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Old 07-14-2016, 08:47 PM   #1
azlegacysti
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Default WAIC with a twist?

Can anyone tell me why I shouldn't (or couldn't) install y splitter hoses on my radiator in and out hose and run a water to air intercooler as part of my cooling system?
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Old 07-14-2016, 09:21 PM   #2
Krang
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Well, the really big problem with this is your cooling system runs at a fairly constant high temperature, which would probably end up heating your charge air rather than cooling it. So there is that.

That's why you should always have separate coolant systems for your AWIC. Which, isn't terribly expensive or difficult to put together either way.

With the complexity of these systems, and your reluctance to do it correctly, I would suggest staying with a standard air to air intercooler as they are much more simple.
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Old 07-14-2016, 11:03 PM   #3
azlegacysti
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Originally Posted by Krang View Post
Well, the really big problem with this is your cooling system runs at a fairly constant high temperature, which would probably end up heating your charge air rather than cooling it. So there is that.

That's why you should always have separate coolant systems for your AWIC. Which, isn't terribly expensive or difficult to put together either way.

With the complexity of these systems, and your reluctance to do it correctly, I would suggest staying with a standard air to air intercooler as they are much more simple.
I can buy most of what you're saying (and for the record I was just asking, I'm not opposed to running a separate heat exchanger) but I find it hard to believe that the radiator outlet water is not cooler than the engine is running at. That would make the radiator a really ineffective heat exchanger and I can hardly buy that.
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Old 07-16-2016, 11:25 AM   #4
JWX
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Quote:
Originally Posted by azlegacysti View Post
I can buy most of what you're saying (and for the record I was just asking, I'm not opposed to running a separate heat exchanger) but I find it hard to believe that the radiator outlet water is not cooler than the engine is running at. That would make the radiator a really ineffective heat exchanger and I can hardly buy that.

......wow...... So, do me a favor, get your car good and hot, then grab the upper and lower radiator hose. Then get back to us at how much cooler the water is....
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Old 07-16-2016, 06:38 PM   #5
Krang
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Quote:
Originally Posted by azlegacysti View Post
I can buy most of what you're saying (and for the record I was just asking, I'm not opposed to running a separate heat exchanger) but I find it hard to believe that the radiator outlet water is not cooler than the engine is running at. That would make the radiator a really ineffective heat exchanger and I can hardly buy that.
I don't think I was implying that the coolant leaving the radiator wasn't cooler than the engine, simply that it would still be a higher temperature than ideal to run a through a AWIC for any noticeable benefit.

Having a completely separate system for the AWIC is ideal, it will be more efficient in every aspect of its operation.
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Old 07-22-2016, 11:55 AM   #6
JMlegacy
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Long and short of this is BMW does it and it works. THey do it partly because there wasn't enough space to put a regular air intercooler. It's a waste of money for our cars, a water injection system would be much better bang for buck.
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Old 07-22-2016, 06:08 PM   #7
azlegacysti
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Originally Posted by JMlegacy View Post
Long and short of this is BMW does it and it works. THey do it partly because there wasn't enough space to put a regular air intercooler. It's a waste of money for our cars, a water injection system would be much better bang for buck.
Sort of where I got the idea. I was fairly sure some of the turbo autobahn missiles did something similar. I'm sure you need to run a very effective radiator for it to work at all.

I live in Arizona so in regard to my own heat soak problems I think I'm going to make a water sprayer system by tapping into the windshield washer reservoir.
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Old 07-22-2016, 09:45 PM   #8
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Originally Posted by azlegacysti View Post
I think I'm going to make a water sprayer system by tapping into the windshield washer reservoir.

i have done the same. works great. just remember to use water only in the resevoir and not windshield washer fluid.
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Old 07-22-2016, 11:38 PM   #9
azlegacysti
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i have done the same. works great. just remember to use water only in the resevoir and not windshield washer fluid.
Hahaha yeah I've been thinking about that. Maybe label the filler cap somehow or something...
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