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Thread: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

  1. #16
    is250sp's Avatar
    is250sp is offline Cadillac Owners Enthusiast
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    That sucks man. Even if you "made it to work" I'd still worry since it wasn't designed for it. These are brakes we talking about, not some rear spoiler can be made to work. At least amazon has a good return policy.


  2. #17
    gohawks63's Avatar
    gohawks63 is offline Cadillac Owners Connoisseur
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    Quote Originally Posted by Mistercoffee2
    I know very little about the AWD setup. Many of the part numbers are not the same as the RWD for obvious reasons. The front Caliper on the 2012 AWD is in front of the knuckle, and on the RWD it is in the rear of the knuckle. Because of this I'm not willing to say the MOD will work. Are yours like this? [Credits: Photo of beautiful Coupe lifted from gohawks63.]
    Alas. She is in search of a new home as I gave her up for a V coupe.

  3. #18
    conedoctor is offline Cadillac Owners Connoisseur
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Compare the master cylinder and bias valves between the two cars.

  4. #19
    StEvO_1222's Avatar
    StEvO_1222 is offline Cadillac Owners Member
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Quote Originally Posted by is250sp View Post
    That sucks man. Even if you "made it to work" I'd still worry since it wasn't designed for it. These are brakes we talking about, not some rear spoiler can be made to work. At least amazon has a good return policy.
    I still have a small bit of hope after looking at the part codes for both the RWD and AWD J55 Calipers.
    Apparently they are mirrored. The Right front Caliper part for RWD cars is the same as the Left front Caliper part for AWD cars.
    So if I am able to mount the Left caliper on the Right and vice versus for the other caliper I may be in business.

  5. #20
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Quote Originally Posted by StEvO_1222 View Post
    I still have a small bit of hope after looking at the part codes for both the RWD and AWD J55 Calipers.
    Apparently they are mirrored. The Right front Caliper part for RWD cars is the same as the Left front Caliper part for AWD cars.
    So if I am able to mount the Left caliper on the Right and vice versus for the other caliper I may be in business.
    That's good news. I will be waiting to see the results.

  6. #21
    StEvO_1222's Avatar
    StEvO_1222 is offline Cadillac Owners Member
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Quote Originally Posted by conedoctor View Post
    Compare the master cylinder and bias valves between the two cars.
    Both the ABS Modulator Valve and Master Cylinder part numbers are the same between the 3.6 and the CTS-V

  7. #22
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Quote Originally Posted by StEvO_1222 View Post
    Both the ABS Modulator Valve and Master Cylinder part numbers are the same between the 3.6 and the CTS-V
    I also verified this before starting the MOD.

  8. #23
    StEvO_1222's Avatar
    StEvO_1222 is offline Cadillac Owners Member
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Starting to feel a bit better about the possibility of this working on the AWD models.
    Just spoke with my brother who is a automotive mechanical engineer and he seems to think there will be no dangerous problems with the install. Assuming there are no clearance or mounting issues.
    Only thing left is to test fit the parts and see what happens.
    Now I just need to get my hands on a torque wrench that goes up to 166 ft/lbs. Any thoughts on where to get or rent one?

  9. #24
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Quote Originally Posted by StEvO_1222 View Post
    Starting to feel a bit better about the possibility of this working on the AWD models.
    Just spoke with my brother who is a automotive mechanical engineer and he seems to think there will be no dangerous problems with the install. Assuming there are no clearance or mounting issues.
    Only thing left is to test fit the parts and see what happens.
    Now I just need to get my hands on a torque wrench that goes up to 166 ft/lbs. Any thoughts on where to get or rent one?
    I got a loaner 36mm (rear hub) from Auto Zone, don't know what other tools they loan.

  10. #25
    mrcoupe2002 is offline Cadillac Owners Member
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Install wheel (140 lb ft):Wheel with new caliper:


    Just curious why you tightened the wheels down with that torque setting. The manual calls for 100 lb ft of torque for the wheel nuts. The conversion for this is 140 N m of torque, could this just be a typo?

    Been reading this thread because I'm thinking of doing the conversion myself to offset the extra load on my OEM brakes and longer stopping distances after installing larger rims on the car.

  11. #26
    StEvO_1222's Avatar
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Quote Originally Posted by Mistercoffee2 View Post
    I got a loaner 36mm (rear hub) from Auto Zone, don't know what other tools they loan.
    Just picked up a loaner wrench from Pepboys.
    Going to test fit everything this weekend. Finger Crossed

  12. #27
    StEvO_1222's Avatar
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Test fit the brakes today on the CTS4. Everything went quite well. The calipers and rotors fit perfectly.
    The Goodridge brake lines for the CTS-V however, are not long enough. Apparently Goodridge makes a stainless kit for the CTS4 (part # 15018). So I will return the CTS-V lines and go for the CTS4 lines.
    The only other hiccup is the clearance of my OEM 19" wheels. They will require about 8-10mm spacers in order to work with my wheels.



  13. #28
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Quote Originally Posted by mrcoupe2002 View Post
    Just curious why you tightened the wheels down with that torque setting. The manual calls for 100 lb ft of torque for the wheel nuts. The conversion for this is 140 N m of torque, could this just be a typo?

    Been reading this thread because I'm thinking of doing the conversion myself to offset the extra load on my OEM brakes and longer stopping distances after installing larger rims on the car.
    Below is from the ALLDATA 2011 CTS-V manual. I also have the hard copy manuals for the 2008 CTS and the spec is the same.
    Attached Images

  14. #29
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Quote Originally Posted by StEvO_1222 View Post
    Test fit the brakes today on the CTS4. Everything went quite well. The calipers and rotors fit perfectly.
    The Goodridge brake lines for the CTS-V however, are not long enough. Apparently Goodridge makes a stainless kit for the CTS4 (part # 15018). So I will return the CTS-V lines and go for the CTS4 lines.
    The only other hiccup is the clearance of my OEM 19" wheels. They will require about 8-10mm spacers in order to work with my wheels.
    Wow, are you sure, 8-10mm is a lot. Are your wheels 18"? In the photo it looks like a smaller spacer would work but maybe you did not have them tightened. If you have to go 8-10mm you will have to replace the studs with longer ones. On a positive note, the 11mm studs from D3 set the tires out and look great. They also come with new studs. I have no idea if they are recommended for AWD.

    Also, did the AWD not have a splash guard behind the rotor?

  15. #30
    StEvO_1222's Avatar
    StEvO_1222 is offline Cadillac Owners Member
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    Re: [DIY] Install CTS-V Brembo Brakes on CTS (Part 3, INSTALL NEW PARTS, FRONT)

    Quote Originally Posted by Mistercoffee2 View Post
    Wow, are you sure, 8-10mm is a lot. Are your wheels 18"? In the photo it looks like a smaller spacer would work but maybe you did not have them tightened. If you have to go 8-10mm you will have to replace the studs with longer ones. On a positive note, the 11mm studs from D3 set the tires out and look great. They also come with new studs. I have no idea if they are recommended for AWD.
    I was not able to completely bolt the wheel on flush to the hub due to the contact with the caliper. There's about 5mm gap behind the wheel. They are OEM 19" wheels BTW.
    The D3 spacers look like a quality product but I think I am going to go with these from Weapon X for a lot less.
    http://weaponxmotorsports.myshopify....-wheel-spacers
    I assume I will have to add spacers to both front and back to keep the AWD track equal and happy. If anyone has any info on whether this is necessary that would be great.

    Quote Originally Posted by Mistercoffee2 View Post
    Also, did the AWD not have a splash guard behind the rotor?
    Here's a pic of the splash guard. I was able to bend it out of the way for the test fit. I may just trim these shields down and get a refund on the V shields.

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