DYI water injection

D

denny

Active member
I made a water injection setup for my Ty. Did most of what's on this page http://www.turbomirage.com/water3.html . It was very easy and cost me about $60 . I used my old shurflow intercooler pump (2088) good for 45psi, only had to buy a pressue switch ($20) and solenold ($35), nozzle was about $3 each. Everything else I had lying around in my garage. I even have a led to show when it's on.

I first use one nozzle, the one listed on the above page, 10 GPH which is about 600 cc/m @ 45 psi. This was good at 15 psi boost but not good for 10psi. At 10 psi it would stumble. I now have 2 3.16GPH or 200cc/m at 45 psi nozzle. I haven't tested it out yet or do any datamaster run. I think it should run ok, will find out soon.

It seem too easy, I am wondering if other syty folks done this
If works ok, I would upgrade the pump maybe shurflow 100psi and aquamist nozzle .


Denny nyc
92 ty 13.0 @ 106
 
S

Sy769

Donating Member
Yeah Iv'e bench tested mine but not installed it. I've got a regulator to set the pressure and a solenoid to turn it on and off. Hopefully someday I'll put it on.
 
Daron

Daron

Active member
Re: DYI water injection

Denny,
If you narrow up your plug gaps, you can run more alky. You can also mix it with some water to make the mix a bit easier to ignite.
 
turbodog

turbodog

Donating Member
Interesting. What other mods do you have on your truck, Denny? I looked at the mirage site. The only thing that is not perfectly clear.... I assume the hobbes switch is plumbed into the intake to trigger the injection at a specific boost level. I take it you are turning it on at 10PSI? Or, plan to with the new smaller nozzle?

I don't have a Shurflow sitting around... but I do have a perfectly good stock fuel pump. (I can see the flames [pun intended] coming already, but...) if I can find a suitable reservoir that I can get the fuel pump into and secured, think it will work? A SyTy fuel pump must be good to at least 60PSI, right?
 
S

smeagol

Active member
I had all the parts to do this, based on results & data I've seen posted on turbobuick.com

The guys having the best results run high pressure with staged, multiple jets. I wouldn't plan on running just one jet. I'd try to run 2-4 jets, and if you want 22-24psi, run 2 stages. The idea is that you are flowing a good amount of water/alky at high boost, but you don't need all of it at lower boost, say a 12-15psi turn on point. So the jets come on in stages - 1 or 2 at 10-15psi, then a secondary stage of 1 or 2 jets at 18-20psi. Otherwise you will flood out the spark etc, with a lot of water at low boost.

Take note of the jet sizes & pumps that people are using. Even the guys at the Saab place in KC that sell Aquamist will tell you that a single Aquamist pump isn't ideal for most of our applications and that several jets with a larger pump, like a Shurflo, would work best probably.

Good atomization, with the correct amounts of water/alcohol (which is up to debate & opinion). These are the keys to a well designed & tuned setup.
 
S

smeagol

Active member
turbodog said:
Interesting. What other mods do you have on your truck, Denny? I looked at the mirage site. The only thing that is not perfectly clear.... I assume the hobbes switch is plumbed into the intake to trigger the injection at a specific boost level. I take it you are turning it on at 10PSI? Or, plan to with the new smaller nozzle?

I don't have a Shurflow sitting around... but I do have a perfectly good stock fuel pump. (I can see the flames [pun intended] coming already, but...) if I can find a suitable reservoir that I can get the fuel pump into and secured, think it will work? A SyTy fuel pump must be good to at least 60PSI, right?
Click to expand...

Problem is that it won't live pumping alcohol ... pure water...not sure.
 
turbodog

turbodog

Donating Member
Hmmm... taking my fuel pump- based system a step further... what if I use a turbo-engine fuel pressure regulator to vary the alky pressure with boost level?

BTW, I have a mostly stock Ty. I see on the GN links that they say alky injection is a good thing on stock GNs as well as modded ones. True for SyTys as well?

Oh, yeah... and Denny, where did you mount your injector nozzle?

Just noodling.... at least for now....
 
D

denny

Active member
I looked at a few other dyi pages and make my own setup. The pressure switch I got from Clarks http://www.clarksol.com/html/prodspecsPressSwitch.htm . It was like $17 , its adj from 2 to 10 psi, i should have got the 6 - 30 psi adj.

My wireing is simple , the pressure switch kick (ground) on a relay which turn on the pump and open the solenoid. The master switch is between the ground and the pressure switch.

I mount the nozzle on my intake pipe, I have an air to air intercooler, the intake pipes are mild steel, I am planning to change them to aluminium, so I didnt mine drilling holes on them.

I dont have pic, but i you want i can snap a few. It's kinda getto looking.

Its easy to run multi stages, add different nozzle to come on at different boost level, just need more pressure switches and solenoids.

Denny
92 ty 13.0 @ 106
 
turbodog

turbodog

Donating Member
Denny, thanks for the answers. Think I 'get the picture', so no need to shoot pics unless others want to see them. let us know how it runs with the smaller nozzle. Who runs alky with the stock intercooler? where do you put the injector(s)? Thanks.
 
BigAl...

BigAl...

Member
guys, I spoke with Mark Larson at the nats and he mentioned that the most important thing to remember when shooting alky (or whatever antidetonant you decide to use) is to cut back on the fuel when using alky.

I think he's got this alky thing figured out. If I'm not mistaken he's had the best results with alky. Maybe he can chime in and shed some light.

BigAl...
 
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