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Old 29-08-2007, 09:15   #1
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Sabre 28 Repower

I am looking to remove my Atomic 4 and replace it with a new Diesel. Any thoughts on which engine (including size) would be the best replacement for the Sabre 28+atomic 4? Universal, yanmar, westerbeke, betamarine?

Any recomendations on where to go to get a good deal? Do I have to wait for a boat show to get discounted prices?

Has anyone repowerd the Sabre 28?.
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Old 29-08-2007, 10:28   #2
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Universal M3-20. Yanmars are too big to do the job without rebuilding the beds. I won't comment on Beta. Westerbeke also is a bit on the large size.
That boat doesn'
t require alot of power to move it so 20hp should be just right.
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Old 29-08-2007, 15:19   #3
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My boat had the AtomBomb to Yanmar 2GMF conversion already completed when I bought it. Other than the large angle iron between the beds and the motor mounts what else needs to be done? Or it that a Sabre specific requirement.
In any case the motor pushed the boat at hull speed without too much trouble.
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Old 29-08-2007, 15:50   #4
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PV,
Your Yanmar is only 13hp to boot.
Most often the AT4 was mountd directly to the stringers. This caused the inside dimension of the stringers to be <11". The KM2/GM/YM bell housing is 12" dia. once you factor shaft alignment and needed drop of the engine, the bell housing won't fit between the stringers.
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Old 29-08-2007, 16:08   #5
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Pat,
Thanks, yea, she's a little motor but she sure is a sweet running old girl. I'll take a look at the bell housing the next time I'm down. I've never compared my install and the install on the A4s in the fleet. That will be interesting. Not too long ago a member of the class up in Quebec put a 3YM in his boat. He's bound for the Bahamas and wanted the extra ponies but frankly I think it might be overkill on a boat around 6000 pounds. I don't know how much surgery he had to do.

Reflecting on it, I would guess that the C&C27 and Sabre 28 have more in common than they have differences. One advantage of my motor is that it is roughly 100 lbs lighter than the A4, but frankly if I had an A4 I would seriously consider keeping it for simple marina work.

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Old 29-08-2007, 16:08   #6
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Pat,
Thanks, yea, she's a little motor but she sure is a sweet running old girl. I'll take a look at the bell housing the next time I'm down. I've never compared my install and the install on the A4s in the fleet. That will be interesting. Not too long ago a member of the class up in Quebec put a 3YM in his boat. He's bound for the Bahamas and wanted the extra ponies but frankly I think it might be overkill on a boat around 6000 pounds. I don't know how much surgery he had to do.

Reflecting on it, I would guess that the C&C27 and Sabre 28 have more in common than they have differences. One advantage of my motor is that it is roughly 100 lbs lighter than the A4, but frankly if I had an A4 I would seriously consider keeping it for simple marina work.

pv
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Old 31-08-2007, 03:24   #7
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You might contact:
Sabre Technical Support:
Technical Support for Sabre yachts built by Sabre Yachts in Maine, USA
Sabre Corporation
Hawthorne Road, Box 134 South Casco, ME 04077
Tel: 207.655.3831
Fax: 207.655.5050

Sabre Yacht Owners Associations:
http://www.sabreyachts.com/pdf/owners_associations.pdf

howie@midmaine.com wrote at Tartan Owners Forums :
”We recently did a repower of a Sabre 28 with a rebuilt A-4 from Moyer. It was a good package and ran great. But if you do the math and want to run a high output alternator for charging batteries, the A-4 will be running with it's little tongue dragging on the ground and with little or no reserve. Admittedly, the diesel repower was a challenge, but I'd do it again for the 34C.”
howie@midmaine.com
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Old 31-08-2007, 08:53   #8
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In one, if not several, of the mags I read I've come across an ad from a company that advertises a direct replacement diesel for the Atomic 4. Can't come close to remembering the name, but I'm sure an internet search will yield the answer.

good luck
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Old 31-08-2007, 11:28   #9
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Originally Posted by rtbates View Post
In one, if not several, of the mags I read I've come across an ad from a company that advertises a direct replacement diesel for the Atomic 4. Can't come close to remembering the name, but I'm sure an internet search will yield the answer.

good luck
Both Universal and Beta offer such engines.
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Old 04-02-2011, 07:52   #10
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I have a 1979 Sabre 28. Volvo Penta 13hp Engine is tired. Yard wants $5K to replace it with a rebuild.
Has anyone done an outboard conversion?
The Volvo is ok at low RPM around the harbor, but I don't trust it, if it is needed on a long trip.

Sabre Rich
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Old 08-02-2011, 13:32   #11
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Ian, I like the beta, 14 hp perfect for you. I believe, my beta was shipped from NC, somewhere by you. Great dealer support, smaller lighter, quiet, I have mine 2 yrs and love it. My best friend has a sabre 28, he pulled his volvo MD13, had cooling issues, cleaned it up and its great. Its like buying a car, look around, ask questions, and make your decision. Are you doing this job yourself? Red
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