Question for intercooler gurus
#1
Question for intercooler gurus
Hey guys, I have an air-to-water intercooler left over from a 200sx project that I want to use on my s5 TII and I have a crazy idea. I have researched the pros and cons of air/water versus air/air intercooling, and I want to try something that I haven't heard of anyone else doing, so tell me if you think I've gone completely nuts. I know the factory TMIC is good for up to about 10 or 12 psi, I am planning on running 15 to 25 psi (s5 hybrid, Megasquirt, etc.) and I have never been crazy about using a FMIC due to the long piping runs and the pressure drop that all contributes to lag. What about coming right out of the turbo and into the air/water intercooler and then into the TMIC???...in this way, I would have the low pressure drop of the air/water unit combined with the additional drop in outlet temps of the TMIC and still be able to keep a shorter distance for airflow between turbo and combustion chamber. Have I gone completely mad??? LOL!
#3
Originally Posted by RETed
25psi on pump gas?
You're asking for trouble...
Unless you're running 100 octane stuff as pump gas?
-Ted
You're asking for trouble...
Unless you're running 100 octane stuff as pump gas?
-Ted
#7
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Part of the reason to going to a larger intercooler is that at a point you start seeing significant boost drop across the stock intercooler because it just cant flow well.
Anyway, if you ran it through an a/w intercooler, and then through the stock intercooler you would probably heat the air back up.
If you have an a/w use it, and ditch the stocker. Just get a big heat exchanger and mount it up front in a position that obstructs the radiator as little as possible. I personally question the idea of cramming a huge air/air ic up front in the path of the radiator on a rotary anyway. These engines can get so hot in stock trim that I wouldnt feel comfortable blocking up the radiator anymore than was absolutely necessary.
BC
Anyway, if you ran it through an a/w intercooler, and then through the stock intercooler you would probably heat the air back up.
If you have an a/w use it, and ditch the stocker. Just get a big heat exchanger and mount it up front in a position that obstructs the radiator as little as possible. I personally question the idea of cramming a huge air/air ic up front in the path of the radiator on a rotary anyway. These engines can get so hot in stock trim that I wouldnt feel comfortable blocking up the radiator anymore than was absolutely necessary.
BC
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#8
If I do decide to use both intercoolers, I plan on monitoring air temps at the outlets to see what happens. You can only get so much heat transfer with an air/water unit without adding ice to the reservoir. If the top mount removes additional heat (such as a heat soak condition when you park the car to get groceries, etc.) then I will use it as planned. I like the idea of keeping the hood scoop functional.
#9
I agree with you BC, I plan on using an aluminum radiator from an ATV that uses it's own shroud and fan. It's just big enough to handle the needs of the air/water unit, but small enough not to block much of the main radiator, condenser, oil cooler, etc. I'm thinking of using a stock electric coolant pump from a supercharged F150, I have seen all this stuff on eBay pretty cheap.
#10
BDC Motorsports
Originally Posted by anewconvert
Part of the reason to going to a larger intercooler is that at a point you start seeing significant boost drop across the stock intercooler because it just cant flow well.
Anyway, if you ran it through an a/w intercooler, and then through the stock intercooler you would probably heat the air back up.
If you have an a/w use it, and ditch the stocker. Just get a big heat exchanger and mount it up front in a position that obstructs the radiator as little as possible. I personally question the idea of cramming a huge air/air ic up front in the path of the radiator on a rotary anyway. These engines can get so hot in stock trim that I wouldnt feel comfortable blocking up the radiator anymore than was absolutely necessary.
BC
BC
I say go for it Scrip.
Here's an old pic of my old A2W unit from Apr 2000:
http://bdc.cyberosity.com/v/ProjectC...fc_17.jpg.html
B
#11
Thanks for posting your pics BDC....that's the size air/ water unit I'll be using but I'll mount it right in front of the turbo by the pass. side fenderwell and plumb it into the top mount unit. That's a sweet-looking car and a very clean engine bay you have there my friend. I'll post pics of the install when I get things started....I am collecting the last few parts needed to do my engine build so it will be a little while until I have pics.
#12
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Originally Posted by BDC
Really? Could've fooled me.
Just curious if you monitored pre-IC pressure and post-IC pressure. Im not saying that it couldnt work. I actually think modifying the stock intercooler for an A-W setup is a very efficient use of your money, but I question whether a larger core, or passing water through the core and the intake charge over it, is a more efficient approach.
BC
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