Painting Trailing Arms
Thread Starter
Melting Slicks
Joined: Oct 2010
Posts: 2,276
Likes: 337
From: "ɹǝpunuʍop", Adelaide, South Australia
Painting Trailing Arms
arms disassembled, took to work and hot washed and grit blasted.
as for painting, do any of the "flat faces" between the parts need to be left unpainted for correct assembly?
have seen both painted and unpainted in pics on internet or youtube clips.
1: between the trailing arm and the spindle support?
2: between the spindle support and the caliper bracket?
3: between the caliper bracket and the parking brake flange plate?
thick coat on main areas of arms and then would a thin mist coat to stop rusting be manageable on the flats?
was going to use a chassis black on the parts, maybe a cast grey on spindle support....
as for painting, do any of the "flat faces" between the parts need to be left unpainted for correct assembly?
have seen both painted and unpainted in pics on internet or youtube clips.
1: between the trailing arm and the spindle support?
2: between the spindle support and the caliper bracket?
3: between the caliper bracket and the parking brake flange plate?
thick coat on main areas of arms and then would a thin mist coat to stop rusting be manageable on the flats?
was going to use a chassis black on the parts, maybe a cast grey on spindle support....
Race Director
Joined: Nov 2006
Posts: 13,246
Likes: 7,837
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
When I did mine, 6 - 7 years ago now I think. Hung them up. etch primed them. Shot them with satin black enamel. Painted them inside, (best I could) and out. no issues to this day.
Melting Slicks
Joined: Apr 2010
Posts: 2,794
Likes: 1,195
From: Canberra Australia
2025 C3 of the Year Finalist - Modified
Alan, one great thing I got with my rebuilt rear hubs from Bairs is reverse studs.
So you install and remove the hub assembly complete without needing to disassemble.
So you install and remove the hub assembly complete without needing to disassemble.
Last edited by CraigH; Apr 10, 2023 at 08:04 PM.
Tech Contributor
Joined: Aug 1999
Posts: 15,175
Likes: 3,989
From: Connecticut, USA
Since you have the capabilities, I would weld the arms better now that you have them apart and blasted. You can powder coat them, but I like to etch, POR15 and topcoat them in black. I keep the mating surfaces free of anything and deburr them.
