anesthes

Check under the heat shields. It seems they all crack just like this. Notice the carbon staining on the inside of the heat shield. These were ticking for a while.


-- Joe

don hall

May help (?): https://itstillruns.com/weld-cracked...d-5642735.html

Had a manifold welded successfully on one of my fish boats. I know, it wasn't a vette, but it was done by a
knowledgable welder..Just had to bring the cast iron up to temp.

81c3

Perfect time to replace them with headers and a nice full exhaust system. Lighter, better looking , sounding and most of all more HP..!!

mtwoolford

Welding cast iron is a real crap shoot. I have had good luck grinding away the crack and using a gas torch and brazing the affected area. But the long term solution is probably going to be a new manifold(s)

anesthes

I've welded plenty of cast turbo manifolds, but I won't bother fixing these.

I just wanted to show members to check your manifolds when out of the car