65/66 Std. Brake Master Cylinder Cap

[Dave S.]

Wanting to restore an Original M/C cap. Seems that they are gold plated and then Painted black (is it semi gloss or gloss) . Am I correct.?
Also are the two tangs plated gold and painted as well. ? As I understand these caps the originals have small rolled area on the little tabs that hold the tangs.Correct.?
Any guidance is appreciated.

[Joe L.]

Re: 65/66 Std. Brake Master Cylinder Cap

Wanting to restore an Original M/C cap. Seems that they are gold plated and then Painted black (is it semi gloss or gloss) . Am I correct.?
Also are the two tangs plated gold and painted as well. ? As I understand these caps the originals have small rolled area on the little tabs that hold the tangs.Correct.?
Any guidance is appreciated.

Dave-------


If you find any gold plating on any Corvette parts, it's definitely not original---far too costly. If you mean parts having a dichromate over-plate ("goldish appearing"), very few Corvette parts of the C2 period had that. The original retainers were natural zinc finish, as I recall.

Your cap was semi-gloss black, more "semi" than gloss.

[Gary B.]

Re: 65/66 Std. Brake Master Cylinder Cap

Wanting to restore an Original M/C cap. Seems that they are gold plated and then Painted black (is it semi gloss or gloss) . Am I correct...

[Dave S.]

Re: 65/66 Std. Brake Master Cylinder Cap

Gary,
i don't have a 66 JG so I can't refer to the photos but I don't think cadmium dichromate would have have a goldfish tint. So if I want to go the plating route as opposed to S-G black paint seems a light cad might be best. Sound correct.??

[Joe L.]

Re: 65/66 Std. Brake Master Cylinder Cap

Gary,
i don't have a 66 JG so I can't refer to the photos but I don't think cadmium dichromate would have have a goldfish tint. So if I want to go the plating route as opposed to S-G black paint seems a light cad might be best. Sound correct.??

Dave-----


Cadmium dichromate (a term for cadmium plating with a dichromate overplate) does have a "goldish" coloration.

[Gary B.]

Re: 65/66 Std. Brake Master Cylinder Cap

Dave,

I’m just repeating what is in the latest JG. It says cadmium dichromate. I have a NOS non-power cap, GM 3871541 and it definitely has a dichromate, goldish hue to it. Definitely not just standard, silver cad or zinc. So, the service replacement parts came with the dichromate finish for certain.

Gary

[Dave S.]

Re: 65/66 Std. Brake Master Cylinder Cap

Joe/Gary,
Thanks for the guidance. Now I understand how to proceed.

[Gary B.]

[Kent S.]

Re: 65/66 Std. Brake Master Cylinder Cap

As I was getting my '65 ready for judging I was told by other judges and the JG confirmed, that the cap was painted so that's what I did to my "gold" one. I was told that the '66's were the dichromate.