When to change manifold gasket

[Navy Diams]

Hi guys,

I own a 350 Penta inboard. The manifold gasket was changed 4 seasons ago. My boat is in salt water but get flushed with fresh water after each ride so no salt water is sitting in the system while not in use. Can someone tell me when it is time to change the gasket. I know people say that the gasket last forever in fresh water while it needs regular replacement when used in salt water....... Any ideas ?

 

[Don S]

Re: When to change manifold gasket

Keep one thing in mind, the manifold to head gasket is not the problem. It's the gasket between manifold and riser that causes the problem, and it's really not the gaskets fault that causes the leaks. What happens is the gasket surface on the manifold and riser corrode away from salt and heat. After 5 years in salt water, it's a good idea to inspect yearly to see that you have plenty of gasket surface between the water passages and the exhaust passages.

 

[Navy Diams]

Re: When to change manifold gasket

Hi,

Your prompt attention is very much appreciated. Thanks.