Under hood temps.... how to lower them
#16
Official Bay Area Patriot
Fuse 24 Assassin
Rennlist Member
Fuse 24 Assassin
Rennlist Member
I know someone is going to point the finger at me and say "wrong" for this.... lower temp thermostat? IT has kept engine temps down while in motion for me. I also had the cooling flaps disabled on my car by pulling the fuse to leave them open. I don't think the OB cars have them though. You could do a 599 GTO mod to your hood too...
#18
Nordschleife Master
I have a 931 hood on my 944 for venting. I would consider grafting a couple of those (Naca duct) in. I like Mark K's setup too.
#19
Nordschleife Master
I know someone is going to point the finger at me and say "wrong" for this.... lower temp thermostat? IT has kept engine temps down while in motion for me. I also had the cooling flaps disabled on my car by pulling the fuse to leave them open. I don't think the OB cars have them though. You could do a 599 GTO mod to your hood too...
If your cooling capacity, radiator and airflow, aren't big enough then the engine temperature is going to wander up and down at some point above the thermostat setting. Optimal A/F and timing change as the engine temp changes, so this is not good.
The "real" under hood heat problem is heat soak post shut down, thats where peak temperatures occur, and I don't see the thermostat having any effect on that.