AZ summers suck and its no surprise that underhood temps here get alittle too high. I am running the CTSC with AC combo and in stop and go traffic, IATs can rach nearly 180F!!!

My mission here is to control this heat and make the numbers more reasonable...

The first mod I have done is the SoS upgraded heat exchanger, it seems to help a ton in reasonable temperatures but I dont really see a difference in IATs in stop and go traffic... IATs do drop considerably faster on highway driving but I cant seem to keep it below 130-140 range on highway driving with 110F ambient temps.

I have noticed that the SoS aftercooler is powdercoated and can confirm this helps against engine bay heatsoak. I spent the day yesterday taking temp logs, no unorganised to post, of difference scenarios and temp readings.

The highest was the comptech ac w/ sos exchanger, uninsulated, in stop and go traffic topped off at 180F

I did something really rice, covered the aftercooler in heat tape, while this did not affect the over all end temp, it took it significantly longer to heat up after driving in stop and go traffic and well didnt reach 180 again at all. The conclusion here is that some sort of coating or insulation would be beneficial to the bare aluminum aftercooler where engine bay and ambient temps are drastically high.

So far, it would seem that with good insulation of the aftercooler and a second fan for the exchanger, the IATs can be controlled within a reasonable margin... lets hope that works. I am sending the after cooler off to get a ceramic insulation coating so it helps insulate it against engine bay heat soak.

Next thing I did was add a low profile high CFM SPAL fan. 6.5'' diameter and this little sucker moves some serious air. It also helped slow down the rate the IATs rose in stop and go traffic but without the insulation of the AC it was useless.

 

that's crazy, my IATs don't even reach 140 in stopped traffic

 

I too have thought about wrapping my (SOS) aftercooler. I know I can use tape, but I'm trying to see if there's a wrap or blanket of some sort so it can be removed easier than pieces of tape. Also, I like how factory-like the SOS kit loos in the engine bay and I don't want to deter from that greatly

 

Oops, I didn't read that that you were sending the ac out for some coating. Please update the post with pictures and the like when you get it back.

 

Ya ambients average 110 around here during the day and the pavement is alot hotter. A majority of the IAT is the engine bay heatsoak, so hopefully this project helps with the issue.

 

Water injection. It works. U hit boost, it sprays and cools everything in it's path.

 

does it lower ECTs or oil temps?

 

Very interesting that insulating the aftercooler was the critical step. I've noticed that my car feels sluggish sometimes after it sits in traffic and everything heats up. Gonna have to follow in your footsteps...

 

I was considering this or meth, but SoS and UMS STRONGLY advised me against this route.

Yes, I covered most of the AC with heat tape and the amount of heat soak and the time it takes IATs to drop have improved. The bare aliminum aftercooler of the CT kit is a heat soak whore.

 

Im going to send the AC off to get a titanium ceramic coating so it looks better and is more efficient than the tape im using.