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Diesel Engine Choice?

3K views 18 replies 12 participants last post by  welder  
#1 ·
A friend of mine needs to re-power an old 36', single engine, heavy displacement, wood lobster boat.
The boat is in Maine and will be used for recreation -- no need to go real fast -- just reliably.
He was given these various diesel engine choices by the service shop .
Price range was comparable for all except the Lugger, which was about twice the cost of the others - ??.

Do any of you folks with a knowledge of marine diesel engines have opinions about these engines ?
Or - point me towards another forum that might be helpful.

Cummins 240hp 6BT210 no gear
Deere 265hp SFM50 #3 gear included
Deere 231hp 6068AFM75 no gear
Volvo 200hp TAMD41 gear included
Volvo 218hp D4-225 no gear
Yanmar 220hp 6BY2-220 gear included
Lugger 185hp L1066A no gear
 
#3 ·
Volvo motors require expensive replacement parts.
I vote Cummins because the parts are readily available anywhere and they cost the least. You can also buy a rebuilt cummins for a good price if you send your spent core in. It comes with a warranty. My .02
 
#5 ·
Cummins and Yanmar (tied) then Volvo - in that order. Excellent motors - the Deere's are good as well however haven't heard too much of them in the way of marinized versions.

Head over to THT (thehulltruth.com) and there's quite a few East Coast lobsterman boats - it's a great forum a lot like 2cool with a lot of 2coolers on it as well.

Sure he doesn't want it to go fast? Granted these are Chesapeake deadrises and not lobster, but still cool boats and similar in design with some pushing 40 to 50 MPH. Most of these are using cummins, yanmar and cat.
 

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#8 ·
Volvo 200hp TAMD41 gear included
I happen to own a pair of those and am convinced they paint them green because they burn money to keep running. I had a Cummings in my Dodge and it never gave me a minute of trouble. If that Volvo has Hurst gears, and he decides on Volvo, he needs someone that knows a lot about transmissions to look it over. Both mine had to be rebuilt within 200 hours of buying the boat and it was 5K each to do that.
 
#15 ·
Ouch was the 1 3/8" shaft it snapped when the first one got bad. The surveyor missed it entirely and I didn't know that sound it was making was out of the ordinary. By the time it was over, it was 2 shafts, 2 cutlass bearings, and pull, rebuild and reinstall 2 trannys, one dive job, both props to Louie B, one tow job and about a month out of the water. All just in time to get hammered by Ike right after I did get it put it back in the water.
 
#10 ·
On the East Coast, cummins and Deere dominate the lobster boat fleets with service and parts readily available. You only have to look at what they're running in the lobster boat races to see what kind of abuse those motors can take and what kind of power they can get from them. You won't find many Yanmars or others than the C.. and D.. motors in contention.
 
#11 ·
I'm not clear on the information you provided. Some engines come with gear and some do not. Do those that do not come with gear reuse the old gear, or is the new gear an extra charge not shown? The answer may change the outcome.

Cummins makes a solid engine, and parts are available from many sources. I think volvo is more popular in certain regions and not in others, making parts and service an issue at times. Deere is good and may or may not be a re-branded Yanmar, but again may be less popular.

Engines are all man made and anything man made can have problems. Make sure that whatever engine is chosen is well supported (parts/service) in the area(s) that the boat will be used in. Also, take note of the fuel consumption and maintenance requirements/costs as some engines may be much more economical than others. Total installed weight may also play a factor in the decision making process. Don't overlook warranty and extended warranty options. While you may not purchase the extra warranty, having the option may be a factor. Some MFG's will allow you to purchase extra warranty anytime up to the conclusion of the factory warranty, allowing you to evaluate your need to purchase additional warranty if you so desire.

I believe that the Lugger is German and the German's make good diesels. You might also want to check into Man Diesels. There are other brands you may wish to check into as well. Some of the imports are lighter and achieve better economy than some of the old big iron mfg's.

Depending on the engine/gear selected, you may need a new wheel as well. Be sure to look at total costs when making comparisons.

Keep us posted as I'd be curious as to how this plays out.

Good Luck.
 
#13 ·
I would recommend that he get a firm written proposal for each engine/gear combo including installation and any extras before he makes a decision. Seems kind of weird that they did not include a gear drive when they know one is needed. Put it all down in an excel spreadsheet and see what works out best.
 
#18 ·
This and cost less. A lot of parts are easily serviceable by an average joe that has limited knowledge as well. So far I've had the pleasure of running and working on Cats, Volvo's, and Cummins. Cummins 4BTA and 6BTA win in a landslide in my opinion on part costs, availability, and actually working on them yourself. Sometimes if you're in a squeeze you can borrow parts off your dodge truck equipped with a cummins to get you on the water. Don't ask how I know...