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post #11 of 14 Old 08-20-2019
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Re: re-powering 1988 Sabre 36?

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Originally Posted by eherlihy View Post
Good point about the sacrificial anodes. I try to check them every month. I just replaced the one in my heat exchanger anode after 3 months of use. This particular pencil anode had corroded in the middle. I guess that there was some kind of mould release agent on it that prevented it from wearing from the end.

Here's what it looked like:

Old on top
New on bottom
Interesting wear, the ones I buy are too long, I cut the end off to be sure they don't bottom out. I'll be looking for that.
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post #12 of 14 Old 08-20-2019
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Re: re-powering 1988 Sabre 36?

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Originally Posted by eherlihy View Post
Good point about the sacrificial anodes. I try to check them every month. I just replaced the one in my heat exchanger anode after 3 months of use. This particular pencil anode had corroded in the middle. I guess that there was some kind of mould release agent on it that prevented it from wearing from the end.

Here's what it looked like:

Old on top
New on bottom
The bore/dia and threads are very different, new and old....also straight vs tapered
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post #13 of 14 Old 08-20-2019
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Re: re-powering 1988 Sabre 36?

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Originally Posted by RegisteredUser View Post
The bore/dia and threads are very different, new and old....also straight vs tapered
The zinc top one screws into the bronze piece on the bottom one, which in turn screws into the engine. The zincs are identical!
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post #14 of 14 Old 08-20-2019
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Re: re-powering 1988 Sabre 36?

Our Yanmar 3GF has 8,000 hours and runs perfect well. Just broken in. Good advice for you here from others . Let me add:

Best think is to learn and understand care of a diesel. Mac Boring has a great course on it. There are some basic things we do every year. I consider them preventative maintenance. The are are some items we have done every 2500 hours. Heat exchanger and injectors are in this category. Also not the engine but the exhaust elbow.

I carefully clean the external engine each spring checking wiring harnesses, hoses and clamps . This includes the underside of the engine. A nice cleaning every year goes a long way. I take spring commissioning as the time to clean all intake screens. Inspect the water muffler , especially on older boats with ss / alimunium ones. Check all the clamps too.

Diesels also like to be run. The don’t like short intervals. I look at ours like what you do when exercising. Keep that in mind when coming back from a sail into a mooring or slip. While we practice each year sailing into our slip, our practice is to motor back up our creek u dear load ( 20 minutes) and after docking low idle the engine for 5 minutes.
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