What would I need to drill this nozzle to then to achieve the 500cc mark at 20psi? Do they make drill bits that tiny?

 

Just under 1mm, like .9 mm or so should get you there. I bought a set of tiny drill bits that go from like .35 mm to 1 mm and I gradually went up in size by hand drilling it. Takes awhile because you have to be very careful not to break the bit off inside the nozzle.

 

Hey Brent...Do you have a pic or link to that thin wall adapter?

 

Where did you find these bits? I've called the local Sears and other places and they seem 1/16 is the smallest they have, I know Ill need at least a 1/32 (.7938mm)..I figured the deflection would make up for the rest or get me close enough...appreciate the help!

 

No need to drill. The SUE25A has a .040” orifice. Thats 1.016mm.

 

I ordered them online somewhere, don't remember where I just searched.

 

If/When you get it you should test it out!

 

I did some more research and called around...this is the website we need to be getting our flow numbers from

http://s7d5.scene7.com/s7ondemand/br...SSCo&el=normal

As for nozzle flow rates, I tested mine, and it turns out it flows exactly what it should, for some reason I ordered the 1/8J+SUE18B combination....with that nozzle it's only supposed to put out 2gph...which is only 126cc.

After looking at the SUE25A...If we are to assume we're going to have 20psi of liquid pressure, it looks like it'll flow 12.3gph and that rate is independent from the air pressure... it would flow about 775cc/min...

SUE25B or SUE28B both will supply around 580cc at 20psi, assuming water pressure is also at 20psi

 

im trying to find some good quality, decently priced nozzels that arent so big and fugly. Any ideas or links

 

Unless you get a nozzle that just utilizes water and would most likely require a pump, you wont be finding anything much smaller or of quality.

I'd be more worried about function than looks at this point.

 

Yea thats basically my understanding as of now.

 

Good find! Thank you

Looking at the tables of the higher flowing nozzles, it looks though they require higher pressure to atomize properly. For instance, for the SUE25A, in the 20 psi liquid column you mentioned, the minimum air pressure is 40 psi. The SUE28B looks like more capable at lower air pressure, but still the minimum air pressure is 30 psi.

The SUE18 still looks like the best one in the 300 ccm range. It meets the minimum air pressure requirement in the 10-20 psi range of operation, and flows between 4.2 and 6.0 gph in that range, @ 258-379 ccm


- Sandro

 

The sue18 is what I got originally and it didn't flow 379 cc at 20 psi. It flowed more like 200cc . I went by those charts for the first couple nozzles I purchased and they just didn't work out the same in my testing.

The atomization still seems fine with the larger nozzles, obviously we can't run 30 or 40 psi air with 20 psi liquid. The liquid and air pressures will be equal and dependent on the turbo outlet pressures. But we aren't painting the car either, we are injecting water into the turbo. The more water you inject the less atomizing that can be achieved. The main thing is keeping large droplets from hitting the turbo blades to minimize the chances of pitting or erosion. I feel the larger nozzles still provide a nice balance between droplet size and keeping the engine happy with plenty of water especially if you plan on pushing more then 15 psi into the engine.

My first nozzle after being drilled out flowed more then double what it originally flowed, but the water was still a nice mist floating off into the air. This same nozzle has been on the car for over a year now and I have no signs of turbo blade erosion.

 

Ill def be sending mine in since I got the wrong one and get the SUE18, Ill do another flow test on it to be sure it's kosher and then it's time to rock and roll! I just hope it's not back-ordered or something

 

Where did all the pictures go?

 

I guess too many people looked at them this month, and my photobucket ran out of bandwidth

 

right click the 'bandwidth exceed' pic and choose open image in new tab (this is in FF)

 

I can get some pics up as well if needed, I tested the nozzle and it indeed is a little overrated...my 380cc nozzle ended up flowing about 300cc...I am hunting down a mini drill bit set and then I should be good to roll.

 

I'm about to do a TII swap and it seems that WI is a good idea regardless of the boost. However, since the stock turbo maxes out around 8lbs, do you think that this system would work well at these lower pressures?

 

You can only benefit from it at this point as you've stated, your only issue will be to make sure you can find a nozzle that will atomize efficiently with 8psi. I posted up a catalog with all of the nozzles and flow rates earlier I believe.

 

Looks like the SUE18 is still the best one.

 

Na the sue18 doesn't flow enough for real power. Not unless it's modified. 500-550cc at 20 psi is what I recommend and has shown good results in the systems I've done.

 

I just bought some drill bits to perform this process, and I'm wondering how exactly you drilled this and what it looks like after the process is finished...is it possible to get a picture of the tip?

 

I'm considering installing a mechanical WI system as well. There is some great information in this thread.

The only thing I may do differently, is removing the solinoid from the system, and making it completely mechanical. Positive pressure = positive flow. Has anybody else considered this?

The only real downside is the extra water consumption when the car is between 0-8psi. With my driving style and small turbo, when I'm in boost I'm already at 1 bar. There isn't much "in between" or wasted water. But even so, a little water never hurt anything. The less wires in the engine bay, the better.

So, instead of this:



We have this...



Am I missing anything here?

-R4tw

 

I'm thinking (but unsure) that without the solenoid in the water line, the water could easily gravity feed, or even be sucked in without being in boost. There's nothing to stop the water from leaking into the nozzle...