Thank you very much Gentlemen. I appreciate it.
A few minutes with a flap wheel on an angle grinder will solve the clearance problem on the current pump. (or maybe using a thicker gasket?) There's nothing particularly "precision" about spinning an impeller around inside a coolant passage.
Jerry
Guess I hadn't given that much thought. Ill pull it back off and grind it down. Still aim to have the original rebuilt and on the shelf as a spare at the very least.
