Question for replacing gaskets

[Tyman]

I just bought a 1984 Sea Spirit 18ft boat. It came with a 1984 OMC Stern Drive 3.8L motor. When I bought it, the previous owner said the exhaust gasket needs to be replaced. I plan to do this next month when my schedule opens up, but I want to order everything first. My question is; while I am replacing the exhaust gasket, what other ones should I replace as well? Intake manifold? cylinder head?

**Note** The motor runs, but I want to make sure it will be set for the next few years.

 

[Bondo]

My question is; while I am replacing the exhaust gasket, what other ones should I replace as well?

Ayuh,..... Welcome Aboard,..... I replace only the ones leaking,.....

 

[Tyman]

Any specific reason why you only do the ones leaking instead of doing more than that? I'm use to tractors where we replace all of them at once.

 

[Bondo]

Any specific reason why you only do the ones leaking instead of doing more than that?

Ayuh,..... If the other gaskets ain't leakin', why open that can of worms,.....

When I go in that deep, I just do a full on rebuild, rather than just swappin' gaskets,.....

The gaskets you mention should last the life of the motor,.....

 

[Scott Danforth]

if you have the bat-wing manifolds, plan on replacing them.

 

[Tyman]

Ayuh,..... If the other gaskets ain't leakin', why open that can of worms,.....

When I go in that deep, I just do a full on rebuild, rather than just swappin' gaskets,.....

The gaskets you mention should last the life of the motor,.....

Thank you for that information. I will plan on replacing the once I know I need to and will go from there. Thank you for your help.