Yanmar Exhaust Mixer

[awol]

I think I've been lucky! I removed the exhaust pipe from my 2GMF to make access to the gearbox easier and when I lifted it out to drain the water residue the inner pipe from the exhaust bend clattered into the bucket. I've no idea how long it had been detached and I consider myself fortunate that the engine never inhaled from the exhaust.

I think I've solved a mystery as well - the weld round the water inlet to the bend was incomplete and probably the source of the annoying salt water leak (I hope). Over the last 2 seasons I've replaced the stern gland with a Volvo dripless, reseated the anode bolts, reseated the cockpit drain cocks, resealed exhaust and bilge-pump outlets ....

Now all I need to do is spend £143(!) on a new one or wait for Ebay - the 3GM one listed just now won't fit.

 

[KenMcCulloch]

Alastair, they are 'only' £110 here at Marine Power.
which is where I get most of my Yanmar spares

 

[awol]

[ QUOTE ]
Alastair, they are 'only' £110 here at Marine Power.
which is where I get most of my Yanmar spares

[/ QUOTE ]

I wish - 128370-13530 exhaust mixing elbow 2/3GMF's - 3HMF's - 2/3YM's £143.93 - from Marine Power!

 

[richardabeattie]

Awol - how old was your engine exhaust pipe? -you've got me worried!

 

[KenMcCulloch]

Oh bogger, what a price to pay for an extra letter.

 

[awol]

[ QUOTE ]
Awol - how old was your engine exhaust pipe? -you've got me worried!

[/ QUOTE ]

Engine is 25 years young with about 3000 hours - I suspect the offending article is not the original, so your guess is as good as mine.

 

[davidbains]

You're doing well at 25years!!
Are the engine feet original? I had to replace mine due to rust at 18yrs!
Plus several other ancilliaries while the engine was lifted out for the feet.
I'm already planning it's replacement with a 3YM20 although they do not seem to be without problems, but hopefully slightly more powerful. The 2GM20 is a good reliable engine but it does not deliver 20HP!! More like 14HP below 3000 revs. Only just enough to run Kiwi prop if you increase the tickover speed.

 

[jfkal]

Guys. Check them often. My old 3GM30 never had that problem but on the new one the elbow failed after 2 years, together with the lift pump (but that is another story).

 

[awol]

[ QUOTE ]
Guys. Check them often. My old 3GM30 never had that problem but on the new one the elbow failed after 2 years, together with the lift pump (but that is another story).

[/ QUOTE ]

You're in luck! There's a 3GM exhaust mixer on Ebay for £9.99 at the moment.

 

[awol]

It seems it could be a problem with YANMAR 1GM10 9HP DIESEL INBOARD AND GBOX ENGINE SEIZED too.