Gutted

[oakleyb]

Decided to remove exhaust manifold on Yanmar 3gmd to paint as it was looking pretty rusty. Took the outer cover off and was met with a carbon filled chamber - answer to why not much water ever seemed to exit the exhaust i guess although she never overheated.

Anyway started manually removing build up only for the screw driver to go through the dividing wall - guess thats a new manifold then ! how much are we talking ? i notice its not listed on the marine power website so i guess its furrharking expensive

 

[exfinnsailor]

One for a Yanmar 3ym20 was £210 last year + VAT. Mine had a cracked weld so the local SS man welded it up for £10.

 

[sailorman]

Decided to remove exhaust manifold on Yanmar 3gmd to paint as it was looking pretty rusty. Took the outer cover off and was met with a carbon filled chamber - answer to why not much water ever seemed to exit the exhaust i guess although she never overheated.

Anyway started manually removing build up only for the screw driver to go through the dividing wall - guess thats a new manifold then ! how much are we talking ? i notice its not listed on the marine power website so i guess its furrharking expensive

a new Nanni mixer £75

 

[Cloven]

Just did a search for Yanmar 3GMD and came up with this:

http://shop.torresen.com/ships_store/index.php?p=details&mfc=Yanmar&sku=128170-13530

Same part number on the Marine Power website came up with:

http://www.marine-power.co.uk/catalog/product_info.php?products_id=231

Does this look like the part?

If no, apologies.

 

[oakleyb]

Eahaust Manifold

Thanks for your replies, i wish it was just the elbow but its actually the entire manifold i need to replace

 

[30boat]

Make one out of galvanized water pipe and elbows.Then have a flange plate made and welded to the elbow.A sipgot tube will have to be welded to allow for water injection as well.The whole thing can't cost you more than £25 and will last for years.If it works for Bukhs it works for Yanmars.

 

[Scotty_Tradewind]

Thanks for your replies, i wish it was just the elbow but its actually the entire manifold i need to replace

Yes if you can find a good general welder these things can be repaired/strengthened or copied for less than a new one.
One thing I was happy to see in the spares when I bought this boat was a spare Bukh exhaust elbow.

 

[GrumpyOldGit]

Saved the plate and had one bespoke made by local welder in Brightlingsea for £40.00

 

[Scotty_Tradewind]

Saved the plate and had one bespoke made by local welder in Brightlingsea for £40.00

 

[nigelmercier]

Anyway started manually removing build up only for the screw driver to go through the dividing wall ...

I did the same thing on my exhaust elbow. Look on the bright side: it could have happened at sea, and even started a fire.