Expansion Tank

[e30austin]

I don't see why you would try to modify or change a system that works well as it is. Sure, it doesn't look the prettiest, but who gives a shit, it works.

[FLG]

Doing that will allow air into the system, which can then cause problems. A warm engine would puke all the extra coolant out, but then as it cooled, it would suck air back in.

Even with an overflow bottle, you need to keep a bit of coolant in the bottle so the hose going into it isn't exposed to air.

Worked fine on older cars that didn't have a overflow... My charger included. Air really dosnt go back into the system it kinda sits on top of the radiator till the fluid heats again expanding and taking up the extra room.

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[AndrewBird]

Yeah, that's because the radiator cap is the highest point in the system. If you used one of those hose cap things, it wouldn't be.

[FLG]

Very true.


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[NickL]

Thank you to all those that answered. Sounds like this is doable with the Evans coolant and an overflow style setup. Now, one last question. The cap will bleed pressure at a certain psi, should I find a cap with a certain pressure pertaining to the S52? Or do all caps bleed at the same pressure?

[FLG]

If your going to run a low or no pressure cap then it won't matter. You'll most likely have to modify a cap though, as I'm not sure a low or no pressure cap is available.

If your going to run a proper cap/setup then you don't need to run the Evans stuff though having a low or no pressure system will help extend the life of seals and hoses, not to mention if you get a leak it will be a mere trickle.

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