NOS....wet or dry for 85 TPI??

[mike 1985]

I want to spray the car this summer and was wanting to go with a dry kit for simplicity. Anyone ever had bad luck with a dry kit ?

What is the hp ratings i could use with a dry kit?

Or is wet definatly the way to go?


thanks

Mike

 

[supernatural400]

Dry is certainly easier.
how many miles on the motor ?
any lower end or top end work done .?

 

[mike 1985]

the car has 132,000 on it, but the compession test and plugs are good.

I'll go dry then. Can anybody tell me what pill size makes what HP on a dry kit and a wet kit?

Thanks.

I'll start low and work my way up

 

[supernatural400]

Well to be honest ,I personally would not put NOS on a motor with that many miles on it.
But the kits for dry have jet sizes 75,100,125,150 etc these are the shot or horsepower ratings

So a kit that has a 100 shot jet will give you approx 100 HP

Here'a some additional info for you


Wet System
A wet nitrous system is a plate or nozzle-type system that mixes nitrous oxide, and a corresponding amount of fuel together atomizing the mixture into the intake tract.

BENEFITS:


Can be tuned by jet selection to deliver greater quantities of fuel and nitrous, which leads to greater power. Easy to upgrade.
Nozzle over each cylinder. Allows tuning individual cylinders for power.
Once again, this kit can be tuned. You can add jets to add more power to your car, whereas the Dry System cannot be upgraded.

--------------------------------------------------------------------------------

Dry System
Dry nitrous systems inject nitrous by itself through the intake tract in such a quantity that the vehicle's own engine management system is able to compensate for the additional oxygen and reduced inlet temperature with a rich proportion of fuel (stock computer either adds more fuel or leans the mixture out when the nitrous is injected). Additionally, the nitrous travels a longer distance as it moves through the intake manifold, creating additional power by reducing the temperature of the rest of the incoming air.

BENEFITS:


Ease of installation. Doesn't involve the complication of tapping the manifold and intake runners for nozzles or plumbing hard line from the block to those nozzles.
Most don't require fuel system upgrades.
Power levels will not compromise the longevity of motors that are in good condition.
Safer than the wet system because additional fuel is supplied by the injectors, governed by the stock ECU, relative to air density or mass as it is altered during the nitrous boost. Nitrous is not mixed with fuel at the intake tract (nitrous itself is not flammable or explosive until mixed with fuel).
Many systems do not necessitate a change in spark plug heat range.
Vast majority are designed to work with OE engine management control.

 

[mike 1985]

thanks

i'm going to start small and limit it to 100 HP. Do you have a orifice listing for the different jet HP sizes.

Like a 100 hP jet is 32...for example. that's what i'm looking for.

 

[supernatural400]

No, Most kits NOS,NXpress, TNT come with 100 shot jets. You would have to contact whatever manufacturer you going to go with for those numbers

 

[mike 1985]

ok
thanks

 

[vms4evr]

Check these guys out for a dry kit. They have an LT1 version. Not sure what they could do for the 85. Looks interesting though...

www.zex.com

graham

 

[mike 1985]

thanks

 

[Vettelt193]

with that kind of miles, you will be pushing the envelope on your engine. A 100 shot will expose any flaw in your engine, and little problems will become big ones quick. A huge problem with nitros is it is usually either all on or all off. One option that could save your engine is a variable controller, to engage it more smoothly, so your engine doesn't get such a shock.

 

[mike 1985]

i have the hit figured out with a custom design. We put a dry kit on my friends 94 Camaro and it can still hook on street tires with a 75 hp pill.

I plan to start small as the vette has 132,000 on it. The dry limit is 75 HP and wet probably 100.

Thanks for the advice

 

[Vettelt193]

glad you have some experience... good luck with it, and have FUN!!!

 

[Steve92LT1]

I personally prefer wet over dry, but thats me. I think it is much better to inject the fuel with the nitrous instead of "forcing" the injectors to provide the additional fuel needed. I don't like the way dry works, much easier to lean out, and if you have injector probs, that could kill your motor on the spray. LEAN is BAD when spraying.

I have plenty of nitrous experience, and have run a 150 hp wet shot on my 5.0 mustang plenty of times. It's a fresh motor though. Gonna up it to 175 soon. I ran 125 wet on the stock 130K mile motor with no probs. (Those motors have forged pistons though, which can be more tolerant of screwe ups. I've never had one though. L98 has cast pistons I beleive.) I'm running a custom fogger setup with the fogger directly ported into the intake manifold.

Make sure your engine is running "perfect" before you spray, and run copper spark plugs. I like NGK. Don't run your timing too far advanced, run 93 octane fuel and keep the motor running cool. Tendency to ping on a hotter motor.

I would never spray my vette though, but thats me. Don't fear the spray!

Good Luck!
Steve