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914World.com _ 914World Garage _ Plated Parts Color
Posted by: DennisV Sep 1 2022, 10:56 AM
What color was original plated hardware? Silver / clear or Gold / yellow? I am particularly interested in 1970 914-6 engine area at the moment, if the year or -6 matters.
I've seen some http://www.914world.com/bbs2/index.php?showtopic=119486# and http://www.914world.com/bbs2/index.php?s=&showtopic=115892&view=findpost&p=1434185, but they seem to be focused on personal preferences rather than what was original.
Thanks.
P.S. It was a much easier decision on the 356! I don't think there was gold anything on that car, unless your name was Harry Pellow. 
Posted by: DennisV Sep 1 2022, 01:18 PM
There is a thread on the https://www.early911sregistry.org/forums/showthread.php?78908-When-did-Porsche-transition-from-silver-cad-plating-to-gold-cad-plating-on-911-s&p=593363&viewfull=1#post593363 that sounds pretty convincing and applicable to all Porsche's regardless of model.
- Sometime in 1966 the transition from clear (silver) to yellow was made
- Zinc was used rather than cadmium plating
- Chromate or phosphate was used (giving it a yellow tint) in order to improve resistance to 'white rust'
- These were driven by DIN standards, not unique to Porsche
So that would suggest that all 914 and 914-6 hardware would have had zinc with yellow chromate finish.
Please chime in if anyone has information to the contrary. Otherwise, I guess we're going gold baby.
Posted by: Eric_Shea Dec 2 2022, 10:56 AM
Yellow Zinc Dichromate on almost everything on the car.
Some exceptions are the triangle headlight armature mounting plates that show on the side of the headlight buckets and their counterparts in the fender. Also the door latches and latch plates. These are clear zinc.
Hope that helps,
E.
Posted by: Mikey914 Dec 2 2022, 11:12 AM
I thought they used Hex chrome. It really is the best product, just not available.
Posted by: friethmiller Dec 2 2022, 12:04 PM
Yellow Zinc Dichromate on almost everything on the car.
Some exceptions are the triangle headlight armature mounting plates that show on the side of the headlight buckets and their counterparts in the fender. Also the door latches and latch plates. These are clear zinc.
Hope that helps,
E.
I used blue chromate on my latch plates. I think this is either the same or close to what Eric mentioned.
Also, I think the rear trunk latch (receiver) is something else. I plated mine with zinc-nickel as an experiment. Worked great, IMHO.
Posted by: Eric_Shea Dec 2 2022, 12:25 PM
Pot metal/Alloy casting. We glass bead those.
Posted by: mepstein Dec 2 2022, 12:28 PM
Pot metal/Alloy casting. We glass bead those.
Don’t throw them in with the zinc plating. They will dissolve. Same with the pull knob for the front trunk. Ask me how I know - lol!
Door stays are silver.
Posted by: friethmiller Dec 2 2022, 01:16 PM
Pot metal/Alloy casting. We glass bead those.
Don’t throw them in with the zinc plating. They will dissolve. Same with the pull knob for the front trunk. Ask me how I know - lol!
Door stays are silver.
LOL! yeah, so don't plate the bottom latch. Maybe the nickel saved them from damage? Good to know for next time, though.
Posted by: mb911 Dec 3 2022, 07:07 AM
Pot metal/Alloy casting. We glass bead those.
Don’t throw them in with the zinc plating. They will dissolve. Same with the pull knob for the front trunk. Ask me how I know - lol!
Door stays are silver.
Yup that was my fault when I dropped them off at the players for you. Should have known.
Posted by: mepstein Dec 3 2022, 08:03 AM
Pot metal/Alloy casting. We glass bead those.
Don’t throw them in with the zinc plating. They will dissolve. Same with the pull knob for the front trunk. Ask me how I know - lol!
Door stays are silver.
Yup that was my fault when I dropped them off at the players for you. Should have known.
No, my fault. Learning experience. Luckily they are cheap and plentiful.
Posted by: Eric_Shea Dec 5 2022, 08:05 PM
They don't dissolve in the zinc.
They dissolve in the hydrochloric acid that they pickle them with in advance. If they're cleaned and dipped in a mild hydrochloric solution then or "watched" they'll be fine to plate.
It's just the wrong finish though...
Posted by: rgalla9146 Dec 6 2022, 01:14 PM
Yellow Zinc Dichromate on almost everything on the car.
Some exceptions are the triangle headlight armature mounting plates that show on the side of the headlight buckets and their counterparts in the fender. Also the door latches and latch plates. These are clear zinc.
Hope that helps,
E.
I think the big beefy seat belt washers were also clear zinc
Posted by: StarBear Dec 6 2022, 02:02 PM
Yellow Zinc Dichromate on almost everything on the car.
Some exceptions are the triangle headlight armature mounting plates that show on the side of the headlight buckets and their counterparts in the fender. Also the door latches and latch plates. These are clear zinc.
Hope that helps,
E.
I think the big beefy seat belt washers were also clear zinc
Rory; just replaced mine; mine were yellow zinc, hence the difficulty in getting accurate replacements. Edit
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