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Old 10-29-2015, 11:56 PM   #21
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Speaking of Gardner...

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Old 10-30-2015, 12:20 AM   #22
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Hi Oscar,

+ 1 for boatdiesel. They get our $25 each year, paid-with-pleasure.

Take your time and pour through this site, you will learn a lot. Well, I did anyway.

When looking at engines, remember to look out for their RATING. Deere's are rated; M1, M2, etc. Others perhaps, Continuous Duty, Heavy Duty, Pleasure Duty, etc. Each manufacturer will have different ratings for their engines - to suit the way you use your boat,,, displacement, semi-displacement, planing, etc. and also take into consideration how many hours per year you expect to use the engine. These ratings are also associated to RPM's.

For example;

CUMMINS QSL-9

This is a fantastic engine, 6 Cylinders, 8.90 Litres capacity, Turbocharged & Aftercooled. It has 10 possible "Ratings". 2 are listed below:

CON-Continuous Duty @ 280 HP 31.5 HP/Liter @1800 rpm

HO-High Output @ 405 HP 45.5 HP/Liter @2100 rpm

same engine, different rating to suit your boating specifics.
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Old 10-30-2015, 01:33 AM   #23
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David Pascoe's "Mid Size Power Boats" has quite a bit of opinion on diesels. I like his writing, others have been critical.


Keith
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Old 10-30-2015, 02:01 AM   #24
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Speaking of Gardner...


2 for sale in Australia
Gardner marine diesel | Boat Accessories & Parts | Gumtree Australia Fraser Coast - River Heads | 1092480541


6LX/LXB GARDNER DIESEL ENGINES & PARTS | Boat Accessories & Parts | Gumtree Australia Tweed Heads Area - Tweed Heads 2485 | 1066396244
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Old 10-30-2015, 02:46 AM   #25
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Speaking of Gardner...


492,

nice engine!! Is that going in your new Duck?


.
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Old 10-30-2015, 04:36 AM   #26
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No mention of VOLVO and I concur with that decision. They offer the worst customer service in the industry and do not support older engines. I just priced a valve cover gasket, and they want $80..00 for it, if available. Cat or Cummins beats VOLVO every time when it comes to availability and cost of repair parts.
I'd tend to agree about Volvo's. Had a couple and the parts are very expensive if you can get them. I've had a couple of Cats to and have to say there customer service here in Australia was atrocious. Never heard a bad thing about Cummins.

That's a pretty looking Gardner.
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Old 10-30-2015, 07:37 AM   #27
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Thanks Dave for that diesel engine primer, I learned something.
Now I'm really happy my Cummins B series are all mechanical.
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Old 10-30-2015, 07:39 AM   #28
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"David Pascoe's "Mid Size Power Boats" has quite a bit of opinion on diesels. I like his writing, others have been critical."

Mostly because they own a boat he pans.

He has little love for entry level built TT of old.
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Old 10-30-2015, 07:50 AM   #29
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David Pascoe's "Mid Size Power Boats" has quite a bit of opinion on diesels. I like his writing, others have been critical. Keith
Is Pascoe still around? I seem to remember he peaked about when Cat was making the 3116. His anecdotal engine writings seemed short on facts and long on generalizations. Seldom did he mention the need for correct propping on larger planing vessels and how overloading could crater an otherwise good engine.

Critical or not, his surveying activities were enhanced by his books. Marketing 101 at work.
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Old 10-30-2015, 09:53 AM   #30
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492,

nice engine!! Is that going in your new Duck?.
Unfortunately no. This particular Gardner engine is going into another Duck currently under construction at SHM. The good news is I still have time to decide if I want to go with a Gardner or the standard JD 4045.
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Old 10-30-2015, 10:07 AM   #31
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Oscar: My personal experience and those of several friends is that the Cummins 5.9 and 8.3l mechanical engines in the years you are considering are hard to beat. Great support, simple inline 6 design that seems designed for rugged use in trucks etc.


If I were to buy another boat Cummins would be my first choice. Again though you need to get an engine strong enough in displacement, not just HP, to properly power your boat the way you intend to operate it.
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Old 10-30-2015, 11:06 AM   #32
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Is Pascoe still around? I seem to remember he peaked about when Cat was making the 3116. His anecdotal engine writings seemed short on facts and long on generalizations. Seldom did he mention the need for correct propping on larger planing vessels and how overloading could crater an otherwise good engine.
I've read his stuff about diesels rarely lasting more than 1,500-2,000 hours or some such. Seems like many of the situations he describes might be due to poor maintenance, overpropping, poor matching of engine to boat or desired speed, running at too high power levels, etc.

Just for one counter example, my Volvo KAD44P, an electronic supercharged and turbocharged 260 hp at 3800 RPM from 3.6 liters (72 hp/liter - HORRORS!), is still chugging away in fine shape after 17 years and 6500 hours, with regular maintenance and only very moderate (except for the stendrive) repairs, mostly (except for the sterndrive) done by me - only a moderately decent mechanic.

It has given me the far greater fuel economy (vs gas), and thus range on a tank, that my cruising needed. And the longevity I wanted.

Very early on, thanks to Volvo's regional tech wizards and boatdiesel.com, I learned to calibrate the tach, prop it to 3850 RPM at WOT, not cruise too close to WOT, and take very good care of belts and sterndrive. And after the first 2000 hours or so, I switched from running 17-18 knots and 3300-3400 RPM to a very pleasant 6 knots and 1400 RPM most of the time. So I haven't worked it as hard as I might have, but I'm happy with it.

P.S. If I had my druthers I'd still pick Cummins.
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Old 10-30-2015, 11:55 AM   #33
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Boatdiesel.com is a great trove of info. Cheap at 25 bucks a year.http://boatdiesel.com/
George;
Is that a calendar year or 12 mo. from subscription date?
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Old 10-30-2015, 12:06 PM   #34
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12 mo from subscription date. In fact, if you renew before the 12 mo is out, they add another 2 months.
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Old 10-30-2015, 12:12 PM   #35
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12 mo from subscription date. In fact, if you renew before the 12 mo is out, they add another 2 months.
Thanks Richard.
I couldn't find that on the site.
Early Xmas present coming.
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