Rear brake upgrade (again, lol), Or,how to get a vented rotor |
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Rear brake upgrade (again, lol), Or,how to get a vented rotor |
HalfMoon |
Jun 29 2017, 06:08 PM
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#1
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Senior Member Group: Members Posts: 828 Joined: 13-November 12 From: Shenandoah Junction, WV Member No.: 15,144 Region Association: MidAtlantic Region |
So I know this has been talked to death thousands of times and when I do a google search there's reems of information, but rather than spend the entire evening reading through many posts that really aren't relevant, I thought I would pose the question and see what turns up.
Recently I had a four wheel alignment and corner balance done by a really great and well known shop out my way (who are very familiar with track cars for my local track-Summit Point) and when I asked the primary mechanic today what things he might suggest for my sbc Sheridan standard wide-body conversion, he said upgrading my rear brakes would be pretty important for that track. Soooo, yes there are lots of ways to go to be sure but I was wondering about retaining the standard rear 914 brake (and e-brake) but using the vented 911 SC rotor? Do I recall Eric made/makes a spacer for this or is/was that for converting 914 fronts to rears? A lil confused this particular application. I like the idea of retaining the stock 914 rear calipers if I can but I really want to go to vented rotor (as opposed to drilled). Thoughts? |
mepstein |
Jul 1 2017, 08:43 AM
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#2
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914-6 GT in waiting Group: Members Posts: 19,518 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
On mine, i just shaved down the rotor diameter 2-3mm. I didnt need any spacers but I am using 911 hubs. If you are using a 4 hub, you can re drill holes for the set screw but its not needed. Once you put on the wheel and tighten the lug nuts, everything is held secure. Rotors wont "fall off" when you remove the wheels since the caliper holds them on.
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HalfMoon |
Jul 1 2017, 08:48 AM
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#3
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Senior Member Group: Members Posts: 828 Joined: 13-November 12 From: Shenandoah Junction, WV Member No.: 15,144 Region Association: MidAtlantic Region |
On mine, i just shaved down the rotor diameter 2-3mm. I didnt need any spacers but I am using 911 hubs. If you are using a 4 hub, you can re drill holes for the set screw but its not needed. Once you put on the wheel and tighten the lug nuts, everything is held secure. Rotors wont "fall off" when you remove the wheels since the caliper holds them on. Thanks for chimming in on that. I had read a thread where someone claimed that they needed to drill and tap a new guide as they felt the spacer between the rotor and hub had compromised the ability for the rotor to self center. I had thought that kinda odd as the lug studs center the rotor.... Mebbe because you hadn't used the spacers, you didn't encounter that problem? Either way, not difficult to solve. |
mepstein |
Jul 1 2017, 08:57 AM
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#4
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914-6 GT in waiting Group: Members Posts: 19,518 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
On mine, i just shaved down the rotor diameter 2-3mm. I didnt need any spacers but I am using 911 hubs. If you are using a 4 hub, you can re drill holes for the set screw but its not needed. Once you put on the wheel and tighten the lug nuts, everything is held secure. Rotors wont "fall off" when you remove the wheels since the caliper holds them on. Thanks for chimming in on that. I had read a thread where someone claimed that they needed to drill and tap a new guide as they felt the spacer between the rotor and hub had compromised the ability for the rotor to self center. I had thought that kinda odd as the lug studs center the rotor.... Mebbe because you hadn't used the spacers, you didn't encounter that problem? Either way, not difficult to solve. Put on new rubber flex lines if you havent done them recently. Its so much easier to do now and they sure dont get better with age. |
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