Manifold Question

[mfd2698]

I have a Yamaha stern drive with a GM 3.0 L4 engine, I am getting water in the oil and on the plugs. I replaced the head gasket and manifolg gasket this weekend and still have t he problem. Pulled the plugs out, cranked the engine and water shot out of all four cylinders. I am thinking the manifold is cracked but as everyone knows Yamaha does not make the manifold anymore. I think I found a match with a Mercruiser, my question is will the Mercruiser manifold work?
Any help will be greatly appreciated, I have been wworking on this for over a year and think this will be the final fix.

Thanks

 

[Bondo]

Re: Manifold Question

I think I found a match with a Mercruiser, my question is will the Mercruiser manifold work?

Ayuh,... Try it, 'n come back 'n tell Us how it works out...

 

[ricovw]

Re: Manifold Question

I think it would probably work. It is the same block that mercruiser used in that same era. Its just making everything else that goes on work. Like carb and riser.

 

[mfd2698]

Re: Manifold Question

I think it would probably work. It is the same block that mercruiser used in that same era. Its just making everything else that goes on work. Like carb and riser.

Thanks... If the carb I have does not fit can I use a merc carb?

 

[ricovw]

Re: Manifold Question

i would think so, but there are guys on this forum that may know better. It is the same motor, just marinized by different companies like mercruiser or yamaha.