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post #1 of 17 Old 01-09-2017 Thread Starter
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Engine Replacement

Good afternoon everyone...

I am looking for input, advice, information from anyone with experience in replacing the engine in their sailboat. I do not have a deep understanding of this and am looking to learn as I go.

I currently have a 31' Niagara sailboat which I love and want to keep long term. It has a Volvo Md7a engine and a Volvo 110s Saildrive. Long story short, the Md7a is done....over....shall run no more.

The mechanics that I had been talking to this summer said that I could replace the engine AND quite possibly keep the Saildrive, even if I were to switch engine brands. They asked me do do some research into what I wanted and see what I thought would work for me.

I don't seem to be able to find anything on the internet about integrating a new engine and the existing saildrive. I can't find any information about what to look for, how to tell if I can mix brands (ie. Yanmar and Volvo) and what characteristics of which components will work with others.

Can someone point me in the direction of some resources that I could use to get a better understanding of what I need to know?

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post #2 of 17 Old 01-09-2017
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Re: Engine Replacement

Did you consider getting a used/rebuilt MD7A? Volvo Penta MD7A Diesel Engine - DieselEngineMotor.Com

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post #3 of 17 Old 01-09-2017
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Re: Engine Replacement

Personally, I wouldn't buy a boat with a WORKING Volvo...

If looking to repower, my first choice would be a Beta Marine, Beta 25, which is available with a saildrive;


The Beta 20 would be my second.

You can learn more here: http://www.betamarinenc.com/engines/
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Last edited by eherlihy; 01-09-2017 at 03:11 PM.
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post #4 of 17 Old 01-09-2017
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Re: Engine Replacement

The Betas seem pretty sweet to me.
Complete with trannies, if desired.
They seem very upfront and will give you pricing, explaining what IS included and what IS NOT.
A 25 would be a good fit and you'll probably lose 200 lbs in weight when it's all over.
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post #5 of 17 Old 01-09-2017
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Talking Re: Engine Replacement

Read this from betamarine http://betamarine.co.uk/wp-content/u...Guidelines.pdf
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post #6 of 17 Old 01-09-2017
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Re: Engine Replacement

WOW! 31' boat, 8K lbs! (I thought it would be much more) and a 13 HP engine...

I would now opt for the Beta 20 as my first choice... Beta 16 as my second.
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post #7 of 17 Old 01-09-2017
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Re: Engine Replacement

Quote:
Originally Posted by eherlihy View Post
WOW! 31' boat, 8K lbs! (I thought it would be much more) and a 13 HP engine...

I would now opt for the Beta 20 as my first choice... Beta 16 as my second.
Yeah.
SA/D is over 19
Had no idea.
The Niagara 35 is around 15k lbs
Very different boat.
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post #8 of 17 Old 01-09-2017
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Re: Engine Replacement

Have you contacted the engine manufatuer or distributer? When I have a technical question of this type, I try and go to the information source. For example, I read the PDF that Knute posted. Very good information. I'd next call Beta Marine and ask a technician for their input into my specific situation. Good luck.

By the way, for a personal opinion, after spending so much money on a new engine, I'd want the security of a warrantee on that tranny/saildrive. I'd go new.
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post #9 of 17 Old 01-09-2017
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Re: Engine Replacement

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Originally Posted by Scotty C-M View Post
..... I'd go new.
After you swallow the biggy expense and get the fitting bugs worked out, that is something you take remove from your worry bag for a very long time.
I like to keep my bag as light as possible...
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post #10 of 17 Old 01-13-2017
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Re: Engine Replacement

Quote:
Originally Posted by Scotty C-M View Post
By the way, for a personal opinion, after spending so much money on a new engine, I'd want the security of a warrantee on that tranny/saildrive. I'd go new.
I'd be with Scotty on this!

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