Re: [DMCForum] rear brake rotors

["Jim Strickland" <ihaveanaccount@xxxxxxxx>]

Hm, I just bought two front rotors from Grady just a couple days ago. 
I'll let you know how it goes.  Still so, nothing could be worse than
what I had...

Jim

On Mon, 03 Mar 2003 09:23:27 -0600 KATHLEEN SARFARAZ
<asarfaraz@xxxxxxxxxxx> writes:
> Damn, I feel sorry for you. I will not buy PJ Grady Brake rotors.
> 
> 
> 
> ----- Original Message -----
> From: Walter Coe <Whalt@xxxxxxx>
> Date: Monday, March 3, 2003 0:47 am
> Subject: [DMCForum] rear brake rotors
> 
> > <span><p><span><p>
> > 
> > 
> > <tt>
> > Re: [DMCForum] Avi is Back! - Walt isn't
> > 
> > 
> > 
> > Today I replaced my rear brake rotors (again) and accidentally let 
> the
> > 
> > master cylinder run dry while bleeding.  So... I have to wait 
> > until tomorrow
> > 
> > to buy master cylinder bleed kit before I can get the car back on 
> > the road.
> > 
> > 
> > 
> > The issue with my brakes: one of the original rear rotors was 
> > chipped, so I
> > 
> > had to replace it.  I got a new pair from PJ Grady, and they 
> > sucked royally.
> > 
> > They had excessive runout which was so bad that if I had them cut 
> > then they
> > 
> > would have been under spec.  And these were new rotors!  
> Interestingly
> > 
> > enough, I had no problems with brake pulsation.  The runout wasn't 
> 
> > thickness
> > variation but a matter of not having the hub parallel with the 
> > rotor.  As
> > 
> > the rotor wobbled, it pushed the brake pads apart.  This seemed to 
> 
> > not be a
> > 
> > problem at first.  Rob told me over the phone that this wouldn't 
> > hurt the
> > 
> > calipers.  As the rotor turned, the wobble slapped the hand brake 
> > pads and
> > 
> > caused one of them to fall off.  (I'm not the first to have this 
> > problem
> > with PJ Grady rotors, BTW.)  So I put on new pads and adjusted the 
> 
> > hand
> > brake with lots of play to give room for the rotor to wobble.  
> Soon
> > 
> > afterwards the brakes feel glazed.  I take the wheels off; and 
> > sure enough,
> > 
> > there is a bluish glossy layer all over the rotor.  So I sand it 
> > off and was
> > 
> > fine for a while.  This was about a year ago.
> > 
> > 
> > 
> > Now fast forward to the present: the glaze is back and stopping 
> > the car
> > 
> > requires much more pressure on the pedal.  So... I put another set 
> 
> > of rotors
> > 
> > on.  These are NOS from DMCJoe while he had a half-off sale about 
> > 2 years
> > 
> > ago.  One rotor has no runout that I can tell.  The other has just 
> 
> > a speck
> > 
> > of runout -- not even worth mentioning.  Hopefully this will solve 
> 
> > my rotor
> > 
> > glazing problem.
> > 
> > 
> > 
> > And the moral of the story?  Always buy your parts from DeLorean 
> > specific
> > vendors and you won't have these kinds of issues.  Oh wait!  
> > That's what I
> > 
> > did.  So much for that idea.  Well, I have one more beer in the 
> > fridge.  :-)
> > 
> > 
> > 
> > Walt
> > 
> > 
> > 
> > </tt>
> > 
> > 
> > 
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