Renewing a valve cover (cosmetic)

[kbmb02]

15 hours ago, uai said:

 

Those bearings were new ...
200km with glassbeads in the valvecover labyrinth (not my parts)

enough room for a good spoon full of abrasives

 

I count that as "1" 😉 ...

 

14 hours ago, Tdh said:

Man I just always make the assumption that having a part media blasted goes hand in hand with cleaning the shit out of it when you get it back.

 

^ Agreed. Clean everything. -KB

[uai]

18 hours ago, kbmb02 said:

I count that as "1" 😉 ...

haven't got pics of the others, but one was a freshly restored Alpina B7S engine - very pricey for the owner who wants to stay unnamed.
I myself had this with a VW Engine when I was 20. I pressure washed throughly, had it twice ultrasonic cleaned did also the brake cleaner pipe brush compressed air cleaning and still my oil cooler exploded twice (stuck oil release valve) before I realized my new engine was crap.
 

Edited March 20, 2023 by uai

[HBChris]

When I had a M30 oil pan tumbled I then had it cleaned ultrasonically as was recommended.

[jimk]

18 hours ago, uai said:

 

Those bearings were new ...
200km with glassbeads in the valvecover labyrinth (not my parts)

 

 

enough room for a good spoon full of abrasives

 

What's with the brown, varnish looking coating on the bearings in the non galled areas?  Is there more to the story?

[uai]

4 hours ago, jimk said:

What's with the brown, varnish looking coating on the bearings in the non galled areas?  Is there more to the story?

That's copper which becomes visible once the silver stuff is gone

[NYNick]

Mine was never painted, but I had my parts vapor honed.

[Russell74Fjord]

I like just polishing the raised portions, lettering. 

I used progressively finer and finer sandpaper grits attached to a flat hard rubber sanding block and slowly carefully sanded, making sure I did not sand anything but the raised parts. Then Mothers polish. I did not polish the zundfolge 1342