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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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How to fix a busted manifold elbow....

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Don-Wi

11-19-2005 15:47:57




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When the muffler had to be removed for the new clutch, a chunk of the cast broke off inside the muffler. I retroed a peice of pipe just to run the chisel plow as soon as we got it back but I wasn't going to listen to that all the time....
Donovan from Wisconsin

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george md

11-19-2005 22:14:13




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 Re: How to fix a busted manifold elbow.... in reply to Don-Wi, 11-19-2005 15:47:57  
Don , That's a really well done repair , it might even hold if the expansion rate of the steel
sleeve and the nickel weld doesn't make it tear
loose. Would have been much better if you had made the sleeve out of cast ( engine sleeve out of a
farmall A or similiar) iron and welded it with oxy/acetylene and cast iron rod . That way all the materials and the weld are all the same and expand
at the same rate.

george

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Don-wi

11-20-2005 15:12:07




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 Re: How to fix a busted manifold elbow.... in reply to george md, 11-19-2005 22:14:13  
I did it with what I had available, no cast iron in the scrap bin. I made the sleeve"s bore about 10-20 thou over 3 1/8, and there wasn"t much to work with anyway. I"m hoping it holds, and I think it will. I reversed the polarity like you"re technically supposed to do. The hardest part was welding it still on the tractor, in the vertical position so close to the hood. I made sure to put a good weld champher on it, and filled it in as good as I could given the circumstances. It would defiantely have been better to remove it from the tractor, but this spring I took the main manifold off the engine to replace the turbo adaptor, and it showed no signs of letting go of the turbo. Probably rusted just as bad as it was to the muffler.

I have done some other small cast repair, one was the hitch on our JD disk. I backed into it and it got cocked on the drawbar, breaking the top half off. I ground it all the way out and welded it up, its been holding for about 6 years now. I do some of it at work also, welding new steel sprockets to the cast iron hub we cut the old teeth off of. They haven"t come back yet so they must be holding. (I do about 90% of all welding that goes out of our shop, both production runs and custom orders.

Donovan from Wisconsin

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fixerupper

11-19-2005 19:32:34




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 Re: How to fix a busted manifold elbow.... in reply to Don-Wi, 11-19-2005 15:47:57  
Good job, and a lot cheaper and quicker than a new manifold. I broke a piece of exhaust casting once and tried both brazing and nickle with no success, so out of desperation I used plain old 6011 and it worked! It has held for 25 years. Keep up the good work. Jim



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mud

11-19-2005 17:35:14




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 Re: How to fix a busted manifold elbow.... in reply to Don-Wi, 11-19-2005 15:47:57  
Nice job Donovan.



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Don-Wi

11-19-2005 15:49:45




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 Re: How to fix a busted manifold elbow.... in reply to Don-Wi, 11-19-2005 15:47:57  
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I made up an adaptor out of a peice of 3 1/2" hot rolled, about 4" long. I bored one end out to fit over what was left, and the other side I turned down to fit the muffler.



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Don-Wi

11-19-2005 15:52:00




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 Re: How to fix a busted manifold elbow.... in reply to Don-Wi, 11-19-2005 15:49:45  
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I welded it on w/ some Ni-rod, letting the engine run to provide the pre and post-heat as well as blow any ting out before it got too far into the turbo. I clamped the ground right to the adaptor.



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Don-Wi

11-19-2005 16:12:33




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 Re: How to fix a busted manifold elbow.... in reply to Don-Wi, 11-19-2005 15:52:00  
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Here it is, muffler mounted back on. It only took me about 45 minutes to widdle the adaptor out of a peice of scrap at work, and another 30 minutes to weld it on. It's almost good as new now.....



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