Re: Anyone try e-fan on the IC ?
Hi Guys,
Well, I spent most of today re-routing the IC/CAC lines on my Sy. I finally got in most of the parts (at least enough to get started), so are about 3/4 done now. Here's a link to the pics....
http://s137.photobucket.com/albums/q230/wyosyclone/IC and CAC Upgrade/?start=0
Just to set out my goals...
1. Replace the old factory pump
I found a GM pump that flows 6GPM and only draws 2 amps of current! As far as I can tell, it is from the new supercharged Cobalt. Also, I found a couple of really cool 3/4" elbows that are used on the Cobalt IC system coming out of the pump. I ordered two of these, and thank God I did cuz I could not have run the lines without kinks without having these on hand!
2. Reroute the lines from heat sources
I wanted to route the lines through the passenger's side fenderwell. I ran the feed to the IC high, and ran the return to the CAC low. The only place the lines come in contact is right at the front of the battery box for about 3". I've seen pics of lines wire-tied together, but I didn't want the heat transfer from the hot line to the cold. Also, I wanted to experiment with some of the thermo insulation and installed a heat reflective sleeve over the feed line to the IC, from the inner fender well to the IC only.
3. Flush the system
Boy was this needed!! When I went to flush the IC and CAC with clear water my hose would barely push water through them, even though the coolant looked brand new. I found the coolant had turned into a kind of thin jello-looking substance. I think that even thought this Sy had gone through a frame-off resto, sitting took it's toll on the coolant. After flushing things seem to be fine.
4. Install a fan
My thought for installing a fan was simply to move some air throught the CAC during in-town driving in order to prevent heat soak, especially at stop lights. I've thought about how the SPAL and Derale fans cover up quite a bit of the radiator with the motor structure, and for this reason I decided NOT to mount the fan flush against the CAC. Instead, I mounted it to the CAC mounting frame (about 1" away from the CAC). In testing, it moves a lot of air through the CAC, and I hope will allow a lot of air to move through at highways speeds - kind of bypassing the fan if necessary.
I ended up not using a relay on the fan. After doing some current-draw calculations on the fan and new pump, I decided that the factory wiring, relay, and fusible link are more than up to the task of delivering the current needed for the pump and the fan (if I would have used two fans, or a more current-demanding pump, I would have definitely used an additional relay).
Now, I'm waiting on an order from RPM (will be here on Monday)... I'm going to install an AFPR while I've got things apart - this is in preparation for installing a wideband and 3 bar map for my upcoming tuning sessions! Oh, and I still need to do the bypass mod for keeping the CAC pump and new fan running all the time.
....Rob