Water to air Intercoolers

[thegreatestben]

I've mounted the ST205 intercooler itself in my car,
Just wanting to sort the pump and the exhanger now.

I've got the ST205 exchanger but its just too damn big. Is it possible to get this shortened? It'd be perfect if it was just a little narrower.

Other than that does anyone have anything that'd be suitable or can suggest something? Needs to have 3/4" hose fittings, preferably on the same end.
Ideal measurements would be 500mm wide x 300mm tall x 1.5" - 2" thick

Pump I'm gonna get a marine pump and see how that lasts, frozenboost.com sell them and say although they aren't designed for this purpose, they survive and perform quite well. They also seem to manage with coolant in the system.

[deaf_rattle]

i think most people run the exchanger and pump from the w2a i/c legacies.

usually plenty at pick a part.

[Norton]

I use the Bosch Cobra pump from Frozen Boost. Specifically designed for W2A kits. Lasts heaps longer then a marine bilge/bait pump. Nice high quality pump.

[thegreatestben]

i think most people run the exchanger and pump from the w2a i/c legacies.

usually plenty at pick a part.

No good, actually removed the suby system which was already in place cos i personally think they are crap. the suby system uses 5/8" lines where the celica uses a healthy 3/4"

And buying from frozen boost just isn't an option, I'd be looking at close to $300 just for the pump, If I was gonna spend a bit I'd get a davies craig pump like this or this

[strx7]

And buying from frozen boost just isn't an option, I'd be looking at close to $300 just for the pump, If I was gonna spend a bit I'd get a davies craig pump

At the end of the day, you get what you pay for, pay peanuts expect monkey results. Fork out some $$$ and get the results to go with it

[Mr Revhead]

there's nothing at all wrong with the subaru system
granted my setup wasnt as powerful as yours will be but i think the subaru rad will be more than upto the job. dont forget that theres quite a lot of capacity in the system (about 6l in mine) so it will take a hell of a lot for it to get hot.

you dont want the water to move through the i/c too fast so you dont want huge volume pipes and mega pumps. you have to allow time for the heat to transfer

i could thrash mine around the backroads on a stinking hot nelson day and the air intake manifold would still be cool to the touch.

maybe look at getting 3/4 fittings on the subaru rad. I also used redline water wetter in mine.

[Adoom]

And buying from frozen boost just isn't an option, I'd be looking at close to $300 just for the pump, If I was gonna spend a bit I'd get a davies craig pump

At the end of the day, you get what you pay for, pay peanuts expect monkey results. Fork out some $$$ and get the results to go with it

I can get A MONKEY for peanuts!?!?!!!!! AWESOME! I'm just off to pakn'save to buy some peanuts now! Gonna get me a monkey!

[thegreatestben]

And buying from frozen boost just isn't an option, I'd be looking at close to $300 just for the pump, If I was gonna spend a bit I'd get a davies craig pump

At the end of the day, you get what you pay for, pay peanuts expect monkey results. Fork out some $$$ and get the results to go with it

Yeah I'm not opposed to spending money, but spending money overseas is just rediculous with the exchange rate atm.

Suby ftl
Toyota ftw.

[levinguy]

im keen for an ideal solution to this as well! i have a subaru radiator with my aw11 setup atm, no way the 205 rad would fit between the rails.

all the motorbike rads that i could find were far smaller then the subaru setup, although quite a bit thicker.

alot of people in the uk seem to be running astra radiators for their w2a, this could be something to look into?

let me know if you do come up with something better anyway!

[thegreatestben]

What model Astra?
I'm gonna go see a friend who works for a radiator place tomorrow I think

[sergei]

I am using subaru exchanger in my ST165, I have yet to see it getting hot.
I also use 2 pumps, (subaru+165), mainly due to I don't trust discarded pumps that I replaced brushes and bearing.
I use ST205 intercooler with that setup.

[XS1V]

Im running Subaru pre rad and pump with ST205 I/C in my ST185 rally car and it works well. Will swap pre rads with you if you want though

Brad

[bbq1988]

ive been looking into putting a wta system into my car, and am looking at using 2x 25 row oil coolers + 7" Fans to cool the water, maybe that would be worth looking into?

there are some from silverdale radiators for $150, 25row, 330x200mm

[thegreatestben]

Im running Subaru pre rad and pump with ST205 I/C in my ST185 rally car and it works well. Will swap pre rads with you if you want though

Brad

Haha If I can't do anything with the ST205 unit I will be selling it. I chopped off two of the mounts but two are still there. I still have the subaru unit If I get desperate.

[Stealer Of Souls]

minor hijacking...

Is there really such thing as pumping water too fast?
Isn't it the old differential temperatures thing?
Without fully thinking it through (half my problem I guess) it's like people stating that a cup of water cools faster if it's boiled first... Which is partially true.. But if you measure time to reach a particular temp then it's wrong... Or am I missing yet more basic physics on energy...

[Mr Revhead]

my understanding is that the cooling effect is caused by heat transfer
if the water is flowing too fast it doesnt have the time to absorb as much heat as it would if it was flowing slower.

however in thinking about it, faster flow may mean the water absorbs less, but more is flowing by so maybe it balances out....

if thats the case then flow rate isnt really that critical, as long as the water doesnt get past its most efficiant cooling temp

end of the day, i still think there is nothing wrong with the subaru pumps and rad!
imo the pumps rep for failing is due to where its mounted in stock applications, ie more heat. maybe.

[sergei]

my understanding is that the cooling effect is caused by heat transfer
if the water is flowing too fast it doesnt have the time to absorb as much heat as it would if it was flowing slower.

however in thinking about it, faster flow may mean the water absorbs less, but more is flowing by so maybe it balances out....

if thats the case then flow rate isnt really that critical, as long as the water doesnt get past its most efficiant cooling temp

end of the day, i still think there is nothing wrong with the subaru pumps and rad!
imo the pumps rep for failing is due to where its mounted in stock applications, ie more heat. maybe.

Pumps fail because bearings wear out loading motor further and burning out brushes.
I have revived a few pumps with new bearings and modified chinese drill brushes.
All of faulty ones I had, where seized due to bearing failure.

BTW ST165 and subaru pumps are exactly same units apart from plug.

[Stealer Of Souls]

Well. I personally can't understand you can pump the water too fast, but I'm no expert. I'd like to know how it works (just out of interest).

On pumps, I've been running an EWP80 on my cooling system for some time now. No issues, goes great.
So if you've got the money, it's something to look at.

[cat007]

Well. I personally can't understand you can pump the water too fast, but I'm no expert. I'd like to know how it works (just out of interest).

On pumps, I've been running an EWP80 on my cooling system for some time now. No issues, goes great.
So if you've got the money, it's something to look at.

the faster the water flows, the less chance it has to absorb any heat. Much like the inside of an intercooler - there should be pressure drop, that way you know the intake air has had a chance to touch the cooler parts of the intercooler.

[XS1V]

But at the other end, it would be the opposite through the exchanger as it will need time to dissipate heat. I would imagine there is a correct flow rate depending on the system to have a high flow with the right time spent in each section.

The water needs to spend enough time in the I/C to soak up the heat from that and again in the exchanger to dissipate it as well as there being a good enough flow so that there is always cold water moving in to the I/C. Bit of a balancing act it would seem but I do not think faster is always better in this case.

Brad