12akid

I Want To Do An Almotor Setup With Some Nos, But I Wanted To Go For A 13b 4 Port With S5 N/a Rotors But Thats A Pain In The *** To Find All Those Parts, So Was Thinking Just Keep The 12a ,and Brigde Port It, And Put A 125 +shot Of Nos, With A Holley Carb A Nice Lil Allmotor Setup, Im Trying Get To 12s Allmotor With Some Nos

dean23

1. are you looking for a motor?
2. Read this https://www.rx7club.com/showthread.p...3&page=1&pp=15

85rotarypower

If your not looking for a motor right now, you will be within the first few runs on that 125 shot. Rotaries don't particularly take well to nitrous, hence the reason noone really uses it.

rxtasy3

iTrader: (2)

uuhh, correct me if i'm wrong but isn't "all motor" just that? no help from such things like superchargers, turbos, or nitrous?

85rotarypower

I was going to ask the same thing but since 12akid seemed so sure it would be all motor I thought mabey nitrous on a motor is still considered all motor.

mar3

iTrader: (8)

All motor is just that...naturally aspirated with no power adders, period. No juice, no turbo and no supercharger. Go easy on nitrous if the motor hasn't been built for it...75 shot tops and it better be wet, no dry Zex systems.

jarath

From what I've read and I'm no expert... Nitrous is just another way to force more oxygen into the combustion chamber... whether you do it with forced induction (turbo / supercharger) or do it chemically (Nitrous) it achieves the same added oxygen insertion goal and if the motor isn't setup to handle the extra oxygen & fuel it you will probably damage the motor. No matter what you choose, forcing more oxygen into the motor is not all motor.

mar3

iTrader: (8)

Engines come from good engineering departments with anything from 3 to 20X safety factor for reliability's sake. On a really high mileage engine, you're taking a chance just putting on a high flow exhaust. At 100,000 miles or so, a 75 shot should be safe...some guy on this very board runs that 125 shot, but never says if his engine was rebuilt or how long it lasted.

Nitrous adds more oxygen, but you need more fuel to burn that extra oxygen. It also cools the intake charge so you can stuff more oxygen in each sweep of the rotor face past the intake ports. Nice one-two effect. The same basic block was turbo'd in Japan with a factory warranty, so taking the 12A from 105 to 180 HP for a short nitrous burst shouldn't be painful to the engine....the transmission and rear-end? That's a different story altogether if you're running sticky rear tires...

12akid

I Was Saying An Allmotor Setup As In High Comp Rotors Aka S5 And High Reving As In Brigde Port, With Nos, Thats The Setup Im Think Of Doing Cuz I See A Lot Of Guys At The Track Runing That And Doing 12s And 11s

12akid

But This All Going Be Done On A Reabuilt Motor Pined Ported And All, I Was Going Start With A 125shot And Move My Way Up To Like 150 175, And It Also Going Have A Racing Carb With Some Fue Going To It So It Wont Be That Lean, Wet Shot To, Rearend Is Going Be A Bitch Im Poping Them On A None Ported Motor, Tranes Going Give Out Soon So Both Are Going Changed Out Soon,

mar3

iTrader: (8)

Solid plan, lot of $$$...when you get the nitrous, get it as a kit...you MUST inject fuel with the nitrous with anything more than a 15 HP shot for a 12A with carb. Jetting the carb rich will only take you so far, that is not a plan for adding fuel for nitrous.

12akid

thank u mar3 ill look into that

1badFB

iTrader: (1)

I think he meant to say "wet" kit. What you really dont want is a dry kit.

Latin270

I really think 50 shot on a well built and tuned 12a is safe. I seen a few 12a's w/50 shot, no problem and spoke w/ a few 13b owners at the Pan Ams that run 75+ shot on naturally aspirated motors.

2wankel

iTrader: (1)

In Puerto Rico they are hitting hard with Nitrous.

12akid

thank u thank u we got a lot of pr runing realy hard at the 1/8 with nos, 11s with spary

perfect_circle

MISINFORMATION!!!! MISINFORMATION!!!!a

RotoBst

Hi guys, I just started playing with rotaries and I am seriously considering adding some juicey juice. I looked a few things up and here is a great site one of our members posted in another thread. Hope it helps Juice

Latin270

care to elaborate? :smiley_12

mar3

iTrader: (8)

PC runs a 250 shot dry system on his stock 13B, so he knows we've been lyin' to the kid...