For those that tow and use water, what size nozzle did you end up installing?

Do you use one of the progressive controls and if you do, what did you set for the flow curve?

Anyone use multiple small nozzles instead of one larger nozzle?

 

I run two .380's with the Coolingmist controller. I found that seems to be the best combo for me. Started with one .760, tried two 760s, A .760/.380 combo. Decided to stay with two .380's for best atomization with a single pump. Any more than that used too much water for too little gain.

 

I have a snow stage 3. It is progressive using three nozzles: a 175, 380 and 625. (Just going off of the top of my head, could be off a little)

The flow can either be egt controlled or boost controlled. There is a low boost setting that flows only the small nozzle and I ususally set this to start at 8psi and progressive to 100% at 16 psi. The "power" stage is where all three nozzles come in at 25psi. You can set it lower or up to 40psi.

I prefer the egt control as it comes on just when I need it; with the boost control, it tends to go through a lot of water and even with the 7 gal tank I have to refill every couple of hundred miles. On egt control, I go a pretty long time between fill ups.

That boost system though is designed to run in order to help with mpgs. Set it to come on at low boost when cruising and you are supposed to gain mpg provided you are running about a 35-45% meth/water mix. I saw about 1mpg gain but decided the cost of the meth and the pain of the frequent refill wasn't worth the mpg gain. So I use mostly straight water for cooling and it is good for that.

 

I just ordered a new Vari-cool II kit and it came with a 380 and 760 (cc/m) nozzles equal to 6 and 12 gallon an hour and I told them I wanted smaller nozzles as it would be more for towing. I asked for a 180 and 380.

I also purchased a boost switch and a solenoid. Here is my plan.

Set the vari-cool to control the 380 from 11 to 25 psi boost (0 to 100% duty), set the switch at 25 psi to operated the solenoid to open and flow to the second nozzle. My plan was the second nozzle would be the 180.

Also if EGT got over 1300 at any boost level it would run the duty to 100%.

I have an 18 gallon tank in the bed and will use water only.

I am installing this in an S&B intake elbow that is tapped for 5 nozzles. To maintain the best atomization. I may get 3 180 nozzles, 2 plumbed into the vari-cool and one controlled by the switch.

Do you think am I over complicating this?

 

Maybe. I'm pretty sure the primary factor in effectiveness is matching the pump capacity to the amount of water you want to flow for the purpose of good atomization. Regardless of how much you you inject it is probably doing more harm than good if it is not well atomized. Atomized may not even be the correct terminology, but finely misted is what's needed. I remember when I installed a 2nd 760 seeing the water consumption literally double while showing only a marginal if any EGT/power effect.

I think if you're already spraying in a tow mode and need a 3rd stage for EGT control you are probably either pushing it too hard or just not set up right in the first place. W/M is an enhancement, not an EGT magic bullet.

 

I am actually looking for an mpg edge while towing flat with a little egt assistance when hitting a grade.

I am thinking several smaller nozzles are better then 1 big one for the application I want. Too bad you can not see inside the manifold while you run down the road.