Backing plates

[brian styczynski]

What is the best and easiest way to check if backing plates are bent? Make a lathe adapter out of an axle retainer and measure runout seems to be the most accurate but tedious. Taking one off the car, place in a drum and measure height?

One you determine how non-flat it is, how do you straighten them?

I don't see availability of new backing plates (rear) online.

Keep in mind disc brakes are not an option in a vintage applications.

[Ed Womer]

If they don't look straight then remove from the car and lay on a flat surface. I haven't tried to straight any but I am sure it could be done and gotten close.

Ed

[Dietmar]

Brian:
I have always looked at the space ( distance) between the backing plate and the drum. You can use a screwdriver to pry between the backing plate and the drum for minor bends.

As for new, SoCal Imports has "rebuilt" units. There are new out there- (probably Chinese) but they are mostly for 68 upward- which is not an issue except for the two adjuster holes in the backing plate.

Hope this helps.

Dietmar
Quixote Racing