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Old 09-12-2013, 13:19   #16
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Re: Look what stopped my Yanmar

Once had a fuel starvation problem on a speedboat. Took a year to find it as it was sometimes 2 months before the problem surfaced. Turned out to be a blob of transparent silicon would make it to the outlet pipe once in a while. Found it by chance floating near the filler cap one day!
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Old 09-12-2013, 14:15   #17
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Re: Look what stopped my Yanmar

I was lucky with this boat - the PO was really lazy so most of the problems stem from 7 years of neglect rather than moron modifications - and the PO to him built the bloody boat and built it really well, as well as, I assume, maintaining it too.
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Old 09-12-2013, 14:43   #18
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Originally Posted by R2boat View Post
This S.S. nut found its way into my Westerbeke, causing the piston to crack...you can see where it was found 'welded' to the cracked aluminum piston...so where do it come from? Westerbeke used a piece of threaded rod to attach the air cleaner, I can only suspect it came off the inboard end of that rod...on several occasions the air cleaner has vibrated off and was found lying beside the engine...
I'm astonished at how lucky you were, I've only seen FOD in a couple of piston engines, and in all cases it tried going out through the exhaust valve, wedged the exh valve open, piston came up and broke the head of the valve off, destroying both the head and the cylinder block. Weren't wet sleeve engines
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Old 09-12-2013, 14:53   #19
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Re: Look what stopped my Yanmar

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Originally Posted by Wainui View Post
It went well until the 110hp yanmar stripped the gears in the 50hp saildrive but that is another story.
That drive is only rated for a 75hp engine. Was it a special one?

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Old 28-01-2014, 13:12   #20
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Re: Look what stopped my Yanmar

It was the largest unit available at the time. Imagine being in a carbon fiber sled with the noise from the saildrive gearbox slowly loosing teeth.
No wind and ended getting towed from of Ensenada to SD. 28knts going down and 3 knts coming back.
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