old 12a waiting for a good rebuild. I have since decided to do the TII swap and use it on that. It's strictly a race setup so I'm not expecting long engine life anyway.

vxturboxv

iTrader: (2)

Doesn't matter, same rules. If anything the 12a's are a little more sturdy that the 13b's. Dont get greedy start with a 50 and a 255 or 175 lpr walbro fuel pump and You'll be fine...

snwyvern

... I've rebuilt about a billion engines that have had proper applications of NOS from install. They've all had corrosion, and det problems that were *EVIDENT* from eyballing piston heads and cylinder walls. It's important to note that NOS (And NOS-type systems) are a no-go here. I'm in Colorado, and like with forced induction, the elevation does funny things to rated power bands as well as the fuel/air mixture... Not to mention that between my drive to work and home I have a 1500 foot diff. in Altitude, not to mention high-alt weather can make that difference seem like double that in static pressure/humidity... And my situation is indicative of the region.

... Anyway, without hardcore engine management hardware and software the drivability of the vehicle over long periods of time (I.e., stock lifespan) is severely limited. This is true of any engine you put NOS on, let alone a rotary


And yes, I did mean 80.

kevinbtz

iTrader: (4)

I used a 120 shot on my 12a that was in my 7, I ran 80 lbs of no2 through it with no problems, and now that 12a is in my truck that I use as a daly driver. I just got my jets in to do a 40 shot on it....lol