Originally Posted by SLK32Germany
Brian,
great Write-Up and Pics! Thank you very much for sharing your experience!!
I have a question about the stock surge tank:
The tank is used for nothing more then a place to expand into when it gets hot and to draw coolant from when the coolant cools down and to add fluid to the system. Is any (hotter) fluid draw back into the IC-System while boosting hard? Or is the fluid draw back in the IC-System after driving when you have shut the engine down and everything cools down?
Thanks.
Bruno
The two systems are expanding and cooling at different times when driving. With the engine coolant drawing back into the radiator (cooling) after shut down. But the IC coolant is heating up and cooling down (somewhat) as the SC spins up and down while you drive.
Plus with the current setup, there is nothing to stop the hotter coolant from "heat soaking" to the cooler coolant; heat only needs the liquid as its travel medium.