Re-power GB32 with a John Deere 6414?

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Re-power GB32 with a John Deere 6414?

Postby Keijo Isomaa » Tue Sep 17, 2019 10:29 am

I have made several posts relating to my need to re-power my GB32, 1966 hull #17. I thought I had settled on a John Deere 4045 engine. I can't find anything other than brand new which is very expensive. I just came across a re-built John Deere 6414 NA 135 hp engine at a reasonable price. Does anyone have any experience with this engine in a GB?

(I also came across a re-built 1981 Perkins 4 - 236 Diesel 85 hp. I think this engine doesn't have the power I need but I'd be interested in some comments on it.)

Thanks,

Keijo
Keijo and Susan
"Haven"
1966 Grand Banks 32 #17
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Re: Re-power GB32 with a John Deere 6414?

Postby Berger » Tue Sep 17, 2019 11:49 am

Parts for the Perkins are expensive.
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Re: Re-power GB32 with a John Deere 6414?

Postby Nobby » Tue Sep 17, 2019 12:24 pm

Lugger cemented their reputation on the use of 'Tractor Engines' from the likes of John Deere. The 6414 a crossflow engine was used extensively back in the day across JD's agricultural range and is known as a multiple 10k hr unit with a great track record, i've seen 40,000 listed and claims higher than that. More than a match for the venerable Lehman. They were used in Nordhavns and you'll find good reports on them.

If you are considering a 4 banger Perkins then why not simply a rebuilt Lehman?

Cheers
Nobby
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Re: Re-power GB32 with a John Deere 6414?

Postby Keijo Isomaa » Tue Sep 17, 2019 12:56 pm

I'm not sure I am considering the Perkins. I just became aware of it today. At 85 hp it seems just on the edge of enough. Not clear if it has balancing shafts (as does the JD 4045) and if not is it as noisy and rough as the Cummins 4BT I first considered. Just doing due diligence.
There is a Lehman 120 out there I'm considering. I would have it re-built but I'm told by American Diesel that pistons, as of this year, are no longer available. We want to keep the boat for another 10 to 15 years and at that point a 60+ year old engine with parts unavailable may make the boat very difficult to sell (not that I would expect to get much for it).
Keijo and Susan

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1966 Grand Banks 32 #17
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Re: Re-power GB32 with a John Deere 6414?

Postby Imaginethat » Wed Sep 18, 2019 9:38 pm

I put a Perkins 4-236 in my 39,000 lb 44' sailboat and loved it. I'd bought a pair that were taken out of a trawler after one threw a rod so had lots of spare parts, and new parts were easily available throught the local marine diesel shop. I didn't have a single problem with in in 2 years cruising from the PWN to New Zealand. It didn't leak or burn oil, which still looked like new at oil changes... as for power, if your not trying to exceed hull speed, 85hp seems fine to me to push around a 32. I could make headway into 50+kn wind no problem. One advantage of a 4 cyl is more space in the engine room.

That said, I also have a 4cyl 70hp JD tractor and twin Ammarine/JD 404's in my 36 classic and can't say anything bad about them either. Parts availability is fantastic at the local tractor shop or online. I'd even trade them for a pair of 85hp Perkins if someone made the offer, if only to gain more space in the engine room.

(I might be interested in the 4-236 for another sailboat I've got my eye on and if someone wants to take my GB36 off my hands soon. The sailboat currently has a Perkins 4-156 (62hp) which IS too small for a 52 footer.)

-Pete
1974 GB 36 Classic #467 "Imagine That"
Bellingham, WA
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