sandblast repaint

I have an 8N 1950 Ford and am in the process of refinishing it. Couple of questions for you experts of which I am not so I need good help.
1. Any particular things to watch out for in sandblasting the chassis of the tractor.
2. What kind of primer should I use to it prior to painting.
3. They list 3 different Gray paints, Gray, Light Gray and Medium Gray. Which Gray was factory color paint.

Thanks for the help.
 
1. Be carful you don't blow sand past seals so it winds up in gear case or engine. A powerful blaster can warp sheet metal from heat.
2. Decide on top coat first then use reccomended primer.
3. I don't like seeing old Fords painted blue but like later model light gray much better than older drab dark gray. I don't parade nor show but if I did I'd stick to what was origional.
 

There have been many posts here over the years, and I have heard the same thing from people direct. Apply positive protection to all seals! The media will get into the seals and after just a few hour use the seals will need to be replaced. Since any sort of rubber is impervious to blasting I would apply a few beads of silicone seal to all seals, as well as any moving joint such as leveling box and lift arms, and remove it after.
 
Use true epoxy primer, you can topcoat anything over that. Unless you are using PPG, DuPont, Sherwin Williams etc good epoxy will cost 2 or 3 times your topcoat. I use PPG: epoxy followed by urethane, or on sheet metal epoxy followed by a high build surfacer followed by urethane. Urethane uses hardener, requiring supplied air.
 
Here are a few links for some post I made a while ago. They may help you decide on how you go about painting your tractor. This is my first attempt so I would encourage you to search the Paint and Bodywork archives. There is a lot of information available in the archive. Sorry I don't know how to post more than one link at a time so you will have to copy and paste into your browser.




http://forums.yesterdaystractors.com/viewtopic.php?t=1252872&highlight=
Untitled URL Link
 
Do not ever sandblast a tractor unless you are planning to do a complete tear down afterwards and clean all the sand out of it.
 

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