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my a2w intercooler is done.

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Old 12-31-03, 02:26 PM
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my a2w intercooler is done.

well I finally finished my a2w intercooler project.

the main reason I went a2w set up.
1 no money for FMIC
2 I don't want block the air flow to radiator
3 I like making things.

parts.

GMC typhoon,cyclone intercooler core(I forgot the size
but it's pretty big for a2w).
biggist heater core I found(10*10*2)
mercedes axu water pump.
hoses.

well i spend about 400 dollars.

the results are.

1psi boost gain.
car cools alot better (i guess even stock intercooler blocked air flow from radiator.

I don't have PFC so I won't say anything about the
intake temp but I knew any thing is better than stock.

of course there is down side
no show , more potential of failure and may a little heavy
than FMIC.
but I'm pretty happy so far and now I can run 12psi with out worries about stock intercooler.
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Old 12-31-03, 02:35 PM
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OK it's modified GMC typhoon intercooler core.
it's made by Garret.
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Old 12-31-03, 02:39 PM
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heat exchanger.
It's hard to see but this about the biggist that I can fit there.
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Old 12-31-03, 02:44 PM
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circulation pump.
it's bosh pump suppose to last very long.

it's damm hard to up load pics.I have to reduce size really small.

well Happy new year guys.
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Old 12-31-03, 02:50 PM
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Bitchin idea man. Kudos! Any chance you got pics of the parts before install and/or the install process?
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Old 12-31-03, 03:23 PM
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Looks like a pretty good idea, but I'd be interested in seeing before and after air temps. Any chance you're getting a gauge or PFC soon?

Last edited by 911GT2; 12-31-03 at 03:26 PM.
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Old 12-31-03, 03:56 PM
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well no plan to get pfc soon.I wnt to have wide band o2
first so I can tune my PMC first.
any here is the core before inlet outlet modified.
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Old 12-31-03, 04:00 PM
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another one

it was like 10*8*4 inch too lazy to go out to mesure.
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Old 12-31-03, 04:08 PM
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well I went out.
it's 9*5*4 inch with out end tanks.
I picked at ebay for 180.
but usually it goes less.
I tried to find something bigger but according to spearco
it should be way enough for 350 which is my target.
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Old 01-01-04, 02:04 AM
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Vortech seems to put a great deal of trust in a2w coolers

http://www.vortechsuperchargers.com/products/coolers/

Hey Redrotor, are you planning to install a water tank?
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Old 01-01-04, 03:28 AM
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Dude, you have got to get a air temp gauge or somthing. I would love to see before and after results. I'm also thinking of going the a2w route.
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Old 01-01-04, 04:28 AM
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Great job!

Another inevitable question: How much does this contraption weigh when wet?
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Old 01-01-04, 04:57 AM
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what is a a2w?

air to water?
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Old 01-01-04, 05:21 AM
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Yup, a2w="air to water". Ain't abbreviations a bitch?
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Old 01-01-04, 06:10 AM
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a2w is kewl, an i like ur setup, but im gonna go the v-mount way...
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Old 01-01-04, 10:03 AM
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Great idea. Should do some measurements like pressure drop, temperature drop etc.

That Bosch pump is similar to the aux electric water pump used in the VW VR6 or Mercedes 280D. It pumps 6 gal per minute (unpressurized system) and should be good for a long time, at least 25,000 miles if you use it continuously. On the VR6, at 25% duty, supposedly lasts 50,000 miles.
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Old 01-01-04, 12:41 PM
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may be I'll try to hook up the volt meter on the stock
air temp sensor wire later.

the weight of course it's heaver than stock but also FMIC is heavy too it take about a half gallon of water
and core is about 10-15 pounds and heater core is a little heaver than stock oil cooler.

I don't know exact pressure drop but I gained 1~1.5psi over the stock so if some know the drop on the stock
one we can calculate I guess.

yea the pump I found many a2w guys use this pump
they said it suppose to last 2000 hours countinus use.
this is mercedes AUX pump and I only paid 75US.
If someone worried about pump life he can put temp S/W so it can run when fluid gets hot.
good thing about this pump is it's making just enough
noise when I turn the key on I hear the pump running
but as soon as I start I only hear roar of rotary so I can make sure pump is ok before I start the car.

is this pump suppose to used unpressurized?
well I checked on mercedes it looked like it's pressurized.
because my system is pressurized sysstem.
I guess you meant it pumps 6gal when unpressurized.
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Old 01-01-04, 12:55 PM
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Dude, we need temp numbers for this thing. Is there anyway that you can get some?

Good idea.
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Old 01-01-04, 05:47 PM
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For intake temps just get an indoor/ outdoor temperature gauge from Radio Shack. $9.99
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Old 01-01-04, 06:55 PM
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Originally posted by Redrotor

I don't know exact pressure drop but I gained 1~1.5psi over the stock so if some know the drop on the stock
one we can calculate I guess.




The stock system looses 3 psi. Here I did a test a little while ago.

https://www.rx7club.com/showthread.p...ighlight=sucks
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Old 01-04-04, 09:52 PM
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Originally posted by Redrotor
heat exchanger.
It's hard to see but this about the biggist that I can fit there.
Nice work. Heat soak could be an issue in hot traffic. A fan for the front exchanger, or adding a big summit oil cooler in front of the stock rad (with rad fan switch) would eliminate any traffic heat soak issue.
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Old 01-04-04, 11:19 PM
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Nice I like it alot.
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Old 01-05-04, 07:20 AM
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Thumbs up

You definitely deserve a pat on the back for doing all of that yourself .

How do you plan on dealing with heat soak? I can't imagine that an air to water setup will work for hard street driving/roadracing applications, which is my primary concern.......
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Old 01-05-04, 11:10 AM
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I don't really worry about heat soak.

first traffic is not really bad here.and second a2w intercooler doesn't really have to have a heat soak because
when the car is idling turbo outlet temp is way lower than when it is boosting because it's not compressed and this air keep the water temp moderate of course
it's hotter than when it's moving but it's lower than
boosted air.
of course it would heat soak more than FMIC but should be same like big smic.

thanks guys.
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Old 01-05-04, 12:16 PM
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Originally posted by Flybye
Vortech seems to put a great deal of trust in a2w coolers

http://www.vortechsuperchargers.com/products/coolers/

Yeah, but they also make centrifugal superchargers.

Just kidding, that looks like a good setup. I'd like to have a larger heat exchanger though. I've thought about using a motorcycle radiator when I build one.
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