Leaking coolant, not sure where

[Quasimondo]

Engine is recently rebuilt w/ 2g pistons. Head and block were machined and sealed w/ cometic gasket & arp studs. After break-in, I've noticed i had a small coolant leak. I thought it might be from the HG not properly sealing because I'm seeing coolant under the exhaust manifold, but in the 200 miles that I've driven it hard, it hasn't overheated, there is no white smoke, and the puke tank is still full. The only other thing I can think of is that maybe the hose for the water pipe is leaking and shooting coolant onto the block. Just wondering what you guys think of this...

*Edit* Forgot to mention that I checked the oil and coolant for signs of contamination and found none.

 

[dalatinromeo]

Did you check your radiator, and hoses. Also your return lines coming off the turbo. My buddy blew one of his water lines and is now leaking coolant. So I would say check your radiator end tanks, hoses, and return lines. Let us know if you find the leak!!

 

[justin0469]

can you hear a hissing at all after you drive for awhile and turn off the car? if so, try to follow the sound.

 

[Quasimondo]

It looks like it was coming from the head gasket. I retorqued the head bolts, refilled the radiator from any lost coolant and took the car out for a test run. Lots of boosting, lots of idling, more boosting, more idling, when I shut the engine off, no hissing, no bubbling, looks like the problem is solved. I still have to change the thermostat since it doesn't open up until engine temps are around 210*.