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Old 02-04-2019, 10:37 AM   #19
Seevee
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City: st pete
Vessel Model: 430 Mainship
Join Date: Sep 2016
Posts: 3,502
For the Mainship, I rank the engines in the following:
Yanmar
Cummins
Cat

As a disclaimer, I've only owned Yanmar, but they are well made, bullet proof and easy to maintain. And I have a top notch dealer/distributer locally whose generous with good info as well as parts, etc.

I have a LOT of friends with the Cummins in their Mainships, and I could rank it as an equal to the Yanmar. I think you could flip a coin and be happy with either.

I've had friends with Cats, but in different boats, and no big issues there either..... and certainly not a distant third, but very close to the others.

Would agree with the comments that it probably makes more of a difference with the way the engine has been maintained, not the brand.

However, Volvo does seem to have issues. I've had a few with issues and friends with issues and occasionally had some friends that were grounded for months because they couldn't get parts (and they were expensive).
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