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Old 06-08-2017, 12:17 AM
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6.0 Exhaust manifold

Anybody know where I can get a set of one-piece exhaust manifolds? I've searched high & low and haven't seen them anywhere.

Thanks
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  #2  
Old 06-08-2017, 09:39 AM
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mikeg205 mikeg205 is offline
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they show up on ebay occasionally -go aluminum

http://marineexhaustmanifolds.com/in...-and-parts.htm
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Old 06-08-2017, 04:18 PM
chrzanowski5 chrzanowski5 is offline
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I'm in need as well so if anyone find them, please send me a note. thanks
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Old 06-08-2017, 04:27 PM
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So did a little homework and from my "research" found the follow. The one piece Aluminum ones that came factory on the boat are no longer stocked or manufactured. Sounds like they can do a limited run and can still be bought but they are out of stock on them now. They are around $1,100 each.

The good news is you can basically use any LS based marine exhaust manifold on the LY 6.0. It is not a propriety spec for Indmar.

Hopefully this helps others who are looking.
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  #5  
Old 06-08-2017, 04:42 PM
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IIRC, I was looking for a set of non-cat manifolds about 6-8 months ago. Texas MasterCraft said they could get me a set for $1,200.

I also found a set on ebay for around that same price. But they did not say MC on them. They were just blank. I think Volvo uses/used the same riser.
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Old 06-09-2017, 10:10 AM
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etduc etduc is offline
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If we're talking about, ETX non-cat, manifolds. Michiganmotorz, has some.

I picked up, some ETX a few years ago, from a member converting a boat to close system.

Really, in the long run, getting away from aluminum manifolds is a better option.

Aluminum is a reactive alloy. Un-treated water, will cause fast oxidation. (Close loop system, have corrosion inhibitors. Just like car engines.)
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Old 06-09-2017, 10:55 AM
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I have the part numbers somewhere for the LY6 manifolds. I called last fall 2 different dealers and they both could get me the parts (in a couple days) for my motor (08' LY6). I think the cost was 700-900 each side.

My manifolds were leaking from the plugs. Bad design!
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Old 06-13-2017, 09:26 PM
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Does anyone know what the angle is for the 1 piece aluminum factory exhaust manifold(6.0LY Indmar) is, it looks like about 21 degrees but was hoping some of you gurus may know the exact specs.
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  #9  
Old 11-06-2018, 05:54 PM
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Bumping this thread - when winterizing this year, I noticed that my port side exhaust manifold is leaking from the bung where the 02 sensor is located. It is really hard to see any sort of crack, but I get slight bubbling so I can tell where it is leaking from.

My question is, can this be re-welded to stop the leak? Below is an example of the manifold that is on my boat. It is the ETX Cat Stainless Steel Manifold. I circled the area in question where the manifold is leaking from.

Any help would be greatly appreciated!
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  #10  
Old 11-06-2018, 06:07 PM
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Call an automotive machine shop. IF they can't weld it up, they'll know someone.

More than likely, a good muffler shop could do it. If going this route, ask to see them weld it.
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