Re: 1956 Power Booster Installation

Posted by PackardV8 On 2009/6/4 12:40:36

Radio:

Tell us about the metering valve and proportioning valves.

They don't really look like a prop valveto me and the metering valve is usually BETWEEN the front calipers.

The metering valve between calipers is to slightly delay the caliper motion to allow pressure to build up enuf to over come the rear spring tension of drum brakes.

Here is the part that is hazy to me i mite not have all of it detailed just rite:

In some (BUT NOT ALL) dual cylinders the the secondary piston is spring loaded to the primary piston which means that the secondary (to the rear) can delay or reduce pressurea bit until a certain limit has been reached. But THis somewhat contradicts the metering valve issue.

MY POINT is that we need to come to grips with what is needed here in pressure control in order to fine tune the braking.

Even the original BTV on my car caused alot of nose dive on hard braking.

I'm not real sure what needs to be done for the fine tuning or valving yet. NONETHELESS my set up does just fine. I'm running drum on all 4our wheels and plan to remain with drum.