SSS2k

I have been considering spraying a 40 shot with a Zex wet kit on my S. Nitrous puddling concerns me. I am not totally clear on what causes it, but it would be my guess that this problem occurs more frequently with large amounts of nitrous injection. Can someone enlighten me? Will I be at risk with a 40 shot?

CRX 18

I am not an expert but will contribute my limited knowlege. When people talk about puddling with wet nitrous systems they are refering to fuel, not nitrous puddling in the intake runners leading to the engine. If this fuel sitting in the intake manifold were to catch fire it can cause trouble. Nitrous will be a gas as it travels through the intake runners, but fuel is a liquid and more likely to not all make it to the combustion chamber. Intake runners are designed to flow air not liquids. Different manifold designs do better at preventing this puddling than others. To prevent puddling nitrous makers have created nozzles that supposedly turn the fuel into a finer mist that will travel down the intake runners better. I have not heard of an S2000 with puddling problems but I don't know. There are people running wet kits (NX mostly) and people running dry kits (zex mostly). I have heard both success and horror stories with both types. No stories of fuel puddling though.

SSS2k

Anyone else?

s2000turbo

I used to have a dry system for more than a year on my N/A, 100 shots, with not problem, now I went turbo with a full forged engine, now I want to put a wet system with at least 100 shots......cheap power is not bad at all....lean condition with NOS is the problem, just install a rich/lean to check that....

s2000turbo

Also change spark plugs to iridium, other ones will melt and damage your engine

SSS2k

Yeah, I plan on running all the safety precautions, however I hear that the gas from a wet system is what puddles, not the nitrous, hence your worry free operation. Others?

jimknapp

SSS2k,

As long as you are not running the jug at idle with a stone cold motor you should be okay. Puddling occurs with low air flow and cold surfaces. If you set up your nozzles correctly the NoS will be spraying behind the gasolene. This massive temperature drop can cause the gasolene to have a difficult time staying atomized, but if you are only running it at full throttle it should not be a problem.

As to the manifold not being constructed to pass a wet mixture, as long as you've got the revs up (say 2000+) and the throttle open, I wouldn't worry about that either.

Keep smilin'

Jim

SSS2k

Still debating.

It seems to be that for such a small shot, 50, that my injectors should be more than ok in adding the extra fuel. It will be dyno tuned, and I am also having a fuel pressure safety switch installed, so I dont really worry about leaning out.

I think dry may be the better choice for me.

jimknapp

Wet/dry... your choice. But I will say something about NOS safety switches. I have five (5) things that have to be right before my NOS will hit:
1. The NOS bottle valve has to be turned on.
2. The engine must have oil pressure (low pressure safety switch #1)
3. The engine must have fuel pressure (low pressure safety switch #2)
4. The NOS on/off switch on the dash must be at the "On" position.
5. The throttle must be at full to activate the final link in the chain, the "full throttle " micro switch.

If you happen to shoot some NOS into the intake with the motor off and then happen to start the engine, you may find yourself "rewarded" with a deformed piece of sheet metal that used to be the front of your car.

On the other side of all this is the FUN of it. NOS is WAY cool!

Just be cautious and don't take shortcuts.

Jim

BlueS2000Boy

what plugs were you running with your 100 dry shot? exactly? and what set up were you using?