Brand new head gasket leaking coolant externally

possible maybe the gasket got scratched.

but it seems like there was a thread started couple years back about some bad gaskets too. or something to that effect.

your not the first person.

 

it is old engine, may be head ore cylinder block must be resurfaced, usually head only

 

Have you confirmed it is the head gasket itself, or is there a leak from where else that is trickling down and following the head to block seam and just looking like a head gasket?

 

Did you counter-bore? set liner protrusion?

 

egreed with bubbanbranda about counterbor. Very Important thing, a MUST TO DO thing when you do pistons, sleaves etc.

 

basically your answer is there is no hope other then pulling it and looking
and yes was the head checked machined?


oops missed the new head part

 

not so much liner protrution.(unless it was really screwed up!) could of pinched the o-ring that goes around top if liner when liners were installed if they weren't lubed properly. or one of the water orifices O-rings that was installed in with the headgasket was pinched. if the surface of block where those 0-rings go was (pitted) real bad the O-rings wont seal when you bolt the head down. another thing could be the casting has a pin hole defect in it.(seen that a few times with them.

 

Please post the problem when you tear it down and let us know

 

someone else stated and I cannot say emphatically enough--PLEASE verify WHERE the leak is--actually coming from before you proceed--Might just save you a lot of grief--fluids do strange things--and go to/from all kind of places