Caddilac XTS 14" Brembo brakes on a Mustang.

[Mustang5L5]

Just messing around with this setup, no intention of running it, but pretty impressed how it fits together. Not strictly 100% bolt on though..but can be.

Cobra 13" rotor on the right.

They are Junkyard Caddy XTS Brembos, and GT500 14" rotors. I paid $90 for the paid of brembos from a recycler, and $70 a rotor. Grand total $230.

However, they need some modification, Approx 0.075" needs to be machined off the mounting flange of the caliper, and the caliper mount inserts need to be removed and replaced with modified machined inserts with a 1mm offset. Basically...you need some machining skills and equipment to do this swap. After that....100% bolt on

But...I don't have wheels big enough to clear these, so this is the end of the road. just a fun experiement.

 

[KRUISR]

Well it's happening....

Here is my mock up with rim.



18x9 Saleen Reps, 14" x 1.26" Shelby rotors, XTS calipers. Needed to shave about 0.075 off the caliper mount flanges (as Mustang5L5 said), made a set of inserts with 1mm/3mm offset hole like he has made. I get 0.030/0.036 side to side clearance between rotor and caliper. Everything spins smooth with no contact.

I also cut a little more material to allow calipers lower on rotor.


I clearanced into the caliper to the blue marks...

 

[KRUISR]

Wheels are 18x9 with 24mm offset. No spacers required.

 

[Mustang5L5]

Photos don't do that setup justice. It's a massive brake/rotor combo.

 

[KRUISR]

For comparison...



13.23" rotor with Cobra caliper vs 14" and XTS Brembo. Same wheel.

 

[stanglx2002]

Looking forward to seeing this completed, since I have been thinking of changing the calipers out for these over the custom 05-09 Mustang GT ones I have now on the 14" rotor.

 

[KRUISR]

Pads just barely stick up above rotor.



And as I said above, I have 0.030 and 0.036 clearance between rotor and caliper.

 

[Mustang5L5]

The XTS caliper and 14” rotor almost fits better than the ATS/13” setup

 

[KRUISR]

View: https://youtu.be/MGleMy_D9j8


Rotor clearance

 

[Steel1]

Nice !
What booster / mc set-up do you need with that combo ?

 

[KRUISR]

My current caliper setup is Lincoln LS calipers all around. That's dual piston (40/38) in front and 43 in the rear. I am using a '95 booster and MC and prop valve from a '00 non ABS car - I believe it is 1.0625" bore. My plan is to keep the Lincoln rears and keep MC/booster as I already have installed.

 

[Mustang5L5]

Nice !
What booster / mc set-up do you need with that combo ?

When i was going to install the ATS setup (same front caliper piston sizes) i was going to use the 94-95 GT 1 1/16" MC with the taurus 43mm rear calipers

 

[stanglx2002]

Any pictures of the insert or details of making it?

 

[Mustang5L5]

I have the machine prints somewhere on here in a thread. I’ll have to search when back on a computer

 

[KRUISR]

I used Mustang5L5's prints as reference and crudely turned out some. I used an old 1" shaft (out of the scrap bin at work) and turned it down to the 0.793" diameter in the prints.

I also elongated the holes in the caliper mount to better allow moving caliper closer to hub center.

 

[95BlueStallion]

You guys are making me want to pay you to set this up and ship it to me. I don’t have the machines to do the work, but a big brake upgrade on my list of next mods. I still have rear drums, and wanted to build a full on kit.

 

[Mustang5L5]

There’s a guy who sells them already done. Same dimensions as what I modeled up. Even comes with a rotor spacer if you don’t want to mill the caliper. It’s meant for the ATS brake setup, but the inserts will work on the XTS setup too. Unsure the dimensions on the rotor spacer though

S&S engineering on FB

 

[KRUISR]

Based on my mock up, I shaved the 0.075 (or approximately) off the caliper, added the inserts and that's it. No other spacers under rotor or under wheel.

To shave the material off the caliper, I used an angle grinder with a stripping disc and a digital caliper to check my progress. I also repeatedly test fit on spindle and rotor to balance the side to side spacing between caliper and rotor.

 

[StrokedBird]

So what year model XTS did you use for the calipers? I'm very interested in doing this swap.

 

[Mustang5L5]

2013-2019 XTS base model (non-V) have the brembos that work with the 14” rotor

2013-2019 ATS have a similar brembo (same piston size and same exact pads) that use the 13” rotor.