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The Terminator
Terminator Talk
Installing ATS Brembos on the Cobra.
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<blockquote data-quote="Mustang5L5" data-source="post: 16255784" data-attributes="member: 38517"><p>I played around with this over the weekend on a bench with some spare spindles and rotors. Not sure I'm going to continue much further with it.</p><p></p><p>I know guys are running these, but my criteria was no spindle mods, and no brake pad shaving.</p><p></p><p>The ATS uses a 12.6 rotor and the Caliper is designed for that radius. You can see here on the 13.1 cobra rotor the different radius</p><p>[ATTACH=full]1589406[/ATTACH]</p><p></p><p>The 13.4 rotor doesn't fit well. Since the radius of the Caliper is for a smaller rotor, the arc of the larger rotor causes it to come very close to hitting (if it didn't skresdy) the front and rear of the Caliper body. The result is you'd still need to shave some of the pad after machining the rotor to fit.</p><p></p><p>Here's the Caliper resting on the 13.4 rotor and you can see the pad still overhangs. </p><p>[ATTACH=full]1589409[/ATTACH] </p><p></p><p>The cobra 13.1 rotor does fit in the Caliper and allow an unmodified pad to fully contact the face, but you'd need to modify the spindle to located the Caliper down about 8mm towards the center of rotation. Not easy to do.</p><p></p><p>[ATTACH=full]1589408[/ATTACH]</p><p></p><p>Playing with CAD, the inserts on the Caliper can be removed and designed with a shift of 0.5mm to match the GM bolt spread (130mm on the SN95 and maybe 131mm on GM) and shift it about 0.5mm closer to hub. Not enough to bring the pad on the rotor face.</p><p></p><p>I know the Subaru guys do this mod too on 12.8 rotors and complain about pad overhang as well.</p><p></p><p>So I'm going to stop here, return my j55 rotor and put my $50 Caliper on a shelf as a paperweight for now. I know these can be made to fit, but I don't want to do some of the modifications required too. In 10 years or so when I'm 50 I want to be able to order an off-the-shelf pad or rotor and put it in without modification, or change to a different braje setup without having to replace my spindle</p></blockquote><p></p>
[QUOTE="Mustang5L5, post: 16255784, member: 38517"] I played around with this over the weekend on a bench with some spare spindles and rotors. Not sure I'm going to continue much further with it. I know guys are running these, but my criteria was no spindle mods, and no brake pad shaving. The ATS uses a 12.6 rotor and the Caliper is designed for that radius. You can see here on the 13.1 cobra rotor the different radius [ATTACH=full]1589406[/ATTACH] The 13.4 rotor doesn't fit well. Since the radius of the Caliper is for a smaller rotor, the arc of the larger rotor causes it to come very close to hitting (if it didn't skresdy) the front and rear of the Caliper body. The result is you'd still need to shave some of the pad after machining the rotor to fit. Here's the Caliper resting on the 13.4 rotor and you can see the pad still overhangs. [ATTACH=full]1589409[/ATTACH] The cobra 13.1 rotor does fit in the Caliper and allow an unmodified pad to fully contact the face, but you'd need to modify the spindle to located the Caliper down about 8mm towards the center of rotation. Not easy to do. [ATTACH=full]1589408[/ATTACH] Playing with CAD, the inserts on the Caliper can be removed and designed with a shift of 0.5mm to match the GM bolt spread (130mm on the SN95 and maybe 131mm on GM) and shift it about 0.5mm closer to hub. Not enough to bring the pad on the rotor face. I know the Subaru guys do this mod too on 12.8 rotors and complain about pad overhang as well. So I'm going to stop here, return my j55 rotor and put my $50 Caliper on a shelf as a paperweight for now. I know these can be made to fit, but I don't want to do some of the modifications required too. In 10 years or so when I'm 50 I want to be able to order an off-the-shelf pad or rotor and put it in without modification, or change to a different braje setup without having to replace my spindle [/QUOTE]
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Installing ATS Brembos on the Cobra.
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