Checking the rear rotor run out on my 67 because of a leaking caliper and squeak while driving. The attaching rivets were removed years ago when I had the bearings serviced and my rotors had some rust pits. I took the rotors to the machine shop and had them shot peened to remove rust then kiss cut approx .005 each surface, they are still approx. 1.230 also had them countersink the rivets holes for flat head screws.
Installed them back on same side as removed with the screws, the drivers side according to my dial indicator mics at .0025 run out but the passenger side mics at .014 1/2" from rotor edge, all surfaces clean without burrs. I took a aluminum pie plate approx .012 and made a shim and installed it on the lowest spot. This spot was over one of the flat head screws and not over a wheel lug, after tightening the screws runout is approx the same as other side at .0025.
My question is about the shim thickness being to thick at .012 causing to much gap around the rotor and is the run out going to change after I tighten the lug nuts to 65 70 ft.lbs. My thoughts this morning are with measuring .014 run out at the rotor edge I should have only had to use .006 or .007 shim at the screw hole instead of the .012 pie plate shim.
All comments are appreciated, I am feeling like I need to go back and take another look, I removed and installed the dial indicator a few times and the .0025 was consistent. Down the road I plan to install new rotors because of the rust pits near the outside edges of these original rotors but I needed to correct the squeak and leaking caliper in the meantime.
PS, Mrs. Smith pie was very good but belly very full this morning.
Installed them back on same side as removed with the screws, the drivers side according to my dial indicator mics at .0025 run out but the passenger side mics at .014 1/2" from rotor edge, all surfaces clean without burrs. I took a aluminum pie plate approx .012 and made a shim and installed it on the lowest spot. This spot was over one of the flat head screws and not over a wheel lug, after tightening the screws runout is approx the same as other side at .0025.
My question is about the shim thickness being to thick at .012 causing to much gap around the rotor and is the run out going to change after I tighten the lug nuts to 65 70 ft.lbs. My thoughts this morning are with measuring .014 run out at the rotor edge I should have only had to use .006 or .007 shim at the screw hole instead of the .012 pie plate shim.
All comments are appreciated, I am feeling like I need to go back and take another look, I removed and installed the dial indicator a few times and the .0025 was consistent. Down the road I plan to install new rotors because of the rust pits near the outside edges of these original rotors but I needed to correct the squeak and leaking caliper in the meantime.
PS, Mrs. Smith pie was very good but belly very full this morning.
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