Painting advice for bumpers

[neunelfs]

My 911T rolled off the factory floor in April 1972. After nearly 50 years and 106,000 miles, the front bumper, rear bumpers and license plate panel are being restored and resprayed in original Tangerine color as part of a gentle and restrained 50th Anniversary makeover. I would appreciate this group's guidance on undercoating and related choices:

Please offer any general advice, but my specific questions are:

Where should my painter apply textured undercoating, and what type and color undercoating is best? Where should undercoating NOT be used?

What paint to use on top of undercoating, if any? Where should body color be applied over the undercoating, if anywhere? Originally, the panels appear to have only some tangerine overspray on the undersides.

Thanks,

Alex

[digit3]

Following!

[karlusmagnus]

Sub'd .... my 72T will be 50 on May 17th :-)

[Bahman]

My '72E's bumpers are original. Only the insides were undercoated at the factory, and lightly sprayed (topcoat) with car's body color (single-stage). I have successfully used Wurth black undercoating and sprayed polyurethane single-stage paint over it after full cure, on my other cars.

[ejboyd5]

Something I posted back in 2010 on the 912 site:
"Speaking of sacrilege: a perfect match for 6809 tangerine can be found with Testor's spray enamel # 1628 which is described as either "Gloss Orange" or "Competition Orange" on the 3 oz. cans which should be available at any hobby store."
Obviously not recommended for large areas, but as a touch-up that remains unnoticeable to me to this day.

[neunelfs]

Thanks. This could come in handy.

[Scott A]

this is the inside of a 1971 bumper. super low mileage car. metallic gold.

by 1972, they were painting surfaces with even less black and color...most likely spending less to make more.

the inside of the bumper was the very thick bumpy grey rubberized material. (a medium grey...with a brown tint, not a blue grey)
the bumpy material is grey to start with....and not painted...

there was only a slight bit of yellow that got on the inside surface.



the rear bumpers were the same...
The 700 mile car is grey too...but the car being silver...its hard to tell the grey from the silver.

also,
in most places, I painted a top grey coat on my bumpy grey material...to get the proper grey.
also...i painted the inside of my bumper in body color, on top of the bumpy grey....just to get more corrosion protection layers in there. since it takes a beating.

[neunelfs]

Something I posted back in 2010 on the 912 site:
"Speaking of sacrilege: a perfect match for 6809 tangerine can be found with Testor's spray enamel # 1628 which is described as either "Gloss Orange" or "Competition Orange" on the 3 oz. cans which should be available at any hobby store."
Obviously not recommended for large areas, but as a touch-up that remains unnoticeable to me to this day.

Is 6809 same as 018 Tangerine?

[Longballa]

To get the right texture we use Wurth SKS with the Wurth gun to shoot it. Takes practice and adjustments the gun. Body color over the texture which is on the inside of the bumpers. Lot of steps and masking but that's what it takes. The Wurth is black but color not a big deal as it's being painted over. Grey SKS Wurth not available for years now in US. The paint I use is Glasurit 22 line.

[neunelfs]

Thank you all for the insight and great reference material. Please share any additional advice.

Here are a few pictures of the work in progress. In addition to the original tangerine bumpers, I'm fitting a factory steel S chin spoiler for the car (originally sepia brown) -- thus the reason you'll see two front bumpers in some pictures. I love the clean look of the chin spoiler without overriders, but the original bumper is also getting the full makeover.