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Water/meth Injection

Don Dada

By Don Dada,
in Forced Induction Performance

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Don Dada Mentor

Don Dada

Posted
Posted

Hi guys need a little help.

I'm about to install a WMI kit on my RB26 and would like to know from those who have done it, and i guess also from those who have good reasoning, where is the bestest location for the nozzle???

Its basically the stock piping with the oem recirculating valves, but i would like to place the nozzle probably mid way in the original rubber hose which is about 4" away from the intake chamber, but i am concerned that this might be too close for even distribution across cylinders.

My concern is that i want to get at least water/meth as possible in the intake piping so when the bovs open, there would be a minimal amount of water/meth being blown back into the compressor hence no damage to the wheels.

My other option would be on the pipe that exits the cooler before the bovs,but again there would more spray back into the compressors.

Your thoughts.

Thanks.

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tridentt150v Grand Master

tridentt150v

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Drill and tap into the alloy pipe approx. 50-100mm before the throttle body. My instructions say as close as possible to the TB, but I put it back to 75mm to allow a bit better swirl mix before it goes to the cylinders. Works for a Gtst anyway.

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CameronBNR32 Proficient

CameronBNR32

Posted
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both of you guys have rb25 (single throttle body) so its abit easier on placement choice, rb26 = itb(6)

smell how were you going to place it into the rubber pipe? make/buy an hard inlet pipe with a fitting?

Would it damage the compressor blades? it would circulate back into the inlet pipes of the turbo and turn into vapour?

I've ordered a kit from the states and was thinking of installing it into the pipe few inches past the exit of the intercooler in the inner guard, or just before the plenum intake, the pipe in the engine bay but I have made all my piping out of alloy, so installing will just require a bung welded in.

how many nozzles did you get aswell? could place them in multiple positions?

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Don Dada Mentor

Don Dada

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I see we are in the same boat!!!

The water can cause damage to the compressor blades over time thats why most manufactures do not recommend u put the nozzle before the compressor.

I am only going to use one nozzle but there are guys here that have used two, usually one before the cooler to aid with the cooler efficiency and one after.The problem with this though is water can puddle in the cooler,.... but again i can only go on what i have heard.... or read.

Come on guys, what do u recommend for the 26 ????

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bradsm87 Proficient

bradsm87

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Nozzle before the cooler is stupid. U want to keep the air hot before the intercooler so the intercooler actually has something to do. The hotter the air, the more heat the intercooler can remove. In theory, just after the intercooler is best but the insides of the piping get droplets of water everywhere. In practice, the best place is about 100mm before the beginning of the plenum (where the throttle body would be if it had a single). DO NOT mount on the plenum or it'll have extremely uneven cylinder distribution.

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tridentt150v Grand Master

tridentt150v

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Yeah, but the theory is the same.......

both of you guys have rb25 (single throttle body) so its abit easier on placement choice, rb26 = itb(6)

smell how were you going to place it into the rubber pipe? make/buy an hard inlet pipe with a fitting?

Would it damage the compressor blades? it would circulate back into the inlet pipes of the turbo and turn into vapour?

I've ordered a kit from the states and was thinking of installing it into the pipe few inches past the exit of the intercooler in the inner guard, or just before the plenum intake, the pipe in the engine bay but I have made all my piping out of alloy, so installing will just require a bung welded in.

how many nozzles did you get aswell? could place them in multiple positions?

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bradsm87 Proficient

bradsm87

Posted
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I thought i made it clear. IN THE COLD PIPE BEFORE THE PLENUM.

Any earlier and it'll just hit the cooler piping walls and any later (like IN the plenum) will have uneven cylinder distribution.

IN THE COLD PIPE BEFORE THE PLENUM

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