Questions about hooking up a new MerCruiser

[j442w30]

I have a 1988 Maxum bowrider that originally had a 3.0 MerCruiser and I am getting ready to replace it with a new MerCruiser 4.3. I was wondering if there are any differences I should be aware of when it comes to electrical and fuel hookups. The new motor mounts are in place and the drive ratio issue has been taken care of with a new SEI upper.

The old engine used a mechanical fuel pump and the new one has an electric unit as well as the boat currently has a 10 pin connector whereas the new engine uses a 14 pin connector. I found an adaptor that allows the 14 pin connector to work with the 10 pin unit but do I need to make any changes for the electric fuel pump to work?

Also do I need to get gaskets for the exhaust Y pipe or new rear motor mount bolt assemblies for the new engine or does MerCruiser include them with the new engine?

Anything else I should be aware of?

Thanks a lot!

 

[Don S]

Re: Questions about hooking up a new MerCruiser

The old engine used a mechanical fuel pump and the new one has an electric unit as well as the boat currently has a 10 pin connector whereas the new engine uses a 14 pin connector. I found an adaptor that allows the 14 pin connector to work with the 10 pin unit but do I need to make any changes for the electric fuel pump to work?

The adapter harness will take care of that.

Also do I need to get gaskets for the exhaust Y pipe or new rear motor mount bolt assemblies for the new engine or does MerCruiser include them with the new engine?

They include the exhaust tube, you have to get any gaskets and seals.