The ultimate upgraded rear main thread

[DouglasBuchan (Doug)]

[E-Type] Engine Rebuild - Rear Oil Seal Question

'evening all, Just starting to rebuild my 4.2. Everything is properly machined by an experienced quality shop. Crankshaft turns with mild stiffness when the mains are tightened down but if the rear rope seal housing is tightened up it becomes very stiff, almost impossible, to turn. I guess there is a lot of interference between the rope seal and the crank. Is there a problem or will this ease up as the rope seal takes shape? The rope seal from a Payen gasket set was difficult to insert. …

Hi Terry,
Check out this older thread for measurements.