phoQ

Just curious as to if it would work. Anyone wanna chime in??? I mean in regard to a sos, vortech, comptech type of kit...

candymanjl

the problem I see is that you'll end up with a air-to-air intercooler, heat exchanger for the air-to-water intercooler, the a/c condenser core, then finally, your radiator all trying to compete for the same cool, fresh air. some cooling problems on boosted S2000's are in part because of the air being so heated by the time it gets to the radiator it's not cooling the coolant enough.

that being said if you found alternate places for the heat exchangers for the air-to-water, say a couple of smaller exchangers mounted in front of the each of the front tires with some air ducting and fans, then it would be possible and maybe the systems could work well together.

would it be worth all that effort, don't know, it would be expensive and time consuming that's for sure. I think I would invest in a beefier air-to-water only setup (since you're talking about the centrifugal systems) with a large intercooler, large heat exchanger, with a large coolant capacity. that way you're not adding a lot of air volume to the system (the more air space the more you have to compress) and you should get pretty constant air temps with out letting the intercooling system heat soak.

s2000Junky

Good advice. I came accross someone on here not too long ago that was equiped with both, dont remmeber much detail on it as far as location etc. The fake brake ducts would actually work really well for two aftercoolers, or even just the one that already comes with the CT or VT kit. The Rx8 locates there two small oil coolers in thier front "brake" ducts. One condensor would probably be better then two actually, there would be too much boost loss and inefficiency to offset the added intake cooling. In fact isnt a intercooler more then plenty for high boost SC alone?

Sellout

There's really no point in doing something like that. A large air/air intercooler is more than enough cooling, as is a well thought out air/water setup. Running both would be counterproductive.

s2k aok

http://www.ultimate-racing.com/Products2/S...omptechSC.shtml

according to UR the air-to-air temps are 'bout 85-90F. while the air-to-water is 'bout 114-164F. i'd just go with the fmic rather than risking some sort of pump failure with the aftercooler.

Sellout

Perhaps I should also mention that I have worked on a car that ran both, and it did work well for drag racing. Anyone remember the AEBS focus race car that ran in the 8s several years back? That car had a really big vertical flow front mount that was split into two passes with a divider in the top end tank. One side was air/air, the other side had sheet metal welded to front and back to make a tank that we filled with ice water between runs.

The air/air side would remove heat from the charge air before it hit the air/water side, and from there up into the throttle body. After a run the upper intercooler pipe and intake manifold were always ice cold, which was kind of a big deal, as we were running 40psi from a T-72 with anti-lag to spool it on the line. Full boost right off the line...

candymanjl

the problem with the air to water setups is that eventually the system will heat soak where with an air to air there's a never ending supply of fresh air when you're moving. the reason you see a lot of drag guys running air to water setups is that you can fill your reservoir with ice and get sub ambient intake temps. can't do that with an air to air, the coldest you could run if it was 100% efficient is whatever ambient is.

s2mmkay

that would be right if you werent running a heat exchanger for the water along with a fan for the exchanger. and the air/water will run closer to/below ambient than an air to air will ever run.

air/water is way more efficient in all aspects.. its just that it requires more parts/maintenence. its not for every one but there is no denying that it works better than an air/air anyday of the week.

EternalLx

It depends on how efficient the air/water system is to be better than air/air systems....

Guys that had vortech/comptech air/water system had problems with heat soak on the track... after they switched to air/air... temps were lower and consistent.

imo.. air/water is better for Drag (put ice cold water into the aftercooler and you can get temps way below ambient)
air/air is better for track

Sellout

Air/water is not more efficient. Direct heat exchange without additional parts/motors is always more efficient. Air/water just gives you the ability to run ice water at the track, which gives you nice cold charge air temps. While you're running cold water through the system it's more efficient than air/air, but that's the ONLY time that it is.