Reviving NOS Webers, Initial Settings? Options

[bbrock]

I didn't want to hijack the other thread but have a question about my own Webers. They are Italian 40IDFs I bought in the late 80s or early 90s. Other than finger tight bolting them on to my engine to see how cool they looked, they have never been used. No fuel has touched them. I don't remember if I even opened them to set the float levels. BUT... they were stored in a humid basement for several years before I moved to a civilized climate. So, the magnesium housing is tarnished on the outside and the plating has deteriorated on a few of the levers and such. Pretty minor stuff from what I can see.

My question: is there is anything special I should do or check other than inspecting for corroded parts and normal setup as I prep these for service?

[bbrock]

I finally got around to this project. I have the first one squeaky clean from a functional standpoint but the corrosion left dark stains in the bodies I wonder if anyone knows a magic trick to get rid of.

I have new accelerator pump diaphragms and all rubber seals coming from Pierce Manifold. My float needle valves are solid brass and look brand new so I didn't order replacements.

Here's what the body looked like after disassembly. Since this carbs have never been used, I wasn't surprised they came apart without any fights or mishaps. Plenty of nasty corrosion though.

(IMG:http://www.914world.com/bbs2/uploads/post-20845-1558414550_thumb.jpg)

(IMG:http://www.914world.com/bbs2/uploads/post-20845-1558414588_thumb.jpg)

Since there was never any fuel in it to form petroleum based gunk and varnish, I skipped Berryman or any other strong solvents and just soaked the stripped body in diluted Pine-Sol, followed by rinse dry, then soda blasting, then rinse and dry. It's nice and clean, but rather ugly. Here's the worst side:



The other side had less corrosion and looks better, but not great:



The accelerator cover cleaned up nicely and is more what I was hoping the bodies would look like after soda blasting.



A few things I've tested in hidden spots to try to brighten the dark spots are: Mother's Mag Polish, white vinegar, Griot's Diablo wheel cleaner, Jay Leno's Garage wheel cleaner. None worked. I have not tried oven cleaner, lemon juice, or boiling in anything.

Anyone know any tricks to make these look new again? (IMG:style_emoticons/default/confused24.gif) I'm getting worried there was some kind of protective coating applied that the corrosion took away. (IMG:style_emoticons/default/sad.gif)