Brakes shuddering / grinding

[flyinbolts]

New pads, rotors, calipers, drums, shoes, and cylinders.
I've noticed some odd patterning on the shoes (not a normal all in one wear but more of a wavy pattern). It shudders and the whole car feels weird when braking. But they do stop and hard!
Suspicion is the shoes are bad or out of round?

[bull]

I'm going to guess the shoes/drums need to be "burned in" good before they'll work as a team. Most likely, if everything is new, the drums were not cut or cast perfectly and same goes for the shoes. There may be a coating of gunk on either the shoes or drums, or both. I would get a little rough with the rears but not the fronts as you don't want to warp the rotors. To burn the rears only I'd take the car to an abandoned area out behind a warehouse on a Sunday and run the car up to 45 mph and hit the E brake about 10-15 times. It would be best to not just pounce on it and lock the tires up but get aggressive enough to get the rears good and hot.

[hemihead]

Did you clean them off after you installed them ?

[flyinbolts]

I'll keep that in mind - since it's on a farm... :-D I'll just ask them to flatten the field out before they plant...

As for cleaning them off - I didn't know there was such a thing? I used a little brake cleaner to get some gunk off but not on the whole shoe/drum. Would this be the same sort of thing on my grand prix where my brakes would smoke a little after changing the pads and rotors? Figured it was storage oil burning off - didn't think it'd cause something like a stutter in braking for drums though?

[hemihead]

New Rotors and Drums need sprayed off really , really well because they have oils on them from machining and for storage purposes . Plus even oil from your skin on your hands can cause brakes to grab .