1970 914-6 Bottom Paint Question? Options

[racerbvd]

I got a big question on our 914-6, on the bottom, mine has been painted a different color (from the factory) and undercoated:confused:
My paint guy says that he finds no traces of Blue on the bottom and that the color & under coating appear to have been applied from the factory..
, (IMG:http://www.914world.com/bbs2/uploads_offsite/forums.pelicanparts.com-226-1320700084.1.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/forums.pelicanparts.com-226-1320700084.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/forums.pelicanparts.com-226-1320700085.3.jpg)
This is a Concours Restoration, so it has to be correct, so on one hand I'm thinking just Paint the bottom the matching Blue, but on the other hand, Porsche was also known to sometimes spray the bottoms with what ever was left in the Spray gun and I know of one collector who has a few 914-6s, like mine, both 70s and both OEM, yet one of his 1970s Six's has no coating; another '70 does:confused:
I need to figure this out ASAP as the car is ready for Paint..
(IMG:http://www.914world.com/bbs2/uploads_offsite/forums.pelicanparts.com-226-1320700085.4.jpg)

[sixerdon]

Here's how the process was described in the August '72 issue of Christophorus:
From raw metal.......
1. Degreasing and phosphate coating.
2. Dip priming electrophorous and baking.
3. Application of standard PVC undercoating and baking.
4. Spray primer and baking.
5. Hand polishing of base coat.
6. Top enamel coat and baking.

Although the subject focused on 911 bodies being built at Zuffenhausen, Karmann was also building 911 coupe bodies under contract for Porsche KG at the same time they were building 914/6 bodies. Therefore I believe they were following the same specification processes.

Don