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Forum nameTurbo/Nitrous Tech
Topic subjectWater injection info: where to put injector?
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i8&topic_id=83666
83666, Water injection info: where to put injector?
Posted by lickscissors, Mar-13-05 07:01 AM
ive tried searching, and wasnt finding what i wanted....i know dsmtalk had a lot of good sites for water injection and they're currently down.... anyways, does anyone know the "good" water injection site? or know where should i put the injector? ive heard both before the intercooler, or after...and if after, how close to the throttle body? thanks
doug
83671, RE: Water injection info: where to put injector?
Posted by turbo8u, Mar-13-05 08:51 AM
i have mine drilled RIGHT after the intercooler. on the outlet itself actually by the coupler. you can also put it right before the throttle body. h20injection.com was a badass site, but i guess its not up anymore...:thumbsdown

aquamist.co.uk is a good site with lots of info as well
83676, RE: Water injection info: where to put injector?
Posted by lickscissors, Mar-13-05 12:10 PM
does it seem to work well right after the intercooler? or would it be better closer to the throttle body? i see benefits both ways, just which one is better? thanks
doug
83677, RE: Water injection info: where to put injector?
Posted by baxsom, Mar-13-05 12:32 PM
I just bought my kit from coolingmist yesterday and had a pretty long conversation with the tech on this exact subject
he suggested as close to the turbo outlet as possible
when i told him that i had an intercooler he said as close to the outlet as possible so the IC has a chance to do its job
basically you want the spray to hit the hottest possible air so it is completely vaporized (his words) right after the IC so you dont lose efficency

however (theres always a however isnt there)
if close to the TB is all you can do
it will still work you just wont get as fine of atomization of the h20


i am planning on installing it this coming weekend
i will post some pics of the install
83678, RE: Water injection info: where to put injector?
Posted by turbo8u, Mar-13-05 12:37 PM
Originally posted by baxsom
i am planning on installing it this coming weekend i will post some pics of the install


badass, you'll like it

83688, RE: Water injection info: where to put injector?
Posted by jimmy169, Mar-13-05 02:41 PM
Can u use windshield washer fluid (I may get shot down for this question, some say u can and some say thats crazy)?


Bit and owned by boost bug!
83689, RE: Water injection info: where to put injector?
Posted by turbo8u, Mar-13-05 02:44 PM
Originally posted by jimmy169
Can u use windshield washer fluid (I may get shot down for this question, some say u can and some say thats crazy)? Bit and owned by boost bug!


yea actually you can, its not as effective as what you're supposed to use though. windshield fluid has alcohol in it to keep it from freezing, so thats why it works.

83692, RE: Water injection info: where to put injector?
Posted by baxsom, Mar-13-05 03:09 PM
isnt plain distilled water the best way to go

83699, RE: Water injection info: where to put injector?
Posted by lickscissors, Mar-14-05 03:28 AM
i also got my kit from coolingmist...the guy was real helpful...he also said to put it before the intercooler so it has more time to atomize...i was checking out FAQ's on aquamist.co.uk...and i found this:

13. Where do I place the water jet?
Normally immediately after the intercooler unless the intercooler suffers from heat soaking such as the type that is fitted on top of the engine (Subaru, GTI-R, Toyota Celica and etc).

14. Surely if the jet is placed before the intercooler it will have better cooling effects?
Not quite true. If the air entering the intercooler is pre-cooled, the cooling efficiency of the intercooler will drop due to the smaller temperature differentials between the ambient air and induction air within the intercooler core. Secondly, there is also a possibility that the hot air from the turbo may cause unnecessary vaporisation of the injected water thus taking up precious volume that was intended for the charge air.

15. Should the water jet be facing the direction of the in-coming air? Two possible locations, if the jet is to be installed along an induction pipe, point it at 90 degrees to the direction of the air flow. Position the jet furthest away form the throttle body as this will enable better mixing and intercooling properties. If the jet is installed at the end-tank of the intercooler, point the jet in such a way that it has the greatest cavity to accommodate the 90 degree spray pattern.

i think im going to place mine after the intercooler.... i also wouldnt want any moisture sitting in the intercooler, even though there shouldnt be, but just incase....also, what mixture do you plan on using.... i also found this:


9. Why is Methanol better?
Methanol itself has a octane number of 113. Not only does it improve your fuel quality, it will also give you a better intercooling effect in the inlet tract.

10. What is the maximum alcohol/ water ratio I should use?
No more than 50%, otherwise you will increase the cylinder temperature rather than reducing it. Beyond that ratio, onset of detonation is more likely. Methanol freezes at -96 deg. C, 50% mixture will stop the mixture from freezing at around -40 deg

and then this:


Methanol in Petrol.
This is the best from the point of view of reducing Detonation, followed by Acetone and then Benzole in that order.
Methanol can be added in all proportions up to 100 percent, but as an additive limited to 10 percent will give an Octane increase of about 5 points. For example 98 Octane can be increased to 103, or looking at it another way, cheap fuel of say 91 Octane can, by the use of 10 percent Methanol, or approximately three quarters of a pint per gallon, will produce fuel of 96 Octane.

so what kind of ratio do you think? 50/50? thats what i thought but isnt this saying 10% methanol 90% water? what do you guys recomend...also, has anyone found a cheap place to get methanol?

oh, and i also thought that somebody didnt reccomend methanol? anyone know the reason why? thanks

doug