Intercooler Water Spray

[Guest INASNT]

does any 1 know how to setup a intercooler water spray which would be setup with a pressure sensor so that when a certain psi is read on the manifold it would activate the spray.

It would work in the same way as a fuel pressure regulator.

What nozzles would any1 recommend to be used and how to have it all wired up.

[two40]

interesteting denham.

how does the water spray work anyway? i mean where does it spray it and all the rest of it?

[Doctor]

Are you looking at water spray water injection. Both very different.

If its water injection I suggest you get a NOS fogger, 3 NOS brass injectors (.25, .30 & .35 for tuning the thing), a decent pump that can pump water at a high pressure, an adjustable pressure swith for low pressure 1-30psi should do it from Honeywell=$50, an incabin switch, wiring and tubing etc. You can even put a bit of alcohol in the water 50% of each normally does the trick(help the water to atomise)

Set the water injection to come on about 3-5psi before full boost. This will elliminate any chance of major detonation at high boost by cooling the charge and making the air more dense. MAKE SURE YOU NEVER RUN OUT OF WATER WHILST RUNNING AT HIGH BOOST.

If it is intercooler water spray you are better of having the water come on when the car is stationary so the water combats heat soak and also to continue the spray upto about 60kmh so that the air travelling into the core hits the water and cools the cooler.

Hope this helps,

Doc

[Guest INASNT]

i am thinking on installing water spray for the intercooler not water spray into the intake system!

the main aim being to cool the intercooler down when running high boost.

Doctor

It would b better to have the spray running when the car is moving and has air flow going through it so the water would spray through the core and in a uniform manner!

Any idea how to wire it all up?

ONARUN

it would work just like the windscreen washer but spray water on the intercooler!

[Doctor]

You could use a temperature switch, so when the intercooler reaches a certain degree it triggers off the the spray or a pressure switch to come on at certain boost would do the trick. You can use some garden nozzle sprayers which are like $2 each and a window washer pump and bottle.

Very cheap mod.

Doc

[ex-static]

INASNT,

Im looking into doing this very soon, maybe even this weekend if I get off my ass

I thought about it, and after reading Autospeeds article on Effective Water Spray, I realised that its pointless to have the water spraying on a certain amount of boost, because by that time, your thrash/drag/race has gone and the warmer air has already passed through the engine, and you'll use all your water pointlessly.

The way im going to set it up is when I press it it sprays, so basically if I know im gonna have a bit of a play, i'll give the cooler a squirt, and off I go.. using the wiper system most likely. This would be the cheapest and most effectiveeasiest way to set it up.

I was going to set it up with a Temp Sensor, but again, this probably wouldnt work to well, because the cooler heats up alot more when sitting still idling, and it cant guess when youre going to want to give it some stick.. and it will drain all your water very quickly because it will squirt alot of water at certain temps.. which would usually be at idle.

Just go down to your local garden shop, and get some mist sprinkler ends.. and a bit of tubing.. maybe a few other things..

I might even do a write up of how to do it when I get round to it.

[Guest INASNT]

ex-static

good points man!!

u cold still have a temp sensor to activate the pump but have the whole thing connected to a on/off switch so when just driving around even if the intercooler gets hot the system wont spray, also have a manual button switch which u could use to activate the spray bypassing the temp sensor!

I have 2 nozzles infront of me which we use for inlet fogging systems for our gas turbines we design at work but they run at 3000psi pressure and usually run off passive pump skids. Dont know if a normal pump could push water through at a great enough pressure coz they have a filter and bleed system to let the water out if there isent enough pressure applied!

[ex-static]

Yea you dont need a high pressure spray, I rekon go the 30c Garden bits.. or steal soem from your neighbours yard.. haha j/k

What you have to remeber is, the only time the cooler will really get hot is on idle I beleive, as driving around will probably keep it relativley cool. What we want to do is make it cooler at its already coldest point. Maybe I might hook up a temp guage to my cooler pipe to see when its at its hottest, then after I hook up the water spray, see what works more effectively with just a manual switch.

Then add all the fancy stuff you said a little later.

[Guest INASNT]

check this out

http://www.aus300zxclub.com/tech/icspray1.htm

u need a preety high pressure nozzle with sprays like a mist of water on the cooler to help heat transfer, a nozzle like from the windscreen washer sprays 2 much water!

[ex-static]

Yea it has to be a pretty fine mist.. not like a jet or a squirt.. and it has to be reasonably even..

Thats not a bad write-up

I might print it out for this weekend

Ive booked in my mate to give me a hand on saturday morning..

[Guest INASNT]

me and grim will be having a go at it this week hopefully 2!!

[ex-static]

ahha.. awesome.. I'll also gap my plugs, and a few other goodies on the same day should be fun

[turbomad]

I've used the 2nd windscreen washer pump(rear window) and plumbed 2 garden mist spray nozzles into it with a check valve that I got at the local Holden dealer(stops water from syphoning out). It's triggered by a Hobbs pressure switch at 7psi and I also have a manual ON button in the cabin.

The sprays are mounted as far in front of the cooler as I could, right behind the number plate.

After a few foorays into boost the cooler is literally soaked to touch, so it would serve no purpose in having the pump come on whilst stopped at a red light, coz soon as you take off there is plenty of water there to see you threw to your next journey into boost.

[Cubes]

Worked damn well ...

[ex-static]

turbomad, its almost pointless having spray come on at boost.. see my previous post.

I thought about it, and after reading Autospeeds article on Effective Water Spray, I realised that its pointless to have the water spraying on a certain amount of boost, because by that time, your thrash/drag/race has gone and the warmer air has already passed through the engine, and you'll use all your water pointlessly.

Your only really on boost for about 15secs.. so it would be more beneficial for the water spary to come on just before you hit boost.

[turbomad]

Yes, just before boost, how? To estimate beforehand when your going to be on boost and manually turn it on is annoying, to have it come on while the car isn't moving is pointless, to hook it up on a full throttle switch is the same as having it come on in boost, a temp sensored switch on point will see you dump all your water at the traffic lights, perhaps having it come on at 1psi might be better than my current 7psi, but at normal acceleration at only a few psi you don't need it.

If your real keen buy the Autospeed intelligent waterspray controller, it uses boost, temp, injector duty cycle among other things to control the switch on/off point.

[uLa32]

i got that water spray thing happening. did you notice those two brass nozzles just underneath my number plate INASNT? for now its only a manual sprayer but will eventually go to a full auto system in the future. go to the autospeed site and find that article about the 'intelligent water spray' or something like that. i just followed that, got those nozzles, and the water pump from holden and just went to the wreckers and found a water container that fit just right.

water pump: $40

nozzles: ~ $30 each

some hose to hook it up: $5

switch for manual operation: $5

water container: $10

more denser air for you turbo: priceless

if we have a meet or something soon, i can show it to ya, and the nozzles have got a fine mist spray too.

[Guest INASNT]

Originally posted by uLa32

i got that water spray thing happening. did you notice those two brass nozzles just underneath my number plate INASNT? for now its only a manual sprayer but will eventually go to a full auto system in the future. go to the autospeed site and find that article about the 'intelligent water spray' or something like that. i just followed that, got those nozzles, and the water pump from holden and just went to the wreckers and found a water container that fit just right.

water pump: $40

nozzles: ~ $30 each

some hose to hook it up: $5

switch for manual operation: $5

water container: $10

more denser air for you turbo: priceless  

if we have a meet or something soon, i can show it to ya, and the nozzles have got a fine mist spray too.

yeah i have seen your in operation man and read the article about the auto waterspray!! that circuit is like $170 bucks tho!

r u planning to buy that circuit or make 1 yourself?

[uLa32]

i dont really know if i should buy it... the water spray thingie really is only effective on hot summer days AND also when your moving...or else it just gets hot. i guess its peace of mind knowing that you can lower the temp on those hot days, and also for small inefficient coolers.

autospeed also have a pressure switch and jaycar have some other things too...make look into it when summer starts coming around. dont really need it for winter

[Guest INASNT]

Originally posted by uLa32

i dont really know if i should buy it... the water spray thingie really is only effective on hot summer days AND also when your moving...or else it just gets hot. i guess its peace of mind knowing that you can lower the temp on those hot days, and also for small inefficient coolers.

autospeed  also have a pressure switch and jaycar have some other things too...make look into it when summer starts coming around. dont really need it for winter

dont know about summer man, i wanna run more boost without having detonation!!!