QUALCO Muffler Weld - Exhaust system repair

Pszemol · 2005-08-06T15:54:13+00:00

Anybody here used the above mentioned product ?I applied yesterday some amount of it on my exhaust systemin my junky car but my concern is that this stuff does not harden.I left a small blob of the material on the parking lot to comparehow it hardens on my car and this morning it had thin layerhardened on the surface but when I pressed harder my fingerplunger into the blob, which turned out to be wet and soft inside.If this is how it works on the muffler system I do not like it!I was in the understanding this is kind of polymer, similar to epoxy,which hardens on its whole volume, but it looks like this is asolvent type stuff which hardens trough the surface evaporation.When the surface hardens, the deeper layers do not and stay soft.Any advice?

Aug 06, 2005 22 Replies

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Pszemol 20 years ago

If anybody still interested in this thread from 8/6/2005: It is over a week since I did the repair and so far so good. I have inspected the car today and even made a picture:

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cracks come from too tick layer of the goo I put on.It did harden from the surface leaving the bottom layerswet and soft - when I started the car after a day ofdrying it hardened too quick leaving cracks. The cracksdo not affect the performance of the glued pieces at all.It is rock-hardened and sealed completely.Exhaust works as new, I am very satisfied with this $2.99 repair. BTW here is the link to the product I have used:

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here is its MSDS:

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Greetings, Pszemol.

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Pszemol 20 years ago

:-) Ha, ha, ha... it cracked. This glue did not hold the pipes. This repair lasted less than 3 weeks!

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Scott Dorsey 20 years ago

I have actually had good luck with the high temperature silicone cements for field-expedient muffler repair. The red stuff from GE Silicones is what the local industrial place carries and I have had it last at least the six months or so that it took me to get around to fixing it properly. The silicone never really hardens but remains rubbery, so that it does not break when the muffler flexes and changes shape as it heats and cools.

--scott

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