NA Nitrous?

[Jus10dun]

Has anyone done a big setup? i am looking to build the motor for a 150+ shot and wanted to who if anyone else has done it?

Also does anyone know piston clearences? timing retard?

thanx

justin

 

[supramacist]

The popular resolve for this debate is don't nos your N/A.

You'll shoot your eye out.

Unless you have rebuilt the engine to handle such a thing and even then it's tempting fate. IMO.

 

[BorHor]

I might run some since we have a kit with a full bottle at the shop..

 

[gofastgeorge]

I have been toying with the idea.
Pleanty of room on the runners to do 6 soft plume nozzels.
I already have aftermarket rods & pistons in it.

 

[DegreE]

Go for it, just remember tuning is key and be sure to retard the ignition timing -2 degrees for every 50shot increment.

Do not use platinum spark plugs, use copper, 2 steps colder than stock. NGK's are best. But I also herd Venom makes spark plugs now and people have had great success with them on the Cobalt forums.

Use a wet kit, and make sure your fuel system is working properly and building plenty of pressure.



Those are the basic guidelines that I've been going by in all my previous cars that I have sprayed before in teh past (2 2g NA Eclipses, 1 EF Civic Hatch, 2 s13 240sx's). Currently spraying my GF's Cobalt SS 2.4L N/A for about year now and is holding it like a fucking champ! Gotta love GM.

 

[gofastgeorge]

Thanks for the timing advice.......
I can do that with my S-ITC from the dash.

 

[supramacist]

Welp...., If ya built the bottom end, then ya.
Go for it.

 

[Jus10dun]

Now.. if i only change the pistons.. how much power can the bottom end hold?

I am playing with the idea of a Wet direct port set up.

With the timing do you know of any timing retard boxes that will wiring in to our system?

With the stock head bolts and gasket is the nitrous going to provide too much combustion to handle? Just like the boosted guys? Or do i need APR bolts and Copper gaskets?

 

[Jus10dun]

Does Apexi have a tuner that i can use?

 

[Fuzz420]

I wouldnt go more than a 50-75 shot on stock hg.

As far as tuning i would use the maft pro. It can trigger nitrous and with the timing harness you can retard timing while spraying.

Personally i wouldnt spray on a stock hg motor. I blew a head gasket with out nitrous.On the other hand i would spray a MHG and stock piston and proper tuning device motor

 

[gaboonviper85]

these are supras not Honda preludes....we don't use copper we use steel headgaskets....and yes your headgasket will need to be changed...

Nitrous isn't cheap and easy power like the typical ricer thinks....it will blow a motor quicker than two shakes of a jackrabbits ass if don't do it perfect and have a motor built for it...you will want stainless exhaust valves also if you plan on huge power....spray is some scary shit if not done well....

If you plan on doing it right then you may as well go turbo cause it will cost you about the same in the long run.

 

[supramacist]

YA..., Just run a sneak squirt and keep it on the DL.

 

[labrat469]

Remember guys nitrous is like a hot chick with an STD. You know you want to hit it but you're afraid of the consequences.

 

[DegreE]

I suggest if you don't have nitrous, DON'T POST IN THIS FUCKING THREAD UNLESS YOU'RE ASKING A QUESTION.

 

[DegreE]

Thanks for the timing advice.......
I can do that with my S-ITC from the dash.

Grab a timing light and play with the dizzy.

 

[DegreE]

Does Apexi have a tuner that i can use?

You can use a SAFC, then get it on the dyno and have them tune it for you.

 

[DegreE]

With the stock head bolts and gasket is the nitrous going to provide too much combustion to handle? Just like the boosted guys? Or do i need APR bolts and Copper gaskets?

I would go with a MHG and APR studs.

If you plan on keeping it N/A, you can port and polish the head, gasketmatch the intake manifold, get a headder and full 2.1/4 exhaust.

 

[labrat469]

The problem with N20 is that it will find the weakest part in you motor and blow it out of the block. It should be one of the last things you put on you motor. I would not suggest adding it until you have built your motor to handle it. A system may cost around 500 USD but all of the other parts you will need is what will really cost the most.

Expect your motor to run hotter when spraying because nitrous is an oxidizer. Aluminum and steel cool and heat up at different rates and will shred a stock head gasket over time. The aluminum head will also heat and cool at different rates in different areas. Which as we know is one of the reasons why heads warp. So let's not forget the cooling system. I would suggest a lower temperature thermostat and a larger radiator.

You also might want to look into running with extra oil and an oil filter relocation kit with an oil cooler to combat viscosity break down when the oil gets really hot.

Too many people think they can throw on a kit with a 100+ shot and be just like F&F. Click....PHSSSSSTT....BOOOOOOOOM!!!!

Well I'm off to work. Like I said before "Remember guys nitrous is like a hot chick with an STD. You know you want to hit it but you're afraid of the consequences."

 

[AJ'S 88NA]

these are supras not Honda preludes....we don't use copper we use steel headgaskets....and yes your headgasket will need to be changed...

Nitrous isn't cheap and easy power like the typical ricer thinks....it will blow a motor quicker than two shakes of a jackrabbits ass if don't do it perfect and have a motor built for it...you will want stainless exhaust valves also if you plan on huge power....spray is some scary shit if not done well....

If you plan on doing it right then you may as well go turbo cause it will cost you about the same in the long run.

There are a few that have used copper HG. I believe you have to o-ring for a good seal, in fact I have one you want it?

 

[Jus10dun]

I know that i need lots of other components to make the motor realible. I really don't know a lot about supras i bought the car a couple years ago as a DD. i am more into V8s but smaller motors are soo much more effiecent in their power. But the only way to get that power is forced induction. Now the one thing that a lot of guys out there arn't doinig is nitrous because they don't know how it works. I just started 5 months ago working at a Nitrous shop and we do Mostly Big blocks and Small block Fords. Although V8s are a lil more forgiving do to the fact these motors are built.

So..... to sum it up if i were to proceed with this project with only pistons head bolts and studs the valves couldn't take the heat, the rods and crank can't take the power?

Arn't most of these turbo guys running 350hp dd with these stock bottom ends?