Hold On

How about we forget the sixty questions and just spit it out if you have something to share. If not delete the post.

brutus

So you are running gasoline as your cooling liquid ! Sending heated fuel back to the tank.

victor25

Wow ok already, cant a guy have dinner. The cooling source for the intercooler is air. I was thinking about the arguments when people battle over what better air/air or water/air intercooling. So I combined the two and am using pumped fresh air as my coolant instead of water. there is never any heat soak because the outside air is a constant and because fresh air is always flowing through the intercooler. well duhhh, why didnt we think of that sooner? Here is the kicker.. the more rpms the more is air is being moved through the intercooler

Hilton

So you're using the stock air pump to pump air through the intercooler?

What kind of volumes of air does the air pump push out?

brutus

And I thought using gasoline was a stupid idea !

victor25

Believe it or not.. Yes... I thought what the hell its worth a shot, and whalla, it works great. The pump actually moves a lot of air, more than I expected. So basically take the boosted air and the outside air, then split the difference. How easy is that? It is working way better than I expected and its right there.

Call it a stupid idea if you want, but it works!!

hacker-pschorr

Stupid no, ineffective? Yes.

Split the difference? Unless your fan is moving more air than the supercharger, it's a losing battle and your core will heat soak and make the intake air charge hotter than if you had no IC at all.

This has been tried before (not me or on any 928 that I know of) and that is why you don't see it. It simply doesn't work.

Sorry.......nice effort though.

Unless you have a fast air temp sensor before the IC and in the plenum, you have no idea how well it's working and your claims are 100 speculation.

Now take your IC (which looks very nice) and pipe some water through and you will have an awesome setup.

victor25

I know it sounds crazy Hacker, but it is working. That intercooler was originally made for water, but I gave the air a shot and it works. I have been testing it for a few days now and it is working well.. Granted the water I am sure will work better, but water gets heat soaked too... Right? Plus it takes a lot of work to get water installed and working well.

I have taken long city drives with some WOT runs and pushed it pretty hard. I know it sounds stupid, and I am sure it would not work on the track, but it sure seams to work so far. I was pushing 200deg at times before, now I cant hit 140

brutus

Well said. Also worth mentioning that air/air and air to coolant heat exchangers are designed very differently for good reasons. You might be OK on a few second dyno jet run but much longer than that or repeated full throttle runs see above.

IcemanG17

I'm with Hacker...... I question the efficiency of an inter cooler designed for air-water (don't worry IT IS) with ONLY air....quite simply it WON'T WORK....water carries heat much better than just air....hence the visual design differences between them.....not to mention the factory air pump ADDS heat to the air...

Sure you can put down a sweet dyno pull or 3....but it WILL heat soak and lay down on a track......I have seen SO many supercharged Miata's that start off brutal, but lay down after 10 minutes....same for turbo Evo's......

It all depends on what you want the system to do...for your purpose, a street car, it should work....BUT be careful in hot climates...once again you live in Michigan....so you should be fine....

victor25

I do realize it will prob not work on the track, but I race motocross, not cars. So my car may not need water/air intercooling.

Besides here is what I know! This first run is without an intercooler...OUCH... temp went from 80 to 200 plus


The second, third, and forth are after driving around town for about 20min and letting everything under the hood get good and hot. then I did 3 back to back runs - apx 0 to 100 - around a large country block, second run had a bend in the road, but they are pretty hard runs. Maybe it could be cooler with wate, but it is a hell of alot better than before!!!

so how about this.... Just let the car owner decide weather they want water or air. The air version takes 20 min to install and works. Or install the heat exchanger, pump, hoses, wiring, weight, money, etc, and take 2 days work for the same power around town.

fraggle

For a street car it seems like a sweet solution to me - and has data to back it up. I'd keep the sensors in place for monitoring the heat and mixture, just in case.

My SVO mustang had an air to air intercooler and it was pulling 18lbs of boost. Of course, that was near factory setup, but it worked. I'm not sure how it would do under an extended endurance run, but it sure worked well when I drove it.

Every setup has its compromises.

Randy V

Praise the Lord!

hacker-pschorr

It honesty doesn't take much to get the water system working. A pump on the windshield tank and some hose. I've done a few dozen

Yes any system can get heat soaked, but with an air / water system you can fix the issue many times with a larger pump and or heat exchanger. That is the beauty of air / water systems.

When the McLaren SLR was under going extreme heat testing, they were heat soaking the unit on top speed runs. Renntech released a kit with a larger pump and heat exchanger, all bolt in....problem solved. Same for the SVT Mustangs, the #1 upgrade is a larger heat exchanger but they also have a small water reservoir (compared to the 928) so that isn't helping. This is good for me since I've bought a couple of the OEM used heat exchangers from the SVT forum. Very nice unit and I usually only pay $50.

What temp sender are you using for this reading? Mike (Z) has literally tested every air temp sender we could find and only a couple were fast enough to accuratly record rising intake air temps in a boosted car. Most give false positives.

Hands down the fastest sender is the VW unit:

http://www.fcpgroton.com/product-exe...r,+0280130085+

I have four of them in my car.

140 degrees in what ambient temp? In the past few weeks on a 50 degree day? Then that's way too high IMO.

Nice to see it is working........but I fear it's not enough. Kudos for thinking outside the box though.

Maybe with a much larger fan.......?

victor25

So where do you put the heat exchanger. I was seriously struggling to get a decent heat exchanger in the front of my S4. The only way I could get a decent one in there was to remove the air dam flaps assembly and motor. There just is not much room under a stock S4 hood for pumps, exhangers, hoses, etc

I guess my point here is that it is an easy starting point for a stock car, and you could always upgrade to the water cooled system.

I am using the GM air temp sensor with the sharktuning filter on 4 or 5