intake exhaust manifold

[tefsearch]

I have a 1991 GM 3.0L engine. What is the correct way to have the manifold checked for possible cracks. I can't see any cracks but is it possible that it can be cracked inside where it can't be seen. Appreciate any help. Thanks

 

[Reel Poor]

Re: intake exhaust manifold

I can't see any cracks but is it possible that it can be cracked inside where it can't be seen.

Yes it's possible. If your boating in salt water and that's the original manifold do yourself a favor and replace it. Five years on a salt water manifold is a good life.

 

[Dryon]

Re: intake exhaust manifold

Intake or exhaust? Two different manifolds....how do you know which one he is talking about?

 

[JustJason]

Re: intake exhaust manifold

Intake or exhaust? Two different manifolds....how do you know which one he is talking about?

3.0 only has 1 manifold

 

[Bondo]

Re: intake exhaust manifold

I have a 1991 GM 3.0L engine. What is the correct way to have the manifold checked for possible cracks. I can't see any cracks but is it possible that it can be cracked inside where it can't be seen. Appreciate any help. Thanks

Ayuh,....... Freeze Damage possibly,..??

Just fashion up a way to Block Off the Cooling system passages,+ Add Air.....
Compressed Air on the Water side at 10/ 15lbs.,+ you'll Hear the Leak,.... If there Is 1.....

 

[tefsearch]

Re: intake exhaust manifold

Thanks for the help.