Installing ATS Brembos on the Cobra.

[Blkkbgt]

I am going to preface this by stating I am pist the **** off right now!

I finally pulled apart my cardone calipers this afternoon trying to pull out a small victory on my car.

I fully disassembled my R/H caliper first and what I found was shocking. The bore that accepts the parking brake lever is corroded. The seal was also not driven down flat. You can see the corrosion and kind of tell the seal is off

This is the bore AFTER I cleaned it. Again Pretty corroded

I then took apart the L/H caliper. This one shows mild corrosion but would be usable with a rebuild. However the ratcheting mechanism is completely inoperable. This caliper has new internals which tells me something is off dimensionally with the parts.

I bought these over a year ago so no way rockauto will do anything. I am basically stuck buying another set.

With what I found on my R/H caliper I think I know what happened to the guy involved in the rollover @gilby959798 and @Mustang5L5 posted about.

My suspicion is that his caliper locked up due to heavy corrosion that jammed the mechanism.

The only good thing here is that I didn't run these calipers because both had flaws.

On to figuring out which brand to roll the dice with. Whatever I get will be pulled apart, inspected and seals replaced.

 

[Mustang5L5]

Holy hell.

That's a set of calipers that has never been on a car? Wow.

 

[Blkkbgt]

Holy hell.

That's a set of calipers that has never been on a car? Wow.

They were installed but never bled. There's no way that amount of corrosion happened strictly while they were in my possession.

I pulled them off to inspect and replace the seals after people in this thread started complaining of leaks.

 

[2012GTCS]

Sorry to ask a pretty dumb question. But anyone know where to grab the caliper pin kit for these ATS Brembos or a part number? Been digging for info and no one else has the same question, so I know I’m doing something wrong

 

[Blkkbgt]

Sorry to ask a pretty dumb question. But anyone know where to grab the caliper pin kit for these ATS Brembos or a part number? Been digging for info and no one else has the same question, so I know I’m doing something wrong

Check RockAuto under "Disc Brake Hardware Kit".

 

[Mustang5L5]

Rockauto has ATS calipers for $135 each. Damn that's cheap.

 

[Mustang5L5]

They were installed but never bled. There's no way that amount of corrosion happened strictly while they were in my possession.

I pulled them off to inspect and replace the seals after people in this thread started complaining of leaks.

I'm tempted to now pull that 43mm caliper i bought waaaaay back when I proved this out to see what it looks like inside.

I'm curious if quality dropped due to the rush of folks buying 43mm calipers. After all, where are they getting all the cores from for 20+ year old calipers given the increased demand in the last few years?

 

[2012GTCS]

Check RockAuto under "Disc Brake Hardware Kit".

thanks brother. Never decided to look there like a dummy anddddd i JUST placed an order

 

[lowranger96]

So guys question. Maybe I missed something in the pages. Ordered the brake lines listed and even what my buddy recommended. The hard line doesn't fit into the new soft lines. Am I missing something?

Keep in mind the hoses are very dependent on the year of car (fox, sn, new edge). I’m not sure what you have but sn/new edge would be a standard replacement style hose where fox would be specific to the year and also sn95 caliper swap style hose.

 

[CashMoneyKC]

Thanks for letting us know about this. I love some of their wheels and finding out the XT-005R wouldn't fit without massive spacers was disappointing.

I wish they offered that wheel in a 9.5in width though. I am looking to eventually run a square setup and I wonder if the XT-006R would clear. I can't find many pictures on mustangs with that wheel to get an idea though.

I'll wait for the new offsets and go from there. Thanks again for the heads up.

So the 005r will or will not fit with the ATS brake caliper? I know the new release is coming next month I was told but im not sure about offsets. Wasnt the original ones +25 or +23 in the front? I am getting the wheels when they release so I need to know if they will fit or not because I love the wheels way more than I do ATS brakes LOL. Thanks

 

[CashMoneyKC]

Yes, they were the 18x9 +25 wheels. I forget how much of a spacer I needed to clear, but it pushed the wheel out far enough past the fender (fox car) that I wasn't happy with it.

Cosmis is supposedly redesigning the wheel this summer and going to offer more offsets/BS at the end of 2022. I'm waiting to see if they offer something that may clear the calipers better.

I was going to sell off my ATS brembos and pick up the '00 R brembos but wants to confirm they would clear without spacer first. I haven't been able to confirm this.

ANother option was the Baer 6P caliper. Very expensive, but according to the template they supply it won't clear by 1-2mm. I had source tell me the template is a bit conservative so it might still work, but I don't feel like rolling the $2k dice on this.

I have stock brake setup now and was going to go ATS with the 005R but youre saying its a no go is that correct? I know they are "redesigning" the wheel with more offsets and its coming out soon. Seems like I should avoid the ATS and just go powerstop but would I have the same problem? There has to be a way to get better brakes and still get the xt005r. Ill have to ask around. It seems difficult to know which wheels fit which kit and trying to make it work. Thanks

 

[CashMoneyKC]

ANd cobra caliper. 2.6" give or take. Looks like the ATS would extend almost another inch beyond the face of the cobra caliper. The cobra caliper is a floating design keep in mind, so as the pad wears the caliper face would push away from the rim spokes. The body of the caliper (red in my pic) extends past the black caliper bracket about 1/4" or so.

View attachment 1724770

Thanks for this info. So just to make sure I got this right, The stock cobra caliper is 2.6 and the ATS is 3.5 wide so it adds an inch of width. That amount of increased width seems problematic for sure with getting the correct offset. I have 18x9 fr500 offset +24 now and looking to get xt005r offset +25. So to understand I need to look for a lower offset to move the wheel away from the caliper? IF I went higher it will move the wheel back closer to fender and brakes? Thanks again everyone

 

[Mustang5L5]

I have stock brake setup now and was going to go ATS with the 005R but youre saying its a no go is that correct? I know they are "redesigning" the wheel with more offsets and its coming out soon. Seems like I should avoid the ATS and just go powerstop but would I have the same problem? There has to be a way to get better brakes and still get the xt005r. Ill have to ask around. It seems difficult to know which wheels fit which kit and trying to make it work. Thanks

I’m also waiting on two more of the new release 005r. The new 18x9s will be +35 so I don’t think they will clear any better. I’ll be ordering two of those and then seeing which fits better up front or in they rear.

But the entire reason I don’t have the ATS on my car is because they wouldn’t clear my test fit of the +25 with the spacer, and I just didn’t want to run one (pushes wheel past fender).

I’ve got the standard cobra brakes on my car, so on a light fox brake performance hasn’t been an issue.

 

[Mustang5L5]

Hearing more and more issues with the Taurus 43mm calipers. Seals blowing out and calipers leaking and another lockup.

Needless to say, I’d say it’s a safer bet to stick with the standard cobra 38mm calipers or run the 43s at your own risk.

 

[Blkkbgt]

Hearing more and more issues with the Taurus 43mm calipers. Seals blowing out and calipers leaking and another lockup.

Needless to say, I’d say it’s a safer bet to stick with the standard cobra 38mm calipers or run the 43s at your own risk.

That's genuinely scary. Sounds like it's time to find another bias fix option for my IRS swapped GT.

 

[03HP]

That's genuinely scary. Sounds like it's time to find another bias fix option for my IRS swapped GT.

If you have ATS front brakes, your front bias with Cobra rears is ~72% which isn’t much higher than stock. Here’s a page I made that calculates the bias for you with various common setups on these cars: SN-95 Mustang Brake Bias Calculator

 

[Blkkbgt]

If you have ATS front brakes, your front bias with Cobra rears is ~72% which isn’t much higher than stock. Here’s a page I made that calculates the bias for you with various common setups on these cars: SN-95 Mustang Brake Bias Calculator

Odd you say that because when I calculated the bias years ago it was below that. I'll see if I can find the post.

 

[03HP]

Odd you say that because when I calculated the bias years ago it was below that. I'll see if I can find the post.

From my calculations, ATS fronts/Taurus rears push the front bias too low.

Please check the calculations on that page, it’s open source. Here’s the code: SN95-Brake-Bias/index.js at main · LawPaul/SN95-Brake-Bias
Rotor/caliper data is at the top of the file
Relevant lines:
627: piston area calc
643: rotor effective radius
655: front bias calc

 

[Blkkbgt]

From my calculations, ATS fronts/Taurus rears push the front bias too low.

Please check the calculations on that page, it’s open source. Here’s the code: SN95-Brake-Bias/index.js at main · LawPaul/SN95-Brake-Bias
Rotor/caliper data is at the top of the file
Relevant lines:
627: piston area calc
643: rotor effective radius
655: front bias calc

Below is a picture from the maximum motorsports website showing all the different brake bias percentages. I trust their math.

You're basically telling me the ATS calipers with 13 inch (cobra) rear rotors have a better bias than the 00R Brembos that have smaller pistons.

Let's also not forget the area of the pads on the ATS calipers is larger as well.

 

[Blkkbgt]

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