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Master Tech
Master Tech, Marine Technician
Category: Boat
Satisfied Customers: 1168
Experience:  Evinrude Master Technician with 30 years of experience.
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I would like to know if a mercruiser 180 hp 4 cylinder has

Customer Question

I would like to know if a mercruiser 180 hp 4 cylinder has an aluminum block or any problems.
Submitted: 7 years ago.
Category: Boat
Expert:  Master Tech replied 7 years ago.

The only Mercruiser 4cyl in that hp range is the model 470. It is a Mercruiser designed and cast aluminum engine block with a 460 Ford cyl head. It has been out of production for over 20 years now.


IThey had several troublesome issues.


The riser gaskets can fail, and the manifold also has issues with core shift. Both can cause anti-freeze to enter the engine oil and contaminate it causing engine damage


It is an old technology engine, very noisy and less than desireable in my humble oppinion.


Good luck in your decision.



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Customer: replied 7 years ago.




Thank you verry much that info. helped me make a very important decision.

Expert:  Master Tech replied 7 years ago.
You are very welcome.

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