|NOS Ford 65-66 Mustang Disc Brake Proportioning Valve. Image ©Virginia Classic Mustang Inc.|
If you are really into the detail end of the 65-66 Mustang and Shelbys, you may find this post interesting. A Kelsey Hayes disc brake proportioning valve was originally installed on the 65-66 Mustangs with factory front disc brakes.
Rather than discuss the function of this part, this post is more about the detail and restoration. There seems to be a widely held thought that this valve was originally a bluish-gray color. All of the New Old Stock / Ford Service parts that I have seen are certainly this color, and perhaps some of the ones originally installed on the assembly line were also this color.
|Original Black Paint Finish shown on Disc Brake Proportioning Valve from a June '65 Production San Jose Mustang (Early '66 GT350) Image ©Virginia Classic Mustang Inc|
|Original Black Paint Finish shown on Disc Brake Proportioning Valve from a very late Production San Jose Mustang (Very Late Production '66 GT350). Image ©Virginia Classic Mustang Inc|
The "end discs" on these valves are dated. The numbers indicate the day of the year along with the year.
|End Disc stamped "81-5." This is the 81st day of 1965, which is March 22, 1965. This disc was clear zinc plated for restoration. Image ©Virginia Classic Mustang Inc|
|Disassembled Proportioning Valve with Zinc DiChromate Plated Nut and Clear Zinc Plated Adjusting Stud and End Disc. Image ©Virginia Classic Mustang Inc|
|Valve has been Cleaned, Glass Beaded and then Epoxy Primed before sending out for Brass Sleeving and Rebuild. Image ©Virginia Classic Mustang Inc|
|Rebuilt valve reassembled with the newly plated original parts and refinished with black paint. Image ©Virginia Classic Mustang Inc|
Image ©Virginia Classic Mustang Inc
|Dated end disc. Image ©Virginia Classic Mustang Inc |