Post by rayrocketman on Feb 29, 2020 21:42:20 GMT
Sealing a two two piece catalyst chamber is tricky, mainly due to temperature cycling. Copper is a great gasket material, but it has a greater coefficient of than the stainless it is mated with. This causes deformation as it heats up and may require re-torquing of the bolts after each use to account for this.
An alternative long used with high high compression, automotive applications is the copper o-ring. Even
DIY How to install copper o-rings in a Block
honda-tech.com/forums/forced-induction-16/diy-how-install-copper-o-rings-block-2576605/
The above link references this document:
cdn.shopify.com/s/files/1/2201/0995/files/ORING_INSTALL.pdf?174
Parker has an excellent "Metal Seal Design Guide"
www.parker.com/Literature/Seal%20Group/CSS%205129.pdf
Stainless wire may not have the long-term retorque requirements of copper wire in this application because the expansion rate matches the chamber.
Multiple o-rings may be desirable, offset the gaps 180 degrees.
An alternative long used with high high compression, automotive applications is the copper o-ring. Even
DIY How to install copper o-rings in a Block
honda-tech.com/forums/forced-induction-16/diy-how-install-copper-o-rings-block-2576605/
The above link references this document:
cdn.shopify.com/s/files/1/2201/0995/files/ORING_INSTALL.pdf?174
Parker has an excellent "Metal Seal Design Guide"
www.parker.com/Literature/Seal%20Group/CSS%205129.pdf
Stainless wire may not have the long-term retorque requirements of copper wire in this application because the expansion rate matches the chamber.
Multiple o-rings may be desirable, offset the gaps 180 degrees.