Are these IAT's normal for this temp?
The Question is are my IAT's too high for the temp outside?
When I did the run it went up to 159f
That was first run from a stand still
Second run 20 mph ambient still 87f and iat start is 132f, it was right after the first run. Iat ran up to 156f this time.
I am thinking of changing the coolant?




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For what it's worth my 168-76 stack in 80+ temps will go to 140 on a very hard 3-4 pull on a very modded system and of course no ice in the tanks....just water.
For what it's worth my 168-76 stack in 80+ temps will go to 140 on a very hard 3-4 pull on a very modded system and of course no ice in the tanks....just water.



1- make sure the system has no air ( so bleed the system well from the bleeding point)
2- make sure the supercharger water pump is working ( let AIT reach 45C then check if there is electrical current reaching to the pump from the connector) ( if not then this is your issue, however if the pump is not working then the temps should be much higher around 60c crousing on the highway...
3- supercharger water pump is weak due to age or because it is the bosch 003 part number ( if this is the case then replace it with the newer bosch 010 updated part number)
4- split the supercharger cooling system from the main car cooling ( there is many videos on youtube showing how to do that and the parts that you will need ) it is a very cheap mod that you can do at home in one hour tops
5- supercharger intercooler is clogged or dirty ( to fix that you will need to remove the supercharger from the car and remove the intercooler under the supercharger unit and clean it very well from outside with brake cleaner and from inside with soup and water or any radiator flush ...
now this is the only reasons for the stock setup to have high IATs
now if your car has crank or supercharger pulley upgrade then now it is a different story , yes of course it could be the same issues as above but with extra boost you need more cooling ( bigger heat exchanger) so if this is actually the case , then just check the first 3 points above and install a bigger intercooler.
Last edited by ls1_mast; Jul 23, 2024 at 07:14 AM.



