PBR Caliper Prep for Boat's SHO

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Eric VerValin

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Check out StopTech's (or similar) sites about "warping" rotors. You can't really overheat a rotor, and they don't really "warp" (at least, many reputable folks like Carroll Smith said they never saw it happen).

You can imprint a pad if you're not careful and the brakes are hot, which results in the pulsation that a lot of people will call a "warped rotor", but that's curable and also easily avoidable.

Brake rotors are probably the most heat-tolerant component on the car. I've got 'em up to ~1500F+ repeatedly without any ill effects. If you're going to track a car or drive a lot of mountain roads (or something) and want the calipers to stay pretty, though, you do need to pick a paint/finish that's heat tolerant.


I think I actually just read that article Shelby did.. pretty interesting. Kind of makes me think the semi-metallics of only 10 years ago were kind of a crappy compound, and were a little too abrasive if you got on them kind of hard. Come to think about it.. they always squeaked... the PFCM pads I have now, I haven't heard a peep out of in 20k miles.

So maybe there is a lot to be said about the pads... I just notice the difference in rotor cost, and wasn't sure if it was strictly the warranty I was paying for. Was a good read tho. :)

Shelby Braking Article
 

Shoaz

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I think I actually just read that article Shelby did.. pretty interesting. Kind of makes me think the semi-metallics of only 10 years ago were kind of a crappy compound, and were a little too abrasive if you got on them kind of hard. Come to think about it.. they always squeaked... the PFCM pads I have now, I haven't heard a peep out of in 20k miles.

So maybe there is a lot to be said about the pads... I just notice the difference in rotor cost, and wasn't sure if it was strictly the warranty I was paying for. Was a good read tho. :)

Shelby Braking Article

Carroll Smith != Carroll Shelby. That article was written by Carroll Smith, who, sadly, passed away a few years ago.
 

kevinspann

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According to Storm-Chaser, The PBR Upgrade has the same effectiveness as the 96+ brake upgrade

After doing some reading on Thunderbird forum it seems as though the '94-'97 Thunderbird guys prefer the Mustang PBR caliper over the 11.6 upgrade (Thunderbird Sports, Lincoln Mark VIII) From what I read, it was the better choice for them...but the Taurus is a different car after all.

Has anyone made a bracket to use the PBRs with the 11.6" rotor?
 

bubba

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I don't think so man... I think it's still 1 way or the other It would be nice to see if it would work! anything pos.!





After doing some reading on Thunderbird forum it seems as though the '94-'97 Thunderbird guys prefer the Mustang PBR caliper over the 11.6 upgrade (Thunderbird Sports, Lincoln Mark VIII) From what I read, it was the better choice for them...but the Taurus is a different car after all.

Has anyone made a bracket to use the PBRs with the 11.6" rotor?
 

K-Dawg

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After doing some reading on Thunderbird forum it seems as though the '94-'97 Thunderbird guys prefer the Mustang PBR caliper over the 11.6 upgrade (Thunderbird Sports, Lincoln Mark VIII) From what I read, it was the better choice for them...but the Taurus is a different car after all.

Has anyone made a bracket to use the PBRs with the 11.6" rotor?

Lots of people modify the Cobra PBR calipers to work with 11.6" rotors. Its not hard at all, and the Cobra PBRs are superior to the Mustang PBRs.
 

bubba

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didn't know that.... I have some reading to catch up on! I need to start searching more stuff!



Lots of people modify the Cobra PBR calipers to work with 11.6" rotors. Its not hard at all, and the Cobra PBRs are superior to the Mustang PBRs.
 

boat

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Start catching up here and here. After reading those, makes me want to that. Cobra calipers with the 96-99 11.6 rotors. :) :thumb: FTW



didn't know that.... I have some reading to catch up on! I need to start searching more stuff!
 
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kevinspann

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I knew about modifying the bracket for the Cobra calipers, but I was only curious about using the regular Mustang PBRs due to price. They can usually be found used for around $100 a pair, vs at least double for the Cobra setup.
 

1995mtxsho

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GT PBR>'96 Upgrade.
Ive used both on my '95 and the PBRs arent still on their just to be different. Better feel, less rotational mass, and better at stopping.

Honestly, I understand the math and physics well, but they just work better.

I too, have been brainstoming about making bracket adapters for the GT PBRs to fit 11.6" rotors, I just havent had time to make some.
 

kevinspann

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GT PBR>'96 Upgrade.
Ive used both on my '95 and the PBRs arent still on their just to be different. Better feel, less rotational mass, and better at stopping.

Honestly, I understand the math and physics well, but they just work better.

I too, have been brainstoming about making bracket adapters for the GT PBRs to fit 11.6" rotors, I just havent had time to make some.

I see we're on the same page. I did some brainstorming too, and i don't think making a bracket will work. The center line of the mounting holes needs to move up only 0.4" which would not leave anywhere near enough room to make a bracket that will bolt to the knuckle, and attach the GT PBRs.

Unless of course, an entirely new caliper bracket was made, but there would then be no cost benefit, as the Cobra calipers could then be done much more easily. The cobra caliper bracket has enough meat on it to be redrilled to fit the smaller rotor.
 

1995mtxsho

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I see we're on the same page. I did some brainstorming too, and i don't think making a bracket will work. The center line of the mounting holes needs to move up only 0.4" which would not leave anywhere near enough room to make a bracket that will bolt to the knuckle, and attach the GT PBRs.

I assure you that a simple adapter bracket will work, you are just thinking about it in one dimension.

I am all over it, but metal sources and time are holding me up.

Granted the cobras would be easier, but what's the fun in that.
 

38SHO

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couldn't u modify the GT calipers in essentially the same way people modify the cobra caliper bracket to fit on the 11.6" rotors

they just do some grinding and relocate holes........ no need to make up a different bracket, I bet something like this could be made to work
 

K-Dawg

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couldn't u modify the GT calipers in essentially the same way people modify the cobra caliper bracket to fit on the 11.6" rotors

they just do some grinding and relocate holes........ no need to make up a different bracket, I bet something like this could be made to work

No, because the GTs use a smaller rotor, and Cobras use a larger rotor.
 

38SHO

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No, because the GTs use a smaller rotor, and Cobras use a larger rotor.

yes your right, this would require a piece like your 11.6" rear setup has for the bracket.........


I wonder how much of the rotor the pads contact with the mustang setup on 11.6's
 

boat

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On the GT PBR's or the Cobra PBR's? I would be wondering the same thing.

I have a brand new set GT PBR's, well reman'd. I am considering going to the Cobra PBR's w/the 11.6 rotors. Not sure which setup to go with.

I wonder how much of the rotor the pads contact with the mustang setup on 11.6's
 

boat

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Update on the PBR caliper prep

Bubba and I spent some time on the calipers last weekend (busy week last week) making some progress, not done yet... I will put more pics of these up as progress is made, and then when we do installation. These will be sweet when we get these in. Will have some better stopping power :woo-hoo: :woo-hoo:

See below:

Prior to priming, and cleaning with lacquer thinner

019a.jpg


020a.jpg


Starting priming

021a.jpg


Taped off

023a.jpg


More Priming from Bubba's mad painting skills

025a.jpg


Starting to add some color, :dribble:

027a.jpg


Not done yet, not so good of results of trying to paint in the dark. Dropped these off to Bubba for him to put his mad painting skills to work to finish them. :thankyou: :thankyou:

030a.jpg
 

K-Dawg

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FYI, the labels on the calipers are wrong. When you install them, make sure the bleeders and retaining pins are both on top.
 

boat

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Yeah, I realize that. I marked those, a long time ago, before I knew that. Thanks for the reminder, K-dawg. :) :thumb:
 

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