For the last several years I've been researching the possibilities in rebuilding the different brake valves used on American muscle cars. I started with Fords because I needed to rebuild the combination valve used on my 1970 Mustang, but lately I've been looking at the valves used on AMC, GM, and Chrysler vehicles, too. I've recently had some success in producing a kit for the rear proportioning/pressure regulating valve used on 1967 - 1969 Camaros and I'm currently working on a kit for the pressure differential valve/switch. With a little help I think I can produce a kit to rebuild the metering valve, too.
I've seen some pictures of the insides of the metering valve, but I need to see one up close to measure the seals properly. Does anyone have a used original valve that they'd be willing to let me borrow for autopsy and research purposes? I'll rebuild it for free and return it to you if I can come up with the parts for a kit. It may take a few months, so I need to work with someone who's not in a hurry. I'm keeping my eye on eBay and I'll buy one there if the price is right, but working with a volunteer may be quicker.
Thanks for your help. I'm looking forward to learning more!