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  #1  
Old 06-27-2014, 07:47 PM
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kostendorf kostendorf is offline
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Default Muffler blues

The muffler developed a leak so I took it all apart and found out the aluminum muffler box support has a crack in it too. Any ideas on fixing this?
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1977 1650 with cast iron lower grill housing, cast iron oil pan, 54" push-snow blade, rear blade, disc-harrow, 44c and 48" decks, Two cultivators, #1 tiller with both extensions, loaded tires, 75' weights and chains, #2 cart.
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  #2  
Old 06-27-2014, 08:08 PM
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Jeff in Pa Jeff in Pa is offline
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You have a TIG welder nearby? I recall seeing a low heat ( propane ) "brazing" type repair for aluminum boats. There is also aluminum epoxy on ebay for about $15 shipped too.
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  #3  
Old 06-27-2014, 08:40 PM
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Berwil Berwil is offline
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My 1450 muffler cracked there too. I wire wheeled it and mig'd it, it's too dirty for tig. Use a higher heat setting and spot welds...zaap, wait a few sec move over 1/4", zaap again. It's been 1 1/2 years and no issues.

Tig will be the easiest on the muffler box. I would still be worried about recracking, may want to plate it and/or add a muffler brace. I made one for mine 2 weeks ago, but am too embarrassed to show it.

Bill
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  #4  
Old 06-27-2014, 10:33 PM
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Alvy Alvy is offline
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I would say mig the muffler after drilling small holes at each end of the crack and have someone tig the box or aluminum mig spool gun but TIG is best.
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  #5  
Old 07-09-2014, 07:26 PM
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kostendorf kostendorf is offline
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Quote:
Originally Posted by Berwil View Post
My 1450 muffler cracked there too. I wire wheeled it and mig'd it, it's too dirty for tig. Use a higher heat setting and spot welds...zaap, wait a few sec move over 1/4", zaap again. It's been 1 1/2 years and no issues.

Tig will be the easiest on the muffler box. I would still be worried about recracking, may want to plate it and/or add a muffler brace. I made one for mine 2 weeks ago, but am too embarrassed to show it.

Bill
Well I added a muffler brace and mig'd the muffler. It came out great, best weld I ever did and the picture got deleted somehow and I didn't know it till everything was back together. I checked on having the box welded and I think I'll wait till I find a used one. This is how I fixed the box till I find one and it seems to work for now.
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1977 1650 with cast iron lower grill housing, cast iron oil pan, 54" push-snow blade, rear blade, disc-harrow, 44c and 48" decks, Two cultivators, #1 tiller with both extensions, loaded tires, 75' weights and chains, #2 cart.
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  #6  
Old 07-09-2014, 07:46 PM
J-Mech J-Mech is offline
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Nice work Keith! If it works well, I'd leave it!
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  #7  
Old 07-09-2014, 07:53 PM
BCDSFCRET BCDSFCRET is offline
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Clean the joint up with a wire wheel on a 4" grinder then braze the crack up>
Brian
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  #8  
Old 07-09-2014, 08:50 PM
Maxwelhse Maxwelhse is offline
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Nice work Keith! If it works well, I'd leave it!
+1

(and some other stuff because my message is too short)
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  #9  
Old 07-10-2014, 10:11 AM
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Great job!
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  #10  
Old 07-10-2014, 10:27 AM
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Great job! I agree, no sense in pulling it all apart if your plating fix works.

Bill
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