Quote:
Originally Posted by CMcAllister
The rubber retainers did a reasonable job of keeping the pushrod in the MC piston. It is a one time use item. Once it's jerked out of the piston, it won't work. And they can be hard to find new.
Aftermarket pushrods are not usually made with the groove for the ring either.
Most of the time, the brake light switch, and brackets, are removed on race cars. That acted as a stop for the pedal in OE system.
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This is what I'm getting at. Thanks, CMc.
I'm looking for a source for the retaining ring that you mention. I'll post my results.
I looked under the dash of my '74 Dart Sport, and I saw what you mention about the brake light switch bracket. It keeps the pedal from being pulled out of the MC.
I have an aluminum MC from Dr. Diff. It came with a new retainer ring.
When I installed the alum MC in my car (several years ago), I guess I saw that the pushrod is retained by the clip, and the brake light switch bracket. I didn't realize that when a Mopar style MC is installed in something other than a Mopar (or a Mopar without the brake light switch and bracket), it could be installed in a manner that would allow the pushrod to fall out. (Or the driver's foot could inadvertently lift the pedal out of the retaining ring if the brake light switch and bracket were removed on a Mopar.)
I hope I'm being clear. I'm not a technical writer, for sure, lol. I was in a street car years ago that lost it's single MC. The driver made a valiant effort using the E-brake and avoiding obstacles until a telephone pole ended our ride. One passenger lost an eye, one had a collapsed lung, I had a back injury that piled on to other back problems my physical working career created.
EDIT: Here's a link to Dr. Diff. They have it, and also Detroit Muscle Technologies has it.
https://www.doctordiff.com/manual-br...r-grommet.html