4th gen rear brake knock back....need solution

[Den34]

I had success by welding a small bead on the end of the axle and grinding or "tuning" it so size allowing a small amount for heat expansion. Ran those axles for years.
Bob

[Supercharged111]

I had success by welding a small bead on the end of the axle and grinding or "tuning" it so size allowing a small amount for heat expansion. Ran those axles for years.
Bob

Uncanny. Ryan just mentioned the same thing to me. I measured .029" play on the right side and .044 on the left, and .007" on the diff pin where the axles have been smooshing into it.

[Al Fernandez]

We'll have to measure the play on mine since it has c clip eliminators and I have plenty of knockback.

[Supercharged111]

Dorman clips came in today, they measured .159" thick. My old ones were .152" and .153", so definitely thicker. That plus a rosette weld on the axle end should have me good to go here. Going to leave a .010" gap per side, or as close as I can get. That'll eliminate.053" of end play. Along with new rear pads and tighter front hubs should be a more confidence inspiring car.

[Supercharged111]

I rosette welded the axles and got it down to ~.0115" on one side and ~.0135" on the other. I feel like the c clips got rid of more than just the 6 and 7 thou that I measured. We'll have to see how the car feels now at a cheatin' bastard practice session.

[liquidroam]

Maybe try this....???? https://www.pro-touring.com/threads/...ad-knock-back?

[Supercharged111]

Maybe try this....???? https://www.pro-touring.com/threads/...ad-knock-back?

I know on the older GMT400 and GMT800 trucks that the residual valve lived inside the master cylinder and that they used different valves for drum rear vs disc. I wonder if the Camaros have it inside the master or inside the now non-existent ABS pump?