Jeff

Yes, it sure was. But even before that it was used on WWII Aircraft both Supercharged and Turbocharged. Comments further in a post from Shaner on intercooling. It works well, believe it or not.

Venom

Anyone wanting to chop up their air box for experimentation, I found a spare on ebay
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?V...&item=593382356

-Venom

'00 B&R
www.reptilogic.com/s2k/

Rick Hesel

I've ordered some pressure testing equipment and as soon as it comes, I'm going to be testing the front surfaces of the car to determine where the highest pressure points are to site a CAI opening. I can't imagine that the stock location is the best.

If you haven't seen it, you might check out this article: http://www.autospeed.com.au/A_1023/page1.html . It's quite informative. I've ordered the gauge from them.

tpn

Rick,

I built one of the home made versions that they described in the article. My test shows the highest pressure within 12" either side of dead center of front grill, and up and down the flat portion of the nose

I set the pressure sensor to make connection at 35 mph at dead center of grill. Below are the speeds I had to hit to engage the sensor at various points.

Center of grill - 35 mph
12" left or right of center on grill - 38 to 40 mph
At edge of grill both sides - 40 to 43 mph
Center of headlight - 55 to 58 mph
In Faux duct - 53 to 55 mph
At "H" (or "S") emblem - 55 to 58 mph
At center, below grill location - 35 mph
At liscense plugs above grill - 35 mph

I will be interested to see if the cheap gauge I built really is accurate

S2KFanatic

Thanks TPN & Rick for this undertaking!

xviper

DITTO

tpn

I set up a "pre-airbox" on mine. I inducted thru 6" tube straight up and then closed off the area with a gasket in front of the intake. The hood serves to close off and seal the top "pre-chamber" area.

The airbox & tube has R2 aluminum backed foam insulation. Radiator has 1/4 " Celutex in front of airbox.





I played with both elbow bends and the 45 degree angled box shown above. The wind is striking the 45 degree angle and deflecting up to 6" tube seems to produce more pressure than the elbow joint (from my crudly built pressure gauge). I am guessing that is due to less tube to travel so less friction.

I started with a 2x4 port + 3" tube, then 4x4 port and 4" tube. This one is 6x6 port and 6" tube and gives me the best results to date. The gasket around the "pre-chamber" is not air tight and if made so then 4x4 port may work as efficently as the 6".

I may need to open the faux ducts to supply more air volume across the radiator due to the size of the CAI port. I am considering running right side in front of radiator and run the left side to throw cool air behind the radiator and cool the insulated airbox area also. So far no overheating problems though, with triple digit heat here and A/C on in traffic or after heavy RPMs.

Rick Hesel

tpn,

I'm surprised that the pressure in the faux duct isn't higher, but that's why we do the tests. It'll be interesting to see how ours compare.

calc

This is great stuff, guys! I was able to salvage the airbox from my totalled s2k. I'm thinking I will modify it for street and track time, and use the stock airbox on my new stook for autocross (until/unless I go to mod class). So the discussions coming up here and in related threads are potentially very useful to me.

Thanks,

cal

tpn

I was surprised also, but with it recessed in a closed box area, I think the air flowing over and down the side of the fender is reducing the pressure. If it were opened up, the readings should change for the better....I hope.