Blown Head Gasket — Bubbling.

[78F350]

While you wait for someone who knows more than me to reply, check out Hoffman Machine's web page. There's some good info about cracked heads and repairs. https://hamheads.com/2017/01/16/986-996-porsche-cylinderhead-cracks-explained/

I'm not saying it's not the head gasket. I just know that cracked heads are a much more common cause in these cars.

[Trudant]

Originally Posted by 78F350

While you wait for someone who knows more than me to reply, check out Hoffman Machine's web page. There's some good info about cracked heads and repairs. https://hamheads.com/2017/01/16/986-996-porsche-cylinderhead-cracks-explained/

I'm not saying it's not the head gasket. I just know that cracked heads are a much more common cause in these cars.

Totally agree. Head gaskets usually don't leak on these cars. That said... this one is?!

I've done my homework... and I can convince myself that several scenarios are possible:
1. Did something crack and then loosen things up enough to create a head gasket leak?
2. Could the head gasket leak have reduced pressure and prevented a crack from forming?


Trying to figure out the best path to a solution. May contact Hoffman and see what they say if there is no great suggestions here!

[Gilles]

Originally Posted by Trudant

May contact Hoffman and see what they say if there is no great suggestions here!

Les Hoffmann is a sure path, he would be able to properly inspect your head (and repair it) if you have a crack.