Leaking engine block

[jhdeval]

My block has started leaking antifreeze. I know this is coming from the studs mounting the exhaust and intake. Do I need to replace the studs? If so where can I get them? If not what other option do I have?

 

[Divenut]

I believe the end (outside) exhaust studs/bolts need to be installed with hi-temp thread compound to prevent leaks. (At least on the 340's) As a rule, when pulling out old exhaust fasteners, I replace them with new, high quality hardware.

Pat

 

[mcnoople]

I believe the end (outside) exhaust studs/bolts need to be installed with hi-temp thread compound to prevent leaks.

+1

High temp thread sealant is what you need