Quote Originally Posted by Dorian View Post
I am not concerned as this is the head temp so the coolant should be a bit lower. Cheer Glen
Do you have any data to support this? Or is it because you are running an electric thermo fan? Just curious as in my experience, running both head and coolant temp gauges, the coolant heats up faster and peaks several degrees hotter than my head. It also cools down a lot faster though. I believe this is due to the fact that my D1 has a viscous hub that needs the heat from the radiator to cool at it's maximum efficiency so it has a quite a few seconds lag for the dispersed heat to lock the hub up and has the same effect (in reverse) when cooling. This is with a new rad and water pump whilst running penrite coolant.

Regards,
Lane