onetype

iTrader: (6)

Car has been running for probably 3k miles. I'm still running a Volvo radiator (plastic end tanks), and Volvo plastic expansion tank. The only 2 caps available are 75kpa (10psi), and 150kpa (20psi).

10psi cap puts my boiling point at 242deg. Car typically runs 185-195 degrees. But boils over and pukes a little after it's been parked.

I put a 20psi cap on it and it split the expansion tank.

Should I deal with the puking, or order a canton expansion tank that will accept a 16-18psi cap?

I'm just thinking 10psi is way too low.

onetype

iTrader: (6)

At a 50/50 mix with the 10psi cap, I'm actually calculating 257.

garys 68

iTrader: (1)

If you want a 14psi cap, put the 20psi on the radiator, add an inline filler in your hose, use a 14psi cap on that.

onetype

iTrader: (6)

It's not that I'm wanting more pressure, I guess I'm just wondering if 10psi is enough.

It's been absolutely flaweless, and runs remarkably cool for a turbo car. Never gets over 205. Single Speed Mark VIII fan on a tiny Volvo radiator.

Just don't like the little half dollar sized puddle of coolant it leaves after sitting.

Pop N Wood

iTrader: (1)

You can't put some type of overflow bottle on the expansion tank?

I hear you about fixing the puddle. That is enough antifreeze to kill an average sized dog.