Jump to content
SAU Community

Recommended Posts

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.

Link to comment
https://www.sau.com.au/forums/topic/291117-watermeth-injection/
Share on other sites

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.

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?

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 ????

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.

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?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
    • So, now all you need to do is connect the 2 or 3x 12v feeds into the unit to permanent 12v, ACC 12V and IGN 12V that you can find in the spot behind the stereo, and the earth, and then it will switch on with the car.
×
×
  • Create New...