I drove to the dump today with a load of tree clippings, 10 miles each way. Maybe the "clutch-in test at 50" is not conclusive, but it does not vibrate while free-wheeling with the clutch depressed. Also, it does vibrate pretty good at 30 in second gear.
So I still tend to think the vibration is in the motor.
My less than vast experience in auto mechanics leads me to suspect I must have messed something up in the installation of the clutch and pressure plate. I also had the flywheel off, so I could have botched that as well.
I've had the drivetrain apart enough times now so that I am not worried about the work involved pulling the tranny. I may as well install a new clutch, I skipped that during the engine replacement. Once I get the tranny and clutch removed what is to stop me from starting the engine and checking if the engine runs with less vibration?
