i put a expansion tank from a 1991 loyale on my 83 brat and since then ive i noticed i get bubbles in the expansion tank when the cars running and high pressure in the cooling system what could this be... the car doesnt overheat it runs at i would assume normal temp (the second mark on the gauge) about half way and the fan kicks on.. theres no coolant comming out the exhaust that i can tell it doesnt steam or anything... this brat is turning out to be a bad idea to buy haha or then again it could benormal im a toyota person but i moved to subaru to get gas milage

Cooling system pressure should be 13 psi.

 

EA81's do not need an overflow tank. Remove it.

 

The system will seek it's own level - which is usually around 1 to 2 inches from the filler neck. It should not be full - it needs room for the coolant to expand as it heats.

 

GD