Wurth Exhaust Sealant

G6 at Snook, TX

Well-known Member
Has anyone ever used Wurth Exhaust Assembly Paste rather than the permatex ultra copper? Any preference? It would be on the manifold.
 

If its a High Temperature Silicone Exhaust Sealant should work... Its all going to turn to powder anyways were the heat is (its a heat thang). That's a good thing it acts as a lubricant and will add years to the life of the gasket and associated parts as long as they were in good condition to start off with. If the parts are not in good condition it would be a temporary fix as any patch would be...

Some put them on dry some glue it on with copper coat there dream makes them feel good... They are doing nothing to preserve the gasket are associated parts in fact they are making it worst...
 
This is going on the the gasket between the block and manifold. I asked about the Wurth because it seems to be esteemed by the German manufacturers of cars.
 
The dark secret about "hi temp" silicones and epoxies is they are only good for a couple hundred degrees more than the non-hi temp stuff, 650F tops. and that's for
intermittant use. That is probably well below typical exhaust manifold temps though it is hard to say with a slow moving old engine like our Fords'.

Wurth makes the usual silicones which can be expected to perform just like the US ones, and also a Exhaust Assembly Paste which is good for around 1200 F and appears
comparable to the high temp poducts like Versachem and Thermosteel that are popular with n-series owners for fixing eroded exhaust portleaks.
 
What are you trying to seal?
Manifold to engine?
Do you have pitting on one side or another that you need the pucky for?
If no pitting why not assemble it dry like they did at the factory?
When I assemble an engine I use silicone - a total of about the volume of a couple of nickels.
On the whole engine!
 

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