Guys I'm running ctsc+ac with bolt ons @7psi.

Car has been running for an hour in a mixture of slow and hot driving, can anyone give me an idea of normal iat temps?

It's hovering around 116-120f when driving the temperature today is around 65f.

It seems the temperature of iats rise when putting my foot down reaching max boost?

Can anyone give me any data? I think my pump maybe weak - its been off and put back on again, i thought i may have had an airlock?

Thanks

 

What are you using to monitor your IAT temperatures?

 

I'm using torque for an android phone using a Bluetooth obd2 logger.

In UK btw.
Thanks

 

Bump

Shouldn't the iat temps drop when opening the car up? the iat temps rise!

Could an airlock cause this, and if so how can I get rid?

For example, 60-65f outside...

Generally accelerating/cruising at 30-40mph temps seems to hover around 115f, when i open it then seem to rise to around 130f, then backing off and cruising again then go down to around 115f again.

Does this sound normal, i could sware in the past the temps would drop in wot (maybe outside temp was slightly colder)??

I also let the car stand for 15minutes with the bonnet closed and the aftercooler was hot'ish and water inside was warm.

Tia

 

Sounds totally normal to me AJ. 120-130 is ok. Of course colder is always better, but your not risking anything there other. Your ait will rise when you accelerate, your A/C with your pump is not variable, its at a set rate, to circulate only, yet when you accelerate, your blower spins faster generating more heat. Acquiring a larger heat exchanger such as what SOS provides along with their higher flowing pump to match will lower your ait a reportedly 40 degrees or so. As someone such as myself generating 13 psi with the stock Comptech A/C system you might agree I have larger issues then you do. I am however cooling my charge more effectively with water/meth injection so I'm keeping things in check this way, however sitting in stop and go traffic when I'm not boosting can generate some heat soak and I should probably have the larger heat exchanger for this reason. Good luck mate

 

Thanks mate, its the start of summer here in the UK and temps had got into and around 65-70f, however i could have swore my iat would lower in the past but maybe i was wrong.

 

Make sure the system is flowing coolant correctly, you could have a hose that kinked and slowing flow or an air bubble near the pump. I'm not sure on your system but in my setup I can open the overflow tank and see the coolant flowing. One time I had a hose shift and the coolant wasn't flowing down to the pump, my temps shot up until I found that and moved the hose, then the coolant flowed correctly again.

If everything is working right then you'll have to look into upgrading the system. I've yet to see any kit that comes with a large enough reservoir and heat exchanger. They're all small and get easily heat soaked if you get on it a few times in a row or sit in traffic. They probably pick the smaller parts to make the install easier, once you get larger parts you have to modify more parts of the car to fit everything.

My cooling system keeps up ok on my car but it could benefit from a large heat exchanger. In my case I think I'm just going to get water injection and leave the other parts alone. Water injection works very well and is much easier than uninstalling my current parts and installing replacement parts.

 

Guys I took the pump apart, the brushes are shot so the pump would not run correctly and sometime starts/stop.

I have bought a new pump, i was pretty sure my iats should drop quickly from ~120f to ~95f in a matter of seconds.

So hopefully when i replace the pump all will be well and iats will drop again, i thought heat maybe an issue with higher than 7psi.

Cheers for the info guys

 

Be sure to have your pump flowing the water directly to the aftercooler first, then to the heat exchanger, and from the heat exchanger to the pump again. Also, be sure to use 100% water, or add some water wetter as well. I dont remember the degrees anymore....but hopefully that tip helps

Even when I had my system running at optimal efficiency, my IATs were still high. Never did solve it. Still a problem with my SOS kit, but not as bad. My IATs are lower now, but thats because the aftercooler core is larger than the comptech, and I have a large heat exchanger from SOS...

 

AJ just fyi, if you have any doubts about the pump in the future, you can remove the fill cap on the A/C and see the water circulate, there will be a good constant movement. My pump is set to come on with the acc ignition so i can hear the pump and water movement in the A/C with the engine off.