Delkevic include a small tube of that with their exhausts to seal the downpipes to the collector and collector to muffler.
After using it, I discovered stovepipe high-temp silicone in the farmers' store, same stuff. I've had the muffler on and off a number of times and that stuff has lasted well. Between installs and removals it hasn't ever blown out or burned away, I'm impressed.
. Got it done but couldn’t access the bolts with a socket for my torque wrench so I just snugged them up by hand. I’m keeping my fingers crossed that the cam seals don’t start leaking. For insurance a smeared a bit of Hylomar on the caps where the seals sit. This is frustrating since I paid over $5K (not a typo) to have the engine built. Wonder what else they messed up? On the upside I’m glad I was able to address these issues before I completely assembled the motor and installed it.
