chatch

I was weary at first but i think im gonna go with a NOS wet kit. Now the Summit sight says dont use it with an "aftermarket" chip becuase it may lead to detonation. Well, I have the G-Force ECU and now I'm wondering if I should think twice about getting this kit. Someone with some knowledge wanna help me?

Thanx alot in advance,
Matt

88 Turbo II- Jspec engine, Apexi dual N1, Bonez down pipe, Bonez race pipe, Jacobs Rotary Master, Energy Core wires, RB under drive pulley, Stainless Steel oil lines, Knightsports dual pulley, Bonez intake, Apexi blow off valve,G-Force ECU, Walboro fuel pump, Haltech Haltuner, Autometer boost guage, Greddy TT, Mazdatrix Short Shifter, KYB AGX's, Intrax springs, Enkei rpo2's, S5 tails, Border headlight cover, Jspec FTP, removed air pump, removed a/c.

Ryde _Or_Die

Well I have always been told not to use N2O if your timing is increased because it can lead to detonation. I know that the pros do it but I don't think its too safe for regular street guys.

chatch

Come on guys, 1 response? I wanna order this kit but I need to know if its gonna pop my motor.

chatch

Skippydog

Someone give a little advice. I would but i have never run n02 in my car.

scathcart

-Go for it. I wouldn't go over a 80 hp shot.
-Make sure the timing is NOT advanced at all by the ECU, or manually by the crank angle sensor. If you can, retard the timing 2-4 degrees whenever the nitrous is injected.
-Get a purge valve.
-DO NOT hit fuel cut with the NOS on (and it will create more boost too. Port your wastegate)
-make sure your fuel pump is running well, use an EGT or A/F monitor, and use the wet kit.
-I'd use a fuel pressure gauge. If your fuel pressure drops, and you're still injecting nitrous, you'll pop you motor.
-don't hit below 3000 rpms.
-wire everything correctly
use a Nitrous pressure gauge, and I'd recommend a bottle heater.

Basically, if you know what you're doing and take precautions, you'll be fine.
But I can't tell you if it'll pop your motor or not. I don't know the condition of your fuel system, or how well you can monitor engine vitals.

NITROUS IS "LIQUID AIR". IF YOU DON'T GIVE IT GAS AT THE SAME TIME, YOU'LL POP THE MOTOR.
If you need more help, just ask, I'll check back in...
Sean Cathcart

scathcart

C'mon dude, 2 mins between responses?
Give it some time.
Sean

danflex

Just curious guys but if you were doing that Nitrous boost would you want a fuel pump that pumped more gas?????? If NOS is liquid air.... the more fuel the better right??? Just wondering
Flex

scathcart

A wet system consists of two solenoids. One solenoid sends nitrous to the jets, the other sends fuel to the jets. This fuel comes from your fuel rails (usually). The nitrous to fuel ratio is tuned by jets; increasing the jet size increases the horsepower shot, and one size increase requires an increase in the other.
Your fuel PRESSURE stays the same during a nitrous shot, but your pump has to be able to move enough VOLUME. If there isn't enough volume, your pressure drops, and your fuel injectors send in less fuel than the ECU thinks they are, and the nitrous continues to be jetted in with less fuel. The motor WILL pop.
Fix? Install a FP gauge and watch it when you hit nitrous. If it starts to dip at all, Get Off the throttle!
Sean

go_speed_go

Here's some info:
https://www.rx7club.com/forum/showth...threadid=40805

chatch

Thanx alot guys im gonna order the kit with the guages, I was gonna get a purge valve anywayz and I think I'll rewire my pump at the same time. Oh and scatchcart that smiley was supposed to be in the post right above it, I forgot to put it in so I did it like that, and thanks for the help.

Matt

Angel Guard Racing Team

Don't go too high on NOS HP, just to be safe. Keep it under 75 HP. Timming should not be too advanced. I suggest to have the system sctivate by throtle position sensor at full throtle.

boostmotorsport

Being a narrow range TPS doesnt that meen that youll be spraying the second you touch the pedal?

scathcart

Yes.
It would be better to set up a microswitch for WOT operation, like available with the NOS systems.
Sean Cathcart

chatch

Yeah I was plannin on the microswitch setup.

boostmotorsport

How bout running it off a manual switch so you dont burn rubber off the line? Would that be considered a better setup?

chatch

It will be run to an "arming" switch which i will flip when I hit third gear. I wouldnt want it to an on/off button as there is already to much going on during a race and its 1 less thing to think about.

West TX RX-7

Just make sure your fuel pump is in good order and giving enough pressure at high RPM's. The gas solenoid will use gas from the same line as the rest of your motor so just make sure your fuel pump can keep up. As far as timing advance, i wouldn't worry about detonation. Just be sure and run a high octain fuel AND a good octane boost. A Basic racing fuel like 101 would work even better but it's kinda expensive. You can get aviation fuel for around 2.50 a gallon and i think it's around 100 octane but it's dry so you'll wanna add some MMO if you don't already. Rock on!!

As for the switch do what you want. Some ppl like TPS switches and other like a manual button. I like the button so I decide when and for how long to run it regardless of throttle position. Don't have it pushed down between gears = ) I've mounted them on my shifter and put the arming switch in the console on all my previous cars with N2O.

boostmotorsport

I am looking at the NX wet kit, and adding one more nozzle as it comes with only one. where exactly on the runners should I plumb it?

TheBigOne

not to be a smart *** but NOS is Nitros OXIDE. OXIDE meaning not compressable, doesn't burn, just takes up space to increase power by filling in space thus creating power due to the lessed space with the same fuel. kinda like putting a basket ball in a bucket then filling it with water

My Junx

you couldn't be more wrong! N2O certainly does provide ALOT of oxygen to the engine, and that extra oxygen needs more fuel and the two of them make MAD-CRAZY power in an instant. And N2O is a gas, at room temperature, which is compresed and stored as a liguid inside a bottle.

My Junx

oxide: n. Chem. Any binary compound of oxygen with another element or radical: Nitrous oxide

TheBigOne

It doesn't burn. because its not oxygen. but your right on the rest

nitrous oxide or nitrogen (I) oxide,chemical compound, N2O, a colorless gas with a sweetish taste and odor. Its density is 1.977 grams per liter at STP. It is soluble in water, alcohol, ether, and other solvents. Although it does not burn, it supports combustion since it decomposes into oxygen and nitrogen when heated. The gas is prepared commercially by the thermal decomposition of ammonium nitrate, NH4NO3, at about 240°C to produce nitrous oxide and water; the reaction must be carefully controlled to prevent explosive decomposition of the nitrous oxide. The gas is purified, liquified by compressing and cooling it, and stored in metal cylinders. A major use of nitrous oxide is in anesthesia, e.g., in dentistry. It is commonly called laughing gas since it produces euphoria and mirth when inhaled in small amounts. It is also used in making certain canned pressurized foods, e.g., instant whipped cream. Nitrous oxide was discovered (1772) by Joseph Priestley, who called it “diminished nitrous air”; he prepared it from “nitrous air” (nitric oxide, NO) by treatment with iron powder or a mixture of iron and sulfur powders. Its properties were further studied (1799) by Sir Humphry Davy.

TheBigOne

http://www.askjeeves.com/main/follow...1343&x=17&y=10

TheBigOne

my badd its oxygen