I had a little trouble getting the pipes back on. The first couple threads on 2 of the studs were just a little tight fitting in the nuts so I couldn't get them started with my fingers. These were also the 2 hardest nuts to reach. I finally go them on and properly torqued, with oil on the threads.
One of the nice improvements was in the exhaust gaskets which came in the set. The old ones were copper with an asbestos core. The asbestos took care of the heat and the copper protected the asbestos from the flow of hot exhaust gasses. There is a piece of thin sheet copper on each side of the asbestos. The inner edge of copper is the same thin sheet formed like a grommet overlapping the copper sheets on each side.
Even though the gasket is crushed between the cylinder and exhaust pipe flange the vibration on the pipe is enough to allow it to wiggle and slowly destroy the weak asbestos. Eventually some of the asbestos works out from between the layers of copper, the inner ring of collapses and the joint leaks.
The new ones have an 1/8 in thick steel frame which takes the compression load, so the joint can't wiggle, while the inner gasket just has to maintain the seal. The inner gasket is a soft Spiral Wound metal which compresses to the thickness of the steel frame to form the seal. I really like the design. The Continental torque spec. is based on using this style gasket.
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