Yanmar 75hp and 100hp exhaust elbow

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DickTuschick
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Yanmar 75hp and 100hp exhaust elbow

Post by DickTuschick » Wed Dec 10, 2014 10:55 am

Hello to all,
A word of caution to all 75hp and 100hp owners.
As engines age there is one component at is due to fail...the exhaust elbow...

The exhaust elbow on all engines will fail at some point due to corrosion. A visual inspection on a regular basis will indicate a failure that will progress rapidly if not addressed. New Stainless steel replacements are available on Ebay for $270. (12/10/2014). Water and exhaust fume damage to the engine can be extensive if not caught early.

teamwork
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Re: Yanmar 75hp and 100hp exhaust elbow

Post by teamwork » Thu Dec 11, 2014 9:42 am

Hi all, I've been through engine exhaust elbow failure also. I got the latest generation from a Yanmar dealer. I think they were close to $400.00 range each. They had extra supports welded on where mine failed. While you are inspecting, check ALL exhaust clamps, the factory ones are not a good grade stainless. They only fail in Gulf Stream.
Roger on Teamwork

SHINNDIG
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Re: Yanmar 75hp and 100hp exhaust elbow

Post by SHINNDIG » Sun May 15, 2016 11:31 am

Does anyone have any history with the e-bay replacement Exhaust Elbows? I just had my second one fail on the same engine - probably about 500 hrs on it since it was replaced with a new Yanmar part. Seems like trying the e-bay substitute (now $285 including freight) is a no brainer. Just checked the Yanmar replacement which is now priced at $705. Seems to me that this is a Yanmar design failure - I've never replaced an exhaust elbow on any of my many boats over the past 50 years and now this is the second time in four years.

Jerry Shinn
PDQ 34 - 45

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SecondWind
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Re: Yanmar 75hp and 100hp exhaust elbow

Post by SecondWind » Sun May 15, 2016 12:11 pm

The failure isn't limited to the large Yanmars. I replace several on our Yanmar 18 hp engine on our 36 sailboat. The iron used just doesn't hold up well in salt water. I don't know about their life in freshwater, but I suspect it's no better. I wish that I had available a stainless alternative at the time.
Terry Green
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Cat Daddy
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Re: Yanmar 75hp and 100hp exhaust elbow

Post by Cat Daddy » Tue May 17, 2016 11:37 am

Jerry,

I replaced both of mine in December with the ebay elbows. Seem to be a good quality piece, much more substantial than the yanmar parts. The ebay seller was very good to work with, solving a shipping issue quickly. When changing elbows I had to replace all the studs. They all came out easily, you might have replacements on hand just in case.

Rafe
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SHINNDIG
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Re: Yanmar 75hp and 100hp exhaust elbow

Post by SHINNDIG » Tue May 17, 2016 12:41 pm

Thanks for the replies guys - I'm going to weld my leaking one as a spare and try one of the e-bay ones. I had the first one that cracked welded as a spare and it got me home to Marathon from Bimini the other day after the second one started leaking.

Jerry

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