coolant overflow issue

[pwcracer]

Ever since I installed the 180 degree thermostat (And my SC for that matter) when my car is parked, it spits coolant all over the ground after I run it. If I leave the overflow tank low on coolant, (where my coolant light is on) it doesn't do it. The car doesn't go above 195 degrees, either way, but I am trying to figure out what is going on. I can hear the coolant bubbling past the radiator cap (16lb) and entering the overflow. My guess is a head gasket is bad and it's letting air from the combustion chamber into the coolant system, although the coolant and oil look clean and my compression test was ok..

I did a compression test and had 125psi on all cylinders, without holding the pedal down.

 

[94-302-vert]

Are you using the in-dash gauge or aftermarket to read the temperature of the coolant?

It really sounds like you are either boiling the coolant or, like you suggested, pressurizing the system with air from the combustion chamber.

Both the 180' stat and the blower went on at the same time? and it started at that time?

Chris

 

[pwcracer]

I do have an aftermarket temp gauge. I wish I knew for sure what is going on with this thing. i would think the coolant would always look foamy, but it's not.

 

[pwcracer]

The more I search this issue, the more I think it is a head gasket. I am going to look into replacing them

 

[Hef5.0weisen]

Kenne Bell too, huh? Funny, mine is doing the same thing. This weekend I'm re-sealing the lower manifold, I took off a street heat when i did mine, replaced with stocker, think one of the gaskets may have moved whe I layed it down. Also, and this may be reaching a bit, but replacing the belt tensioner too, I know its slipping, and hoping it may slip on the water pump too, just hoping though. Good Luck man