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Old 12-10-2014, 06:14 PM   #1
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Cummins vs John Deere.....

Boats, like cars, have evolved and improved over the last 30 years. The faithful IG36 with Lehmans, though not getting any younger, is largely where I want it after 4 years owned. Staying with the trawler concept, my thoughts turn to a modern version. Here, the essential options are Integrity, Clipper (like MT), Mainship, Alaska, (last 2 much higher powered than first 2), and maybe Beneteau Swift. The old IG still has most features,some better than newer boats. Like trading twins for single, typically coming with thrusters both ends. That`s my threshold question to mull. Especially as it likely involves $250K changeover.
What I`m wondering. Integrity has gone from fitting Cummins 220hp to John Deere 225hp. Clipper still fits Cummins, incl Diamond series, some are 270hp from memory, and there are used single and twin versions.
Without starting a Ford vs GM type debate, is one preferable, or(as I`m thinking) are both good things to have in the ER?
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Old 12-10-2014, 06:20 PM   #2
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I think both JD and Cummins make first class engines. But if I were repowering I would buy the essentially brand new factory reconned Cummins B engine (in hps from 210 to 370) at about half of a new Cummins QSB or equivalent JD.

David
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Old 12-10-2014, 06:26 PM   #3
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I think both JD and Cummins make first class engines. But if I were repowering I would buy the essentially brand new factory reconned Cummins B engine (in hps from 210 to 370) at about half of a new Cummins QSB or equivalent JD.

David
Yup.

Excellent support worldwide, from both the factory and the aftermarket, make the Cummins the obvious choice for me.
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Old 12-10-2014, 06:28 PM   #4
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Originally Posted by djmarchand View Post
I think both JD and Cummins make first class engines. But if I were repowering I would buy the essentially brand new factory reconned Cummins B engine (in hps from 210 to 370) at about half of a new Cummins QSB or equivalent JD.

David
Thats exactly what I did for my repower.
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Old 12-10-2014, 07:13 PM   #5
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To the extent there are differences, I think it's more due to application than anything else. My totally unscientific take is that the Cummins get run at higher output levels, and get built into boats with marginally designed sea water systems. The result, quite predictably, is problems.

Deere's on the other hand, seem to be used in lower output applications in boats with more thoughtful installation designs. And few problems arise. On BoatDiesel.com, Deere's almost never come up for discussion.

So I would agree with Dave that both are excellent engines, and success depends much more on proper operation, installation, and maintenance.
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Old 12-10-2014, 09:17 PM   #6
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To the extent there are differences, I think it's more due to application than anything else. My totally unscientific take is that the Cummins get run at higher output levels, and get built into boats with marginally designed sea water systems. The result, quite predictably, is problems.

Deere's on the other hand, seem to be used in lower output applications in boats with more thoughtful installation designs. And few problems arise. On BoatDiesel.com, Deere's almost never come up for discussion.

So I would agree with Dave that both are excellent engines, and success depends much more on proper operation, installation, and maintenance.
100% agree! I consider myself a Cummins man having owned 4 of their engines. When considering options for my Cherubini repower I naturally considered a 4BT recon as an option. While the 4BT was a decent option, it clearly doesn't enjoy the reputation that it's big brother the 6BT has. Also it was never really adopted by the trawler manufactures. In this size range the JD 4045 clearly owned the market between these 2 manufacturers. The 4045 is considered a much smoother (less vibration) running engine with better fuel economy and great trouble free life expectancy.

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Old 12-15-2014, 12:12 AM   #7
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Deere
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Old 12-15-2014, 03:32 AM   #8
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My JD4045 runs smoother than my friends' non-JD engines.
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Old 12-15-2014, 08:36 AM   #9
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About how much would a re man 370 be still in the crate?
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Old 12-15-2014, 08:48 AM   #10
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Seams like the 370 hp version was the problem child when ran at that level of output for any length of time. The 330 didnt have as many problems, even tho it was basically the same engine. The 210, 250, etc (non aftercooled) were GREAT engines. The 4BT tended to shake like a dog $hittin a peach seed, especially at idle. But, the B and C series both shook a bit.
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Old 12-15-2014, 09:31 AM   #11
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About how much would a re man 370 be still in the crate?
In 2011 they were $19,000 each.

Only about a thousand more than the 330's I bought.

In my opinion 370 HP is too much for the 6B block. The 330 does great but it does great, again in my opinion in a situation where you generally run at low power settings and occasionally run at higher power settings.
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Old 12-15-2014, 11:38 AM   #12
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I had a 330 on my Nordic Tug and now have two 370's on the Albin. All good so far.
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Old 12-15-2014, 10:01 PM   #13
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How are the local dealers in Australia? I know Deere has good dealers in the Ag industry, we used to work with several in the Sugar Cane industry. How about Cummins?
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Old 12-15-2014, 10:12 PM   #14
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A search suggests Cummins have Australia wide marine service. Are Onan part of Cummins, I think I remember ordering a start solenoid from them in Adelaide, South Aust, they were quick to respond.
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Old 12-16-2014, 01:34 AM   #15
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Why not get one of each?
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Old 12-16-2014, 05:38 AM   #16
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Why not get one of each?
I`ll call Integrity! They`ll welcome the challenge with their single engine designed boat.
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Old 12-16-2014, 09:03 AM   #17
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A search suggests Cummins have Australia wide marine service. Are Onan part of Cummins, I think I remember ordering a start solenoid from them in Adelaide, South Aust, they were quick to respond.
Cummins bought Onan several?? years ago. Seems like a good fit.
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