water/meth injection

[wentbig]

I have a procharger on my 6L 2500HD. I bought a kit, where is the best place to spray my water/meth?????
The only thing I have to go by is somewhere after the intercooler.

[Justin_Inc]

I always set them up to spray about 6" from the throttle body.

[Quicksilverado]

Before the throttle body and after the MAF.

[xx_ED_xx]

On the supercharged vipers we put them right before the throttle bodies

[wentbig]

I have the plastic ducting from Procharger, it is clamped with a short rubber hose to the TB. Do you think I should drill and place the injector in the plastic duct?

[Boosted-Z71]

Stay away from the IAT sensor also. I spray both before & after the supercharger, If you place the nozzle on the vacuum side, you will need a solenoid to prevent the engine vacuum from siphoning your water/mix.

Boosted

[wentbig]

What?

[wentbig]

Anywhere before the t-body will have vacume. I wonder if I am the first one to put meth inj. on a procharged truck

[Justin_Inc]

no, i guarantee you are not the first. install it before the throttle body, but after a MAF or IAC sensor. You wont have any issues. And IMHO I would tap into the plastic pipe you were talking about.

[wentbig]

Thanks Justin_Inc, I am going out to do just that.

[wentbig]

Just got in the house I have 6 hours in the install. Just have to flush and wire a switch inside the cab. I don't like the injector in the plastic duct.
I tapped it and screwed it in with silicon, pretty hoakey.

[Landchipper]

Before the throttle body and after the MAF.

This was the key for mine.

[chevy4.3]

Spray your meth/water after the s/c or turbo. Theres no reason to spray in front, thats just stupid. Somewhat near the throttle body or plenum.

Your IAT sensor needs to be in the intake piping/plenum after your water/meth injector. This is so the pcm reads actual temp as the water cools the intake charge from the s/c or turbo. If you have a MAF/IAT integrated unit, buy an s10 IAT and install that using the IAT brown/black wires from your MAF

[Quicksilverado]

[QUOTE=chevy4.3;4598652]Spray your meth/water after the s/c or turbo. Theres no reason to spray in front, thats just stupid.

You may want to do a little research. Spraying before compressing the air will yield the greatest increase in power. Not many people do it however.

[chevy4.3]

[QUOTE=chevy4.3;4598652]Spray your meth/water after the s/c or turbo. Theres no reason to spray in front, thats just stupid.

You may want to do a little research. Spraying before compressing the air will yield the greatest increase in power. Not many people do it however.

It might increase power through mixing better somehow with the air, but water in mechanical/turbine parts = no good

[Quicksilverado]

[QUOTE=Quicksilverado;4599677]

It might increase power through mixing better somehow with the air, but water in mechanical/turbine parts = no good

Methanol will flash into a gas and does not harm the blades of a sc or tc. Small amounts of water can also be introduced with no harmful side effects as long as the pressure is high enough from the pump and the nozzle is the right type to atomize the water.

[chevy4.3]

[QUOTE=chevy4.3;4599850]

Methanol will flash into a gas and does not harm the blades of a sc or tc. Small amounts of water can also be introduced with no harmful side effects as long as the pressure is high enough from the pump and the nozzle is the right type to atomize the water.

I do agree with the idea that it would mix with the intake charge, but I can't see how it's any more efficient or helpful than to mix it on the backside of the s/c where the air is actually hot.

Heat from the turbine isn't going to kill a good quality s/c or turbo

...btw this idea is null if he has an intercooler. Spray before the plenum or throttle body and no where else

[wentbig]

The Procharger compressor is not hot enough to flash the meth/water mix to a gas. the mix is corosive to the soft metal housing of the compressor.
I am spraying with the big nozzel from a AEM kit I may split off another line and spray with 2 nozzels.

[chevy4.3]

the mix is corosive to the soft metal housing of the compressor.

x 2

[Quicksilverado]

[QUOTE=Quicksilverado;4599896]

I do agree with the idea that it would mix with the intake charge, but I can't see how it's any more efficient or helpful than to mix it on the backside of the s/c where the air is actually hot.

Heat from the turbine isn't going to kill a good quality s/c or turbo

...btw this idea is null if he has an intercooler. Spray before the plenum or throttle body and no where else

The cooler the air the more dense it is. If the air is cooler before it is compressed you can stuff more air into the engine. The military did studies during WWII on air craft. More hp meant the difference between life or death. The test showed the most power when cooling the air before it was compressed. GN guys have done this for years. Some turbo diesels use this technique also.

[wentbig]

Any you guys spray multible nozzels? 2, 3 or more?

[wentbig]

If I sprayed before that big 3 row cooler would'nt the meth just go to the bottom of the intracooler and sit there?

[chevy4.3]

[QUOTE=chevy4.3;4599919]

The cooler the air the more dense it is. If the air is cooler before it is compressed you can stuff more air into the engine. The military did studies during WWII on air craft. More hp meant the difference between life or death. The test showed the most power when cooling the air before it was compressed. GN guys have done this for years. Some turbo diesels use this technique also.

See man, I understand what youre saying it just doesnt make sense. A supercharger is already sucking cool air. This is like saying put an intercooler before the s/c..:banghead:

This idea could work for a turbo, but then I'd have to be wondering if it's really worth it spraying water into the turbine. When the heat from the exhaust obviously isn't hurting the turbo, and the only thing that needs to be cooled is the charge entering the engine, the air's already compressed as hell...it's boost

[chevy4.3]

Any you guys spray multible nozzels? 2, 3 or more?

multiple jets are for setting spray at different boost pressures. The first comes on at 5-6, the second at 10+ lbs or something similar

Now there are progressive controllers so theres no reason to have multiple nozzles anymore

[Quicksilverado]

Look at IATs on a cold day. They are in the 50-60 degree range. Methanol flashes at 54f. Water can be atomized if the pressure is high enough and the correct nozzles are used. In the summer IATs are normally in the 90-120 range, if you can drop that temp to 50-60 degrees before compressing the air, the I/C won't have to reduce the air from 150-200. If you want even greater benefit, Spray water pre tc/sc and methanol after. A friend does this and can see IATs 20-30 below ambient.
Most kits are designed to spray all nozzles at once.