can i braze an exhaust mount repair?

[CamMann]

Picked up a Dolmar 133 with decent potential. Only major issue is that the muffler was damaged & one muffler mount is broken off the cylinder. Thinkin i might cut a mount off any junk cylinder & braze it on with aluminum brazing rods or something like that. Curious if anyone has experience attempting to braze on cast aluminum cylinders?

Looks like melting point of the brazing material is 728° F, which is below the (1220°F) melting temp of the cast aluminum. Got a few junk cylinders I guess I can test it on...

 

[Chevboy0167]

Braze... probably not so much. TIG weld maybe. Aluminum has to be really clean and it is very easy to overheat it.

eVilbay has a used p&c for a bit of a price. Gamble on not being able to see inside the cyl. Could ask seller for more pics though...

https://www.ebay.com/itm/352379911041?hash=item520b7abb81:g:VQAAAOSwkkNbIbqy

 

[Bob Hedgecutter]

Find an experienced welder, go visit him, with the cylinder, a box of beer and your best sad puppy looking expression.
A good welder will fix that good as new- he might even have a mill he can machine the face flat for you.

 

[CamMann]

Braze... probably not so much. TIG weld maybe. Aluminum has to be really clean and it is very easy to overheat it.

eVilbay has a used p&c for a bit of a price. Gamble on not being able to see inside the cyl. Could ask seller for more pics though...

https://www.ebay.com/itm/352379911041?hash=item520b7abb81:g:VQAAAOSwkkNbIbqy

Yah, overheating was definitely a concern. Will look into local tig options. Ebay's not an option in Canada. Something as light/small as a penny cost like $30-$40 to get shipped to Canada through Ebay's international shipping program. I'll never understand it.

 

[CamMann]

Find an experienced welder, go visit him, with the cylinder, a box of beer and your best sad puppy looking expression.
A good welder will fix that good as new- he might even have a mill he can machine the face flat for you.

Sounds like the best option, much appreciated!

 

[camel2019]

Yah, overheating was definitely a concern. Will look into local tig options. Ebay's not an option in Canada. Something as light/small as a penny cost like $30-$40 to get shipped to Canada through Ebay's international shipping program. I'll never understand it.

I just bought a 100ft reel of chain on eBay from the us and it only cost me $40 shipped to Canada theirs also Canadian sellers on there too.