Water injection

[rocket468]

I am happy you like our controller. We get our pumps thru surflo. I think we are the only alky kit company that can buy direct thru shurflo. It took alot of doing. I think we usta buy thur them before i came along.


Our controller is pwm based unlike others. Thats why snows for example comes in the heatsink for a case. It builds up alot of heat pulling voltage out of the circuit. We just took a differnt route than others with controlling the pump. Ours pulses full voltage to the pump. Instead of reducting voltage to the pump. We are worken on making ours alittle more sutable for nitrous solnoid use. I have a feeling alot of people would not mind a 100 dollar progressive nitrous controller.


The fittings we use are simlar to Legris brand but these are more easly removable. With the legris once they are on you have to yank pretty hard to get your hose out. I personal don't consider the legris brand reusable because you tear them up a good portion of the time getting the hose out. If you look at a pic on my site. If you push down on the blue portion of the fitting it will relase the hose. Thats why we choose these over legris brand.

blown353 comments are on the money with hooking it up. The only thing is i recomend using the check valve we include verses a solnoid. Its elec item and at some point it may fail either off or on. Checkvavles hardly go bad but are not 100% 0 leak.

Good to see yet another vendor (Devil's Own) is also using the Northen Tool/Shurflo pump... and better yet starting with the higher pressure unit.

I like their controller. My unit from Julio works good but the turn on and initial adjustments are in a box seperate from the main controller; the Devils Own box has everything convieniently located on the main controller.

It's best to adjust the pressure switches on the pump to whatever your lines and fittings will accomodate safely. I have my switch adjusted to cut the pump at 140 psi, as my fittings and hose are rated to 200psi. My pump pegged a 300psi gauge shortly before blowing up the hose when I totally bypassed the pressure switch-- so don't crank it up too high or bypass it entirely!

The usage of quick-connect "Legris" connectors and high pressure tubing instead of the more commonly used rubber hose and barb fittings seems eerily similar to my setup. I used nylon line and legris connectors on my car well over 2 years ago for all my vacuum lines and water injection system, and at that time I hadn't seen any other setup on the market or DIY-setup using the stuff. Not ragging on the kit at all at all (actually, it's a compliment)-- the plastic lines and legris connectors are clean looking, simple, reliable, and trick. Very easy to connect and disconnect.

Y-Try, no pitfalls to a carb application. I first built my DIY system back when I had the carb; back then it was a 2-stage pressure switch and solenoid controlled setup. The nozzles were in the carb hat. I've now gone to a progressive controller and like it much better; much more control of the spray and a much more consistant spray.

As far as nozzle placement, ideally you want it early in the intake system so the water "lingers" in the intake charge long enough for the water to vaporize and absorb heat from the intake charge. My nozzles are located just after the supercharger discharge. It's also simpler to locate the nozzles prior to the intake, as if you put the nozzles in the intake (exposing them to vacuum) you'll need to add solenoids to the lines to prevent engine vacuum from sucking the tank dry during cruise conditions. If you put the nozzles before the carb/throttle body they won't see vacuum and thus you eliminate the need for solenoids.



Another thing I suggest is you add a pre-pump filter; should you get some junk in the tank it will keep the pump clean and also keep you from having to remove and clean sediment off the filters on the mister nozzles.

One last tip: mount the water tank above the pump to gravity-feed the pump, but install the nozzles higher than the water tank... otherwise there is the possibility that the system can gravity feed with the engine off, dumping water into the intake, and possibly hydrolocking the engine the next time you start it.

Troy