[s-cars] Subaru Intercooler question - Add a fan?

[Taka Mizutani]

Yes, the STi does have a water sprayer for the intercooler. However in stock
form it is an external spray, which is of limited use.

I would actually convert to an internal water injection setup, that will
yield a much greater intake temp drop.

Also, as I said in another post, the water tank is pretty small- only 2 or 3
liters, the Spec-C giant tank will be much more useful for trackdays, esp.
if you implement the full Spec-C setup that automatically sprays according
to injector duty cycle (IIRC). With factory electronics and a conversion to
water injection, you can have a really sano setup.

Taka


On 7/12/06, Steve Powers <sbpowers at gmail.com> wrote:
>
> The STI already has a water squirter for the intercooler. (my
> brother's STI does)
>
> Steve Powers
>
> On 7/11/06, lebakken1 at netzero.com <lebakken1 at netzero.com> wrote:
> > Chris writes:
> > <<<<<<<<<<<<<<<<
> > Friend of mine owns an STI, he's contemplating adding
> > some sort of fan to blow through his intercooler in an
> > attempt to lower intake temps.
> >
> >
> > Questions are:
> >
> >
> > 1. would this actually lower intake temps during stop n go driving?
> >
> >
> > 2. Are there any good fans that are 6 1/2 in diamter max?
> > >>>>>>>>>>>>>>>>
> >
> > Chuckle. (A polite ROTFLMAO in my own mind). Oh make it stop.
> >
> > Only because of your impeccable taste in Scirocco's Chris, do I know you
> are not contemplating this "mod" for your own purposes.
> >
> > Enough of the BS. To the questions!
> >
> > 1. Yes. For a specific ambient temperature, these intake temperatures
> would likely be lower than any of the other, nearby turbocharged cars going
> nowhere in that same traffic jam. This, however, would be primarily limited
> to the "stop" part of stop-n-go driving equation, and also at
> old-man-with-a-walker type velocities. When actually in the "go" part of
> stop-n-go, i.e., speeds above - say - 30mph, said intake temperatures
> would likely rise above the other turbo cars due to the mondo restriction
> that has been "engineered" into the air flow path for the intercooler. This,
> unfortunately, is when cooling of the charge air is most desireable. When
> the engine is under load. When you are actually going somewhere. Maybe even
> in a hurry. A more useful "intercooler cooling tool" - say that five times
> fast - would be to tap off the windshield washer nozzles with a switched
> solenoid valve to give the intercooler a quick bath. This would increase
> conductivity, in addition to the latent thermal gains to evaporation, and
> could be done during the go part and before the stop part. This could also
> be done with an old windex bottle in one of the cup holders if one was so
> Mcgyvered.
> >
> >
> > Must.....stop......now. This.....is.....hurting.....my.....brain......
> >
> >
> > 2.) With reference to the above.....WHY?
> >
> >
> > Should your friend decide this is a worthwhile endeavor, I will donate
> the thermocouples in order to help quantify the results.
> >
> >
> > Regards,
> >
> >
> > Craig Lebakken
> > 94S4
> >
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