Paul
  I finished contouring the welds and the porting came out real nice.  I had a question on potting the housing using the Liquid Aluminum from DEVCO.  Is there any preparation that needs to be done to the aluminum prior to potting?  Like taking it down to bare aluminum and etching?

Mike C.

Absolutely. You bet. Epoxy is not going to stick until until  you grind it down to the bare aluminum and convert the aluminum surface with this kit. Get it in yacht stores.

IMHO not worth it as if it ever needs a pin hole leak repair it will be a pain in the ass to dig it out of there.

It is much better to fix any leaks with low viscosity MG Chemicals liquid silicone rubber. Used for conformal coatings on electronic circuit boards. Good to 400 F. In fact I recommend putting some in the gap around the SS tube and the inner wall of the rotor housing now just in case. You can use an eye dropper to it. All it takes is a tiny amount.

Paul Lamar