Restoring old bolts
here is a "Blackening system"
http://www.eastwood.com/metal-blacke...ystem-set.html
I just did my hood bolts and they came out great. There was some light surface rust in the cups on top of the head. I soaked them for a day and then let them air dry. They should be good for a while. Dark black just like a factory black oxide.
For chrome screws: if it is light pitting with some surface rust, soak them and they should be good. I just did my luggage rack screws and the rust was so bad it went under some of the chrome. Now the rust is gone and the chrome looks funny. Oh well.
The eastwood guys mentioned above probably have something great too.
The Best of Corvette for Corvette Enthusiasts
1) New bolts: Expensive but you don't have the time involved. If you consider it: if you spend a day or two re-doing old bolts and you consider your time, and anything else doesn't look as good (and no other process doesn't), new bolts could be a good idea worth considering. You can probably get all you need for $50. See if you can buy them in bulk from an oline seller by the box. If you want black oxide bolts that look original, when you factor in the labor and materials to restore your bolts and that fact that only black oxide will truely look like black oxide, it might be the best way to go. Depends on what you are trying to achieve.
http://cgi.ebay.com/ebaymotors/25-M8...37148848549433
2) Bluing: I've tried it. It will look ok, but it doesn't have the same level of protection as new bolts, labor intensive, wears off pretty easily and IMO just doesn't hold up as well as you'd think. I glass-bead blasted the bolts and parts I re-did, and I was excited. They looked decent at first, but didn't hold up well. It was a lot of work for what I got. Still might be worthwhile to try if you don't want to spend any money.
3) Painting: Looks pretty good with flat black, and it's quick. But, need to be careful the paint doesn't chip when you reinstall which is very difficult to do. And then they can rust under the washers too if you blast them.
4) Re-black Oxidizing: This will give you a like new finish while preserving the original markings and stampings. The best idea is to take all the bolts you can in one shot, even get some replacements at a junkyard and send them off to get re-oxidized. Send them (with paint removed) to someone like Steve Gregori at www.brakeboosters.com. He will have them dipped in acid which removes the rust and old finish, takes them down to bare metal and then has them professionally re-oxidized just like the factory process. It's not a garage or kitchen table process, it's the real deal. If you do a lot of bolts and want to keep the original markings, it is a worthwhile process. But you might be able to find bolts with like 9.8 on them (original markings in some cases). I sent him a bunch of parts to get re plated with zinc and gold zinc and they came back looking absolutely like new, with the original tooling marks still preserved too. IMO, about the only way this pays is if you are doing a total restoration and you have all the bolts you can send in, in bulk, or have a bunch that you got at a junkyard. That way you have only one shippng charge. If you can buy 50 bolts for $35-$40, then you might as well buy new bolts.
IMO the only thing that looks and lasts like black oxide bolts is black oxide bolts. If you go to car shows, you can tell a nice restoration because they used the 'real' bolts and not painted with chips on them. If it's a low dollar restoration, then paint is ok, I used to do it myself. Good luck.
Mark G
Last edited by Mark G; Jun 28, 2011 at 11:25 PM.
Mark G


Scott
What I tried to do was outline a couple detailed paths to do so and the pros and cons of each as I've experienced. May be detailed to you, but some guys strive for original appearance, others the custom look.
Mark G


What I tried to do was outline a couple detailed paths to do so and the pros and cons of each as I've experienced. May be detailed to you, but some guys strive for original appearance, others the custom look.
Scott



















