Coolant bubbles out of my exp. tank after hard driving

[keelhaul]

hey there.

i was driving my car to a repair shop last evening. my clutch is all worn out so i was very often up in the 7k rpm range to get it moving

when i came to the shop, after letting the car idle a bit to cool down, i shut it off, and steam came out of my exp. tank. not from the cap on the lid, but from where the lid meets the bottom of the exp. tank. i have a tank that looks like this http://cgi.ebay.co.uk/Subaru-Impreza-Ex ... 335ea71b5b

what do you think this can be? the repair dude is also going to install a new water pump and timing belt for me. i hope its not the head gasket. but my car didnt overheat when driving it. it mustve been pretty hot in the motor.

[keelhaul]

perhaps my tank is just old and tired, and couldnt hold pressure anymore, since it didnt come out of the cap, but where the lid and bottom meet

[BoostedSubie]

If i'm understanding you right, you mean the top of the tank that bolts to the bowl part of the tank? I've never unbolted the top of mine but i suspect there is probably a gasket or at least silicone that seals the two halves together. So if bubbles are coming out of it, take it apart, clean it, and reseal it.

[bry]

yes, radiator cap should be first to blow off pressure. if cap is good, then tank needs resealed.

[BoostedSubie]

Yeah, that much heat over years will lead to that.

[keelhaul]

okay, thank you guys