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Installing ATS Brembos on the Cobra.
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<blockquote data-quote="Mustang5L5" data-source="post: 16600915" data-attributes="member: 38517"><p>So this is about the closest I've found to "data". Take it with a HUGE grain of salt due to the unscientific method used, but it illustrates exactly what could happen with this swap. Keep in mind, this is a lighter fox-body, no ABS, and standard 38mm rears. It illustrates perfectly that tires are the limiting factor when it comes to brakes on <em>most</em> of these Mustangs.</p><p></p><p>You can skip over most of the video. 1:40 is with standard cobra brakes and 15:08 is the start of the Brembo "test". Again, avoid reading too far into this. Take it as an "observation" short of any true measured data. </p><p>[MEDIA=youtube]cE7ABa-dSPU[/MEDIA]</p><p></p><p>Granted, this might not be as much of an issue with an SN95 with more weight over the front wheels, wider tires, and ABS. That's why i say take the above with a grain of salt.</p><p></p><p>The pad overhang did bother me which is why i explored using the 2011+ non-brembo 13.2" rotor. Folks have used it either by machining the caliper down slightly (i never looked at machining the spindle a bit as well) or running a spacer under the rotor. This seems to solve the pad overhang issue completely but i've never seen someone come forward with pics and details to say "Yes, this works if you guy xyz and do abc" so this is something i just don't have enough knowledge on to give a solid answer. In my research, I have found some claiming the BAER calipers also have overhang. See post #11</p><p><a href="https://svtperformance.com/threads/baer-6p-front-fitment-issues-17-wheels.1179109/" target="_blank">https://svtperformance.com/threads/baer-6p-front-fitment-issues-17-wheels.1179109/</a></p><p></p><p>43mm rear calipers are necessary IMHO to have a chance at getting the bias in the ballpark. That's just based on my napkin calcs for bias. Keep in mind, this is going to vary depending on models. Bias on a 2004 Cobra is going to be different than on a 1988 coupe</p><p></p><p>Spacers, machining, spoke clearance, etc. All that's been covered. Going to vary heavily on what wheels you run, the suspension setup, etc. and individual preference on what they would like to do to physically mount the calipers.</p><p></p><p>Master cylinder options, especially with the 43mm rears. In researching hydroboost, i've discovered it's a different animal than vacuum boosted systems. It's a little more "forgiving" so not a huge deal in terms of going with the larger calipers. Vacuum boosted folks will need to upside the MC depending on what they have on the car.</p><p></p><p>Getting back to what i initially started with here, most Mustangs are going to be limited by tires. The standard Cobra brakes will probably be adequate for most. They fit well under most 17" wheels, you can run the 17" spare with them, parts are available everywhere for them. It's an effective upgrade or standard brake setup. I do think they are not adequate for the 03/04 cobra. That car should have come with the 00R Brembo from the factory. They have wider tires up front, more weight over the front wheels and would take advantage of a better brake system.</p><p></p><p>Again, I have a pretty neutral opinion on the setup. I think it can be made to work well on some cars with some thought, and other times I think it's way too much brake for other cars. My honest reason for not running the setup after putting in a lot of work is 2 reasons. #1 was the fit and offset. This isn't the brembos fault completely, but due to changing the K-member, a-arms and spindles on my car to a setup that pushed the wheels further out. This is unique to my car and every millimeter is crticial. I need the front wheels to come in, so pushing them out is not something I can really do. 2nd main reason is that my fox body is light, doesn't have ABS, and i'm limited to a 235 or 245 tire up front. If I get on the brakes heavy now with standard cobra brakes, I can lock them up. I'm limited by tires really, and my big fear was getting into a freeway panic stop situation like shown at 15:08 in the above video. </p><p></p><p>That's why I never installed this setup. It's not the smartest choice for me. If I had a 2004 Cobra....it would be a different story I promise.</p></blockquote><p></p>
[QUOTE="Mustang5L5, post: 16600915, member: 38517"] So this is about the closest I've found to "data". Take it with a HUGE grain of salt due to the unscientific method used, but it illustrates exactly what could happen with this swap. Keep in mind, this is a lighter fox-body, no ABS, and standard 38mm rears. It illustrates perfectly that tires are the limiting factor when it comes to brakes on [i]most[/i] of these Mustangs. You can skip over most of the video. 1:40 is with standard cobra brakes and 15:08 is the start of the Brembo "test". Again, avoid reading too far into this. Take it as an "observation" short of any true measured data. [MEDIA=youtube]cE7ABa-dSPU[/MEDIA] Granted, this might not be as much of an issue with an SN95 with more weight over the front wheels, wider tires, and ABS. That's why i say take the above with a grain of salt. The pad overhang did bother me which is why i explored using the 2011+ non-brembo 13.2" rotor. Folks have used it either by machining the caliper down slightly (i never looked at machining the spindle a bit as well) or running a spacer under the rotor. This seems to solve the pad overhang issue completely but i've never seen someone come forward with pics and details to say "Yes, this works if you guy xyz and do abc" so this is something i just don't have enough knowledge on to give a solid answer. In my research, I have found some claiming the BAER calipers also have overhang. See post #11 [URL]https://svtperformance.com/threads/baer-6p-front-fitment-issues-17-wheels.1179109/[/URL] 43mm rear calipers are necessary IMHO to have a chance at getting the bias in the ballpark. That's just based on my napkin calcs for bias. Keep in mind, this is going to vary depending on models. Bias on a 2004 Cobra is going to be different than on a 1988 coupe Spacers, machining, spoke clearance, etc. All that's been covered. Going to vary heavily on what wheels you run, the suspension setup, etc. and individual preference on what they would like to do to physically mount the calipers. Master cylinder options, especially with the 43mm rears. In researching hydroboost, i've discovered it's a different animal than vacuum boosted systems. It's a little more "forgiving" so not a huge deal in terms of going with the larger calipers. Vacuum boosted folks will need to upside the MC depending on what they have on the car. Getting back to what i initially started with here, most Mustangs are going to be limited by tires. The standard Cobra brakes will probably be adequate for most. They fit well under most 17" wheels, you can run the 17" spare with them, parts are available everywhere for them. It's an effective upgrade or standard brake setup. I do think they are not adequate for the 03/04 cobra. That car should have come with the 00R Brembo from the factory. They have wider tires up front, more weight over the front wheels and would take advantage of a better brake system. Again, I have a pretty neutral opinion on the setup. I think it can be made to work well on some cars with some thought, and other times I think it's way too much brake for other cars. My honest reason for not running the setup after putting in a lot of work is 2 reasons. #1 was the fit and offset. This isn't the brembos fault completely, but due to changing the K-member, a-arms and spindles on my car to a setup that pushed the wheels further out. This is unique to my car and every millimeter is crticial. I need the front wheels to come in, so pushing them out is not something I can really do. 2nd main reason is that my fox body is light, doesn't have ABS, and i'm limited to a 235 or 245 tire up front. If I get on the brakes heavy now with standard cobra brakes, I can lock them up. I'm limited by tires really, and my big fear was getting into a freeway panic stop situation like shown at 15:08 in the above video. That's why I never installed this setup. It's not the smartest choice for me. If I had a 2004 Cobra....it would be a different story I promise. [/QUOTE]
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Installing ATS Brembos on the Cobra.
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