Z-51 upgrade questions

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Oct 18, 2011 | 09:26 PM

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Z-51 upgrade questions

I have an 08 coupe and I purchased a GM Z-51 upgrade kit which included GM front and rear z-51 rotors and brackets. These new rotors look differently from other rotors that I have purchased at other part stores, these rotors appear to have a gray paint applied to the entire rotor. My question is, should I remove this coating before installation or should I just let the pads wear the coating off???? Also, what is the torque spec on the caliper brackets?

Oct 18, 2011 | 10:08 PM

frankgtb

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From: TORONTO

where did u buy the kit?????

gm or aftermarket ????

Oct 18, 2011 | 10:52 PM

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Quote:

Originally Posted by frankgtb

where did u buy the kit?????

gm or aftermarket ????

This is a GM OEM Z-51 kit with GM part numbers

Oct 19, 2011 | 07:49 AM

camarochevy19702

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let the pads wear the coating off

Oct 19, 2011 | 09:49 AM

NYC6

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From: Long Island New York

pretty sure thats a zinc wash that will prevent rusting down the road. Install and the pads will remove the material in the contact area.

Oct 19, 2011 | 09:35 PM

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Anyone know the torque for the front and rear caliper bracket bolts?

Oct 20, 2011 | 06:43 AM

mfquinn

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From: Jacksonville FL

You can paint the hats if you don't like the grey. I painted mine black, and the pad wears off the rest of the grey. I just painted over the grey and it has lasted and looks much better.

If you aren't going to be pulling them on and off, use some locktite on the caliper bolts. Also, grease the pins.