Has anyone done this?

I will be fitting a 12v water pump operated by a switch somewhere on the dash to a remote water tank in the boot. I've acquired all of the parts really cheaply and I’m going to be using 2 or 3 Mitsubishi mk.iv 'L200' headlamp washer jets as my sprayers as they give a real good spray/mist. Got all the parts for less than £30..... Quite a bit cheaper than the aquamist FMIC spray system.

Will post pics once I get round to doing it!!

This is something I was going to do on my previous esprit for the chargecooler rad.

You need as fine a mist as possible so it evaporates on the rad fins. Helps if the rad is ally too.

Cheers

This is something I was going to do on my previous esprit for the chargecooler rad.

You need as fine a mist as possible so it evaporates on the rad fins. Helps if the rad is ally too.

Cheers

Cheers for the advice. FMIC is the ProAlloy item Jabba sell.

Steve:thumbup:

TaviaRS has done it to his vRS. A long time ago

I also think it is quite popular on evo's and scoobys.

Once I've chargecooled the v8 I'm going to check the inlet temp and maybe fit it to that.

Does Vagcom etc allow you to check inlet temps??

If not I got a nifty little bit of kit from maplin to check it. Worth checking before and after though to see what difference it makes.

Cheers

Cheers

What everyone has said. This was OE on my last Scooby, run automatically (with a manual over-ride from the dash) based on inlet air temp. Think "mist" rather than spray onto IC fins.

If inlet temp can't be measured easily, can IC temp be measured instead?

why not fit WI?

why not fit WI?

It would cost a fair bit more than £30 :P

But be more effective.

Unless your charge temps are going stupidly high, then its unlikely to seriously affect your performance.

I did it mate - do a search for jaycar electronics in aussieland - they make a kit assembled or DIY soldering - mounts a temp probe in the IC fins and one for ambients - doesn't waste water at all.

Thing is that for a diesel it can't use the injector cycle to tap into- you have to put in either a microswitch to trigger on WOT or a relay that runs off boost (another kit they make). It's really fun DIY soldering and the kit costs peanuts compared to the assembled unit....

Works quite well - but drops temps by about 12 deg C which is a lot less than a Forge FMIC.....After I got my FMIC I stopped using the water spray even running at 47 deg C heat....

HTH

Bas

TaviaRS has done it to his vRS. A long time ago

Yes.. he did. said it was more effective than a larger FMIC.

Altho it did mean that he could empty his large capacity washer bottle in about 15 minutes when on a track

IIRC at least one of the WRC teams has done an external misting to intercooler. So there must be something in it, if your intercooler temperature is high enough.

IIRC at least one of the WRC teams has done an external misting to intercooler. So there must be something in it, if your intercooler temperature is high enough.

Anything that can help a rally car is going to help as they spend alot of time sideways

They run very high boost pressures which mean that air is very compressed which will have an affect on the intake temps, so anything to help is a must.

i believe most prefer WI though as this, although doesnt create power, it helps prevent you losing more than you would. The water doesnt compress and takes up space in the compression chamber, but does help keep the mixture cool.

It also helps prevent detonation.

I think you'll find the main effect of water injection is anti-detonation, unless the water is flashed off into vapour and remains such by the inlet temperature. If it does flash into vapour, it most assuredly will compress! This is fairly basic thermodynamics.

I did say it prevents detonation.

However, All of the WI kits i've used and had experience of have always taken up compression space in the chamber.

Its also a point to note that WI tends to be triggered either by inlet temps or boost pressure.

Steve did it as well and documented it with pictures here, using a washer jet.

I fitted a basic water spray onto mine and just connected off the rear washer pipe supply as i've de wipered it so the washer was redundant so i just ran the pipework to two subaru waterspray nozzles as they give a nice mist so if i want to use it i just push the wiper stalk back

I fitted a basic water spray onto mine and just connected off the rear washer pipe supply as i've de wipered it so the washer was redundant so i just ran the pipework to two subaru waterspray nozzles as they give a nice mist so if i want to use it i just push the wiper stalk back

Yeh but no but ....i did it first :P.