I got a few things accomplished this weekend. I picked up the top, bottom, and oil pan of my Porsche 928 S4 Bare Block. I previously wrapped the engine in bubble wrap before leaving New York. Not having a truck and out of trunk room, I had to ship the engine in the back seat of my 2012 Acura TL.
My goal was to start polishing the engine a little bit more before ordering parts to assemble it. I initially bought a Harbor Freight Polishing Kit to use with my existing Harbor Freight Rotary Tool. It was a Dual-Fail. The polishing kit did not fit on the Rotary Tool. Can you believe that? I tried using the polishing kit with the cordless Dewalt drill. It seemed to gunk up in crevices. I stopped using that and started using some aluminum wheel polish. I then used some special lapping compound to prep the Cylinders. Normally someone would use an engine hone. This Porsche 928 S4 Engine is made of a special Aluminum Alloy Called Reynolds 390 or Alusil. So you have to use felt. I don’t recommend you do it with a drill like myself.