Now that I have the head off my 3.5 OM603, I need to prep the surfaces for the new gasket. Block is easy using razor blade and shaving cream to prevent debris in holes.

I’ve been using the same tactic for the cylinder head. I used Goof Off, razor blade and brake clean.

I’ve done roughly two and a half cylinder areas. I’m thinking this isn’t clean enough. Am I being too picky, or should I go to the other coast and look for a machine shop?

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1982 300SD- Flatface wheels, double din, 6 Speakers w/amp under passenger kick panel, Buzzer to chime conversion

1995 S350D- Rebuilt rod bender, OM606 rotary vacuum pump conversion