I duly welted it back together and retightened the Ubolt, and.......
No more farting.....
No more flat spot.....!
AND.....
No more laying blue smoke screens......!
I'm not saying the engine isn't pretty worn, but would never have expected such a difference from a blowing exhaust. (I could understand if the whole lot had fallen off, causing 'orrible negative pressure wavey things).
Expand and explain, please
