Exhaust elbow gasket

[tim]

I'm about to replace the exhaust elbow on my Volvo 2003. Do I need to use gasket sealant with the gasket or will the gasket suffice on its own?
Thanks.

 

[Dipper]

I can't recall using any sealant when I fitted a new elbow to my Volvo 2001.

 

[RichardS]

No sealant should be necessary.

Richard

 

[RIBW]

I'm about to replace the exhaust elbow on my Volvo 2003. Do I need to use gasket sealant with the gasket or will the gasket suffice on its own?

Just done mine. No sealant necessary. The gasket is 1.5mm thick and crushable. I used a torque wrench but chickened out from using the full 20Nm (as defined in the manual - I had read of dire consequences of overtightening in earlier postings on this forum). However I did put a lot of effort into cleaning the two faces thoroughly as they tarnish quickly. The elbow actually wept and tiny puddles of rusty water appeared from 'nowhere'. [I'm led to understand that cast iron is quite porous].
When re-assembling, note that the clamp over the elbow sealing ring on the pipe from the thermostat is a bigger (slightly) than the similar ones on the multibend bypass pipe.
Hope it goes well.
Bob

 

[NormanS]

With that type of joint, I smear the gasket with Copaslip. Never have any bother.

 

[<152587>]

If you have 2 good mating surfaces why use sealant? Totally unnecessary, brew of the devil.

 

[Tim Good]

Shouldn't be necessary but my elbow attached into studs that screwed into the engine body. As such a couple of threads inside were shot so used some sealant as well as the gasket for good measure. Worked fine.

 

[tim]

Thanks folks