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Re: Exhaust clamps, regular or guillotine? [Re: Silverado12] #5281799 12/01/19 09:39 AM
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atikovi Online Content OP
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Originally Posted by Silverado12
A guy at the muffler shop showed me a trick a long time ago. He used high temp silicone RTV on the joints and it lasts the life of the exhaust system for sealing minor leaks. Sometimes you slightly deform a joint when you take apart the system and this will prevent leaks.


You sure it wasn't exhaust sealant made specifically for mufflers and pipes? Can't imagine silicone holding up under the heat and pressure.

[Linked Image from images-na.ssl-images-amazon.com]

Re: Exhaust clamps, regular or guillotine? [Re: atikovi] #5281841 12/01/19 10:18 AM
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Mainia Offline
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No, while both will work, modern day high temp silicone works and is more fluid and seals better.

Re: Exhaust clamps, regular or guillotine? [Re: atikovi] #5281853 12/01/19 10:36 AM
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eljefino Offline
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Silicone works fine after the cat as exhaust cools down by then. They sell orange RTV that claims high temp.

Re: Exhaust clamps, regular or guillotine? [Re: atikovi] #5281980 12/01/19 12:36 PM
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If your pipes fit together that badly (that you feel you need a sealant), why not just expand the smaller one till they're a tighter fit?

The cheap plain steel clamps have their place, but if you want to get it apart again later, with less effort and destruction, avoid the goop and just put a band clamp on tight fitting pipes. Make it stainless if you anticipate some portions of the exhaust wearing out faster than others, for example using a stainless muffler with an aluminized pipe after it instead of stainless, so there is a greater possibility you will need to remove that clamp instead of just detaching or cutting out the parts on both sides of it.

The piece at the bottom (screw end) of the band clamp is not much of an issue. Yes it has a fixed curvature, but it is pretty close per the pipe diameter, you are putting this on thin walled tubing so as you tighten it, the tubing conforms that slight bit to that curvature.

Last edited by Dave9; 12/01/19 12:39 PM.
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