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Old 01-14-2014, 04:49 PM
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Streak Streak is offline
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MCX Exhaust Manifold Repair

Hello,
Like many others, my anodes on my exhaust (06 MCX ETX) need to be replaced as they have corroded enough that they will need to be replaced. I initially "repaired" them with JB Weld to get me through the season, but now it's time for a proper repair...,
Does anyone have a contact number at Indmar, where I'm hoping I can get some of the replacement anodes (picture below), and or any tips for the repair. I plan to grind off the old discs and have the new ones welded in by a friend.
Thanks
Streak
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  #2  
Old 01-14-2014, 05:15 PM
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I thought those were freeze plugs.. I wonder why they corroded?

start here..

Larry Engelbert
Indmar Customer Service

Indmar Products
5400 Old Millington Rd.
Millington, TN 38053

Office: (901) 353-9930
lengelbert@indmar.com
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Old 01-14-2014, 07:42 PM
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They're also called "Welch" plugs, available in different sizes and materials. I just googled welch and this link popped up. Pretty sure all the industrial sites have them too.

http://www.ebay.com/itm/Welch-Plug-W...item4d08ef4860
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Old 01-14-2014, 08:14 PM
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Those are not anodes or welch plugs. They are holes left over from the casting process and are spool gun welded in afterwards. They are not designed to be freeze plugs either. It's just an affect of manufacturing.

However, they can be ground out and rewelded with an aluminum spool gun or tig welded back in.
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Old 01-14-2014, 08:30 PM
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Quote:
Originally Posted by CantRepeat View Post
Those are not anodes or welch plugs. They are holes left over from the casting process and are spool gun welded in afterwards. They are not designed to be freeze plugs either. It's just an affect of manufacturing.

However, they can be ground out and rewelded with an aluminum spool gun or tig welded back in.
Correct. But IIRC, the easier repair is to grind away all the compromised metal as you suggested, but weld the welch plugs in place.
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Old 01-14-2014, 08:32 PM
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JB Weld em
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Old 01-14-2014, 09:25 PM
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interesting thread.... http://en.wikipedia.org/wiki/Core_plug

learnt sumfin today...
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Old 01-15-2014, 10:08 AM
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Quote:
Originally Posted by Streak View Post
Hello,
Like many others, my anodes on my exhaust (06 MCX ETX) need to be replaced as they have corroded enough that they will need to be replaced. I initially "repaired" them with JB Weld to get me through the season, but now it's time for a proper repair...,
Does anyone have a contact number at Indmar, where I'm hoping I can get some of the replacement anodes (picture below), and or any tips for the repair. I plan to grind off the old discs and have the new ones welded in by a friend.
Thanks
Streak
I tried to get the casting plugs from Indmar this past summer, but they said they do not provide this service to the individual anymore. The part can be ordered from them through a MC dealer, etc. My local MC dealer tried to order them, but had problems for some reason. I finally found them through Inboard Marine, http://www.inboardonline.com/, #582006, Plug Alum Weld-in Ext Manifold. The key to preventing the electrolysis/corrosion from attacking the plugs in the manifolds is to drain the manifolds (separate the quick drain hose that runs between the manifolds) any time the boat is going to sit unused for more than a couple of days...hope this helps, mac
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Old 01-15-2014, 02:32 PM
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Geez I'm feeling pretty good about my RTP now.....
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