CRG Discussion Forum

Camaro Research Group Discussion => Originality => Topic started by: john302 on November 29, 2024, 05:35:52 PM

Title: 67-69 Disc brake shield plating
Post by: john302 on November 29, 2024, 05:35:52 PM

Were  the original disc brake shields galvinized or dull cad plated ? looked at some original ones and they looked dull silver cad plated. Thoughts ? thanks

Title: Re: 67-69 Disc brake shield plating
Post by: 169INDY on November 30, 2024, 05:01:27 AM

My thoughts are they were Galv. based on low mile and hidden crevice non exposed portions observed. The color, grain and mottled look convinced me.
What does the Judging manual(s) specify & Jerrys Books recommend as coating ??
The interesting question has been were they flat Sheet metal galv prior to stamping or dip galvanized after pressing. I believe that the GM spec was for Galv (vice Electro Plating) since it has a better long term rust performance than zinc or cad plating based on the duty of a disc brake rotor splash (water) protection.

I have found platers Hostile to hobbyists, and never even found one avail to perform Low volume (Hot or Cold) Galvanized Auto Parts, so I have settled on Brite Clear Zinc as my only option.

https://www.yenko.net/forum/showthread.php?t=165669&highlight=Galvanized

Jim

Title: Re: 67-69 Disc brake shield plating
Post by: buenymayor on November 30, 2024, 08:02:51 AM

IIRC, Jerrys book states the dust shields were silver dichromate plated, and the caliper mounts were gold dichromate plated. Steering knuckles, spindles, and tie rod ends were bare cast iron.

Title: Re: 67-69 Disc brake shield plating
Post by: john302 on November 30, 2024, 10:26:51 PM

I think Jerry put that in has book because its the only plating available  ?

Title: Re: 67-69 Disc brake shield plating
Post by: JohnDS on February 01, 2025, 02:18:28 AM

The disc brake dust shields were most definitely stamped from galvanized metal originally.
At least from what I've discovered on '67-'68.


John