the -ped will go faster than 22mph. it probably goes to about 30 but the vibration practically rattles my teeth out. it's got to be something that rotates with the engine.
the exhaust pipe does also leak from where it's connected to the cylinder block. it is attached with a locknut which is pretty much rusted to the cylinder head. i'm also pretty sure the crush gasket underneath is no longer sealing the pipe to the block.
could it be running lean without good seal to the exhaust?
could carbon build-up be an issue?
would adjusting the timing or points gap be any help?