Want to spray my 420a

[freeride6772]

Hey, I have a 98 5-speed gs and have glanced through all the 420a Nitrous forums and got some very valuble information, Gsgoinfast helped me out alot from what I was reading of his.
I would like to effectively run a 75 shot wet nitrous set up. I have herd that you really dont need to make any fuel upgrades, but I am affraid of running a lean mixture. I would like to know what other mods I need in order to make it relatively reliable.

Also I am planning to rebuild my motor this summer before I do the nitrous, ( I am burning some oil) do you think I should go with some forged pistons and high end connecting rods, or would the 75 shot not require a modification of that caliber. should I just get some new pistons and rings that are like the ones I have now?

Thanks for the help in advenced.

 

[MelloEclipse]

I personally find Nitrous too risky...but if you are going with it...i'd say go with the higher end internals just because that's alot of stress on the 420a.

And if you're worried about running lean and things of the sort...find a way to monitor it...get a datalogger, or just A/F gauges to check up with. Just make sure you break in your rebuild before you go shooting up with nitrous. best of luck.

 

[freeride6772]

Thanks man, so why do people think that it is risky? Just wondering what could go wrong. All the topics that I have resterched say that if I run a 75 shot it wont really do anything wrong, but I could be wrong.

 

[meliketoball]

I say 420a Turbo'd! If you're going witha rebuild and stronger internals, then I say up the valve train also and boost the hell out of it.

 

[Shadow98]

it's risky IMO because of the complications that could occur SHOULD something go wrong. Nitrous isn't ALL bad, but it is less reliable than say a turbo...

meliketoball told you to turbo your 420a. I COULD be another one of the 4g63 guys who scream NOOO don't turbo your 420a that's dumb and you should just get a gst or a gsx...but i'm not going to....instead i'm going to say if you decide to do that.....best of luck to you, , because you are in for a hell of a time and money.

Please don't listen to this guy. You can easily and safely run 8 psi of boost on your stock motor. There are many of us 420a-turbo guys on these forums and 2gnt.com if you ever need help with the install. However, if you want to go all juice and no turbo the least you can do is upgrade your fuel pump http://www.extremepsi.com/store/customer/product.php?productid=16273&cat=430&page=1
To get more answers on 420a related questios, post in the 420a section, otherwise you might get confusing answers, since the other person may or may not be relating to the 4g63.

 

[luvmygst]

I have used N2o alot. Dont listen to the people that say nitrous is horrible most have never even used it. When used correctly its a great way to make power. I would upgrade the fuel pump because when spraying you are supplying the n2o nozzle as well as the injectors. Go with good internals, aka forged pistons and some good rods. Arp head studs. Set up right you could spray 150. Nitrous does basically the same thing a turbo does, it puts more oxygen into the cylinder and the fuel to burn it and you get more power. Just a tip on starting out do alot of research first. When you try it the first time go with a bigger fuel jet to be on the safe side. (if you use a 75 n2o jet use a 100 fuel jet) then go from there. IF you have any questions just pm me. good luck

 

[VelocitàPaola]

I would like to effectively run a 75 shot wet nitrous set up.

But...

I have herd that you really dont need to make any fuel upgrades, but I am affraid of running a lean mixture.

WTF


Do you know what makes a "wet kit" a wet kit? Wet kits inject additional fuel to compensate for the high potency oxidizer (N2O). Wet kits are, of course, opposed to dry kits, which inject N2O, and only N2O.

So... even though you say you don't want to do any fuel upgrades, wet kits, by virtue of their nature, require you to modify the fuel system somewhat.

You're pretty much stuck with a wet kit too: I wouldn't run a dry kit any larger than a 50 shot. If you're careful, I'd say the 75 shot will be just fine with the stock internals. However, while you have everything torn apart, you might as well upgrade (if you have the money), if you ever intend on further modifying your car for power.

 

[MelloEclipse]

i'm not saying that nitrous is horrible...i'll quote dsmtuners...

The fastest and easiest way to bolt on big power. It's also the fastest and easiest way to destroy your engine if you don't know what you're doing. Read up on nitrous systems before considering one.

that's all...there's nothing wrong with doing it..IF you know what you're doing...if not...it's risky and you can really mess things up.

 

[freeride6772]

Wow thank you guys alot for all the help! I really apprediate it.

From that I think I have decided what I will do. I will purchase a 75 shot wet kit and upgrade my fuel pump along with my internals, not sure with what because it is expensive.

If i get forged pistons do you think that I would be ok with the existing connecting rods?

I herd someone say something about head studs. I wasnt thinking about doing anything with the heads, but maybe I should, Is it necessary??

 

[MelloEclipse]

you should be ok with the rods...but anything that you can upgrade to a more durable type, it always helps to be safe.

 

[Blitzeclips]

With nitrous, it's alot about the condition of the motor prior to installing the kit. Any imperfections become magnified under that stress.

Nitrous is in fact, safe and easy horsepower. Though, only if done right. This should be my sig because I say this all the time, do it right once and you'll save yourself alot of time, and money in the long run.

 

[BigRand]

I'm just curious, what brand of nitrous are you planning on going with....its been a while since I've looked at nitrous kits, but from what I remember zex seemed to be pretty safe because of the whole computer box thing they've got going to help with safety features.

IMO, if you add any type of forced induction to a car that didn't come with, you always upgrade the fuel pump, espcecially if its only going to cost $100

 

[Gs Dewd]

Well I'm running n2o and turbo. Nitrous is indeed safe as long as you install the kit right and don't run a shot that your engine can't handle. I am running a NX efi stage 1 kit set for a 75 shot While boosting 17 psi from a 16g. I know I have a 4g63 but mine has basicaly stock internals and holds up real well. Your can too just be sensible with the shot you use (don't go over a 75 shot on stock internals) and triple check your install to make sure everythong is installed correctly. Also do upgrade your fuel pump it's cheap insurance. A $100 is far cheaper then leaning out and burning a hole in a piston.

 

[freeride6772]

I'm just curious, what brand of nitrous are you planning on going with....its been a while since I've looked at nitrous kits, but from what I remember zex seemed to be pretty safe because of the whole computer box thing they've got going to help with safety features.

Yea I think that I will do with ZEX, what I was reading about them seems pretty convincing and I also like the computer box thing too.

I was also thinking and this is what I am planning on doing the new fuel pump and the new forged pistons and rings. If anyone else has any other suggestions regarding good nitrous kits fuel pumps etc etc that would be really helpfull and thanks again.

 

[Slo2gen]

I run a 75 shot on mine and I haven't had any problems out of it yet! I have the Nitrous Daves kit, it the old NX solenoid design and comes with the NX stamp on the jets for the kit. It has anywhere from a 35 to a 200 shot and I only paid 450 for the kit plus a full 10lbs bottle. I would deffinately upgrade the fuel pump and maybe to a fuel pump rewire but other than that there is really nothing to it. Like stated before, make sure the car has good compression and has -1 range colder plugs (NGKBKR7E) and a new fuel filter and plug wires and your good to go.

 

[Locke]

Wet kits inject additional fuel to compensate for the high potency oxidizer (NO2). Wet kits are, of course, opposed to dry kits, which inject NO2, and only NO2.

NO2 is Nitrogen Dioxide. N2O is Nitrous Oxide. Don't worry, that little slip-up can stay between you and me, and nobody will have to know.

 

[VelocitàPaola]

NO2 is Nitrogen Dioxide. N2O is Nitrous Oxide. Don't worry, that little slip-up can stay between you and me, and nobody will have to know.

I don't know what you're talking about... WTF

I didn't just go through organic for nothing, I just type fast...

 

[SurrealDSM]

i apologize if im taking this thread over in any way but ive got a nos fogger kit *75 shot* would it still be logical to replace the fuel pump? ive been on these forums up and down doing my research before even considering install


i didnt wanna start another thread if one reguarding spraying a 420a if one was up already

 

[Slo2gen]

You don't have to but it is a good insurance.

 

[BigRand]

i apologize if im taking this thread over in any way but ive got a nos fogger kit *75 shot* would it still be logical to replace the fuel pump? ive been on these forums up and down doing my research before even considering install


i didnt wanna start another thread if one reguarding spraying a 420a if one was up already

Yeah man, for something so simple and thats only $100, it goes a long way in saving yourself from a freak misshap.

Not to mention the install on the fuel pump really is an easy job for a first time tuner (incase anyone is wondering) just follow a haynes or chiltons manual, and you should be finished in an hour or less.

 

[Slippi84]

I know everyone frowns upon spraying a dry kit above 50 shot but I just made a trade and picked up a kit and was gonna try and a 75 dry shot. I have a walbro 255hp and could pick up a fmu off ebay. Do you this with those two I would be cool with stock 420a internals. I was going to make a turbo kit but I think I can reach my goals for my dd/quick street car w/o getting to crazy with my custom turbo kit and all that.

 

[VelocitàPaola]

I know everyone frowns upon spraying a dry kit above 50 shot but I just made a trade and picked up a kit and was gonna try and a 75 dry shot. I have a walbro 255hp and could pick up a fmu off ebay. Do you this with those two I would be cool with stock 420a internals. I was going to make a turbo kit but I think I can reach my goals for my dd/quick street car w/o getting to crazy with my custom turbo kit and all that.

No... there won't be any way to introduce extra fuel into the mix when you spray. The FMU will only react to boost pressure, not nitrous injection.

Most people forget that you need both air AND fuel to make power. They neglect the fuel, and ramp up the air by either slapping on a big turbo or injecting a large shot of nitrous. If the A/F ratio doesn't remain consistent, and extra fuel isn't added as well, you'll only damage engine parts.

 

[Slippi84]

No... there won't be any way to introduce extra fuel into the mix when you spray. The FMU will only react to boost pressure, not nitrous injection.

Most people forget that you need both air AND fuel to make power. They neglect the fuel, and ramp up the air by either slapping on a big turbo or injecting a large shot of nitrous. If the A/F ratio doesn't remain consistent, and extra fuel isn't added as well, you'll only damage engine parts.

A dry nitrous system hooks up to avacume line instead of a fuel line and raises fuel pressureto accomidate for the extra air/nitrous. Your right about people neglecting fuel and just adding a power adder but I figure a walbro 255 and if not a fmu a adjustable fpr is hardly neglect. Some 4g63 guys with boost don't even do that much.

 

[VelocitàPaola]

I misunderstood you, I thought you wanted to use the FMU to bump up fuel pressure while spraying.