[RichHawk]

Originally Posted by 304065

Here's what I did, I recommend it without reservations.


http://forums.pelicanparts.com/911-engine-rebuilding-forum/351023-aluminum-901-05-engine-case-tumble-polished-perfection-defined.html

+1 for Media Tumbling and hot tanking. I have to admit to having done nothing myself on the cases in my 3.2L rebuild, EXCEPT for painting them with clearcoat, which keeps the greasy fingerprints from soaking into the pores of the Aluminum.

http://forums.pelicanparts.com/911-engine-rebuilding-forum/515477-richards-3-2l-total-rebuild.html

Media tumbled aluminum parts just LOVE to suck up whatever minuscule amounts of oils and dirt you have on your hands. Clearcoating the cases and timing chain housings make it easy to clean dirt off.

My only worry is the long term durability of the clear coat. I'll hate if if it turns yellow, or chips really easily.

Richard