Official "Cheeky Plonker"
Join Date: Jan 2008
Location: Spring, Texas, USA.
I can't say I know what's going on with your knock, but I do know this! If on your shakedown run you had a plug not firing, you'd have known about it!
What is normally a powerful revvy machine, becomes as gutless as a Honda 50.
For what it's worth and if I may be so bold? The current rebuild of the `80, `81, `82 & `83 GL1100STDASPENSTATE can be followed on classicgoldwings.com in a thread called "The plan is to turn 140,000 into 50,000."