• We are no longer supporting TapaTalk as a mobile app for our sites. The TapaTalk App has many issues with speed on our server as well as security holes that leave us vulnerable to attacks and spammers.

Barn of Parts 11-18 Apex Header Repair Flanges

earthling said:
www.permatex.com

Permatex® Muffler & Tailpipe Sealer - Permatex

www.permatex.com www.permatex.com

It is kaolin based which is a silica based clay material. Similar to JB Weld exhaust products. No experience using it but I have seen very little that is rated above that 700f rating.
Click to expand...
I did note the the JB weld High Heat is in that range. The JB weld Extreme heat is rated higher. And they mostly talk about exhaust systems for their purpose. Who knows.
 

That permatex sealer @ 2000f is the highest I have seen next to some of the fireplace sealants (2500f). The JB Weld High Heat is water soluble, the other kaolin based JB Weld products are not but rated to less heat.
 
I've used red rtv to seal up 2 stroke exhaust between the pipe and can, would this not work in this application?
 
It just depends on how hot that particular section gets. All of the silicons give up around 6-700f and repeated exposure.
 
earthling said:
ok, corrected to 600-750f, but it still all depends on just how hot the exhaust gets at that position. If the exhaust is only 500 may be okay, but if its hotter, don't bother.
Click to expand...
It definitely will be hotter that close to the heads. I bet it tops 1100/1200-degrees F when run hard.
 
biffdotorg said:
I did note the the JB weld High Heat is in that range. The JB weld Extreme heat is rated higher. And they mostly talk about exhaust systems for their purpose. Who knows.
Click to expand...
1709735330923.png
 
I tried to use this JB Weld stuff for a minor repair at the header/muffler coupling on an 05 Rage. It didn't survive the first ride.

I think I found something rated higher but never used it. It's really just better to properly repair or replace.
 
Just thought I would update on these. I have opted to go with stainless rivets to secure the flange to the pipe. The titanium drills much easier than i expected. Once the flange is in place, one just has to drill the through holes. 3 on top and 3 on bottom like i show in the photo. Using a sealing blind rivet so they should seal internally to prevent any leaks. Beings the flange installs inside the pipe and the expansion rate of the collar is more than the pipe there should be minimal leaks if any. Even if there is a little leak it is sure to be much less than broken flanges! Hoping to get them added to the website later today.

riveted flange.jpg
 
You must log in or register to reply here.


Back
Top