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Water injection????? 

 

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 Post subject: Re: Water injection?????
Posted: Fri Aug 21, 2009 11:42 pm 
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TROYMAN wrote:
hey joe?
would you be nice anough to post a few pics of where your water jets are positioned and water tank is mounted??


Will do when I get a chance Troyman. Here's one showing the jets.
Attachment:
File comment: WI Jets
Image175.jpg
Image175.jpg [ 29.92 KiB | Viewed 59 times ]


Its a bit crude but works quite well. Only problem is there is quite a bit of tube between the solenoid (mounted above passenger headlight) and the 2nd (post supercharger) jet. It doesn't get water pressure as quickly as the intake jet. I have another solenoid which will fix this. I'll mount it just before the 2nd jet so that water is pressurised and ready to go.

Tank is mounted inside driver's side guard.

Joe

 

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 Post subject: Re: Water injection?????
Posted: Sat Aug 22, 2009 1:02 am 
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thanks joe
im looking at doing this aswell.. i was just thinking of places to mount everything. :)

im just not sure wether to mount the jet nozzle before the supercharger or i was thinking about mounting it in the bottom of the throttle body (where the old engine breather use to be?)
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 Post subject: Re: Water injection?????
Posted: Sat Aug 22, 2009 1:49 am 
Getting Side Ways
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Do the EPA freak out about this stuff? they can get really pissy about what comes out of the back pipe

 

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 Post subject: Re: Water injection?????
Posted: Sat Aug 22, 2009 9:30 am 
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fiftyone wrote:
Do the EPA freak out about this stuff? they can get really pissy about what comes out of the back pipe


from what ive read it can actually reduce emissions..so i gues that can be a good thing..
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 Post subject: Re: Water injection?????
Posted: Sat Aug 22, 2009 1:21 pm 
Getting Side Ways
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fiftyone wrote:
Do the EPA freak out about this stuff? they can get really pissy about what comes out of the back pipe

It's water. The emissions from heating water are...?... And anything which creates a more efficient burn would result in better emission readings, as Troyman suggests.
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 Post subject: Re: Water injection?????
Posted: Sat Aug 22, 2009 3:19 pm 
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TROYMAN wrote:
thanks joe
im looking at doing this aswell.. i was just thinking of places to mount everything. :)

im just not sure wether to mount the jet nozzle before the supercharger or i was thinking about mounting it in the bottom of the throttle body (where the old engine breather use to be?)


The guys who know more about it recommend the pre-throttle jet be placed about 10inches before the TB. This is so that the water mixes well with the intake air before it reaches the intake manifold and splits into the runners. I'd agree with this...I'd hate to have bulk water reaching some runners and not others, causing some cylinders to lean. Placing the jet a while before ensures it goes exactly where the air does. Its preferable to avoid lots of bends too (straight flow better for mixing), so you wouldn't put it immediately after the supercharger.

If you want to reduce your intake temps place a small jet before the supercharger. This pulled about 20-25 degrees out of my intake air temps on boost.

If you want to beat detonation, or advance timing, lean afr's or add boost, and the first measure doesn't do the job, then a jet just before TB is more effective.

I found with just the pre-supercharger jet in, if I took the post supercharger pipework off immediately after activating water, that it was only moist for around 100mm after the supercharger. I think by taking the heat out of the charger and intake air, that its good work was done, and little 'useable' water was making it to the engine. This is what made me think that the 2nd pre-throttle jet might help with the det I was getting (which it did). Many others have also found this setup the best (pre and post supercharger jets).

In terms of part placement, I have water bottle inside driver's guard, pump in there also (tight fit for big pump!), tube running inside front bumper, fridge filter in front of radiator, tube to solenoid, solenoid above passenger healight, little T piece, M2 jet in intake pipe, and M3 jet in post supercharger pipe.

If you do it, make sure you tune for it (and that your tuner will do this), or you'll be another person saying it doesn't work! I reckon its works amazingly well....it was over 30 degrees at lunch today and I could drive on boost with air con on, extra passenger + gear, and engine happy. Different story 3 weeks ago!

Joe

 

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 Post subject: Re: Water injection?????
Posted: Sun Aug 23, 2009 3:28 am 
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Not to piss all over the previous posts about the EPA, but thats s**t and conjecture until i see print outs and such.

I do believe it would assist in a better burn when set up correct but I think mr. plod would like a second opinion as to the precise law on that

 

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 Post subject: Re: Water injection?????
Posted: Thu Aug 27, 2009 6:48 pm 
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Nice setup there dude!

BTW Fiend, i thought it was the olds jetfire of 1962 or there abouts that had the turbo setup & needed the special water in it?

Cheers

ToranaGuy

 

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