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> Rear brake upgrade (again, lol), Or,how to get a vented rotor
HalfMoon
post Jun 29 2017, 06:08 PM
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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?
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Racer
post Jul 6 2017, 03:44 PM
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Tricky part about Summit Point (main) is the T1 entry. With my 911SC, I would just brush 120mph and have to brake to 45-50 ish for T1. Do that 15-20 times a session. A SBC could be pulling closer to 140mph (depending on aero and driver) but still need to brake down the same.. so scrubbing close to 100mph.

The related issue is that you then have T5 -entry to the carousel. While you might enter at 100 ish, you have to brake down again, to 40ish... and by the third hot lap, THIS will be where you really want effective brakes with large heat soak ability, or LOTS of cool air...

imho, messing around with home made this and that vs a proven and supported product that, while giving up the E-Brake, allows you and a passenger / instructor to be confident of high speed stopping seems to be putting a cart before the horse...

At minimum I would encourage you to run SC rotors and calipers front and rear along with ducting to get air on them.


While the prices might be crazy, at least look at the Lots of general good brake info here.. http://www.vehiclecraft.com/Brakes/930_upgrade.htm
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HalfMoon   Rear brake upgrade (again, lol)   Jun 29 2017, 06:08 PM
Spoke   I added spaced 914 rear calipers and 911 rear vent...   Jun 29 2017, 07:30 PM
HalfMoon   I added spaced 914 rear calipers and 911 rear ven...   Jun 29 2017, 09:22 PM
HalfMoon   I added spaced 914 rear calipers and 911 rear ven...   Jun 29 2017, 09:30 PM
bdstone914   Makes me wonder if a spacer between the caliper an...   Jun 29 2017, 09:51 PM
HalfMoon   Makes me wonder if a spacer between the caliper a...   Jun 29 2017, 10:04 PM
Chris914n6   911 SC calipers and rotors on the front. On the a...   Jun 30 2017, 12:57 PM
Spoke   Don't know why year the rotors are. I bought t...   Jun 29 2017, 09:25 PM
HalfMoon   Don't know why year the rotors are. I bought ...   Jun 29 2017, 09:30 PM
rgalla9146   Certainly '69 to '73 and surely later but ...   Jun 29 2017, 09:35 PM
HalfMoon   Spec for the rest Hankook Ventus V12 evo 225/50ZR1...   Jun 29 2017, 10:10 PM
Spoke   Here's a thread I started to ask vented rear r...   Jun 29 2017, 10:39 PM
HalfMoon   Here's a thread I started to ask vented rear ...   Jun 30 2017, 08:58 AM
Mark Henry   I used spacers (flat washers) under my V-calipers ...   Jun 30 2017, 10:00 AM
mgphoto   I v'ed my rears about 5 years ago, I used the ...   Jun 30 2017, 12:13 PM
Mikey914   The 6 vented calipers are always an option. I...   Jun 30 2017, 12:44 PM
HalfMoon   The 6 vented calipers are always an option. I...   Jun 30 2017, 06:34 PM
bdstone914   The 6 vented calipers are always an option. I...   Jul 1 2017, 10:07 AM
HalfMoon   [quote name='HalfMoon' post='2501934' date='Jun 3...   Jul 1 2017, 10:56 AM
Mark Henry   [quote name='HalfMoon' post='2501934' date='Jun 3...   Jul 2 2017, 01:43 PM
mepstein   [quote name='HalfMoon' post='2501934' date='Jun ...   Jul 2 2017, 05:50 PM
Chris914n6   :agree: V-calipers use the 911 rotor. They also ...   Jul 2 2017, 11:50 PM
mepstein   :agree: V-calipers use the 911 rotor. They also...   Jul 3 2017, 07:24 AM
mgphoto   :agree: V-calipers use the 911 rotor. They also...   Jul 3 2017, 09:52 AM
Dave_Darling   Ask the mechanic why he recommends upgraded rear b...   Jun 30 2017, 04:57 PM
HalfMoon   Ask the mechanic why he recommends upgraded rear ...   Jun 30 2017, 06:14 PM
Dave_Darling   Cross-drilled are a waste of time for almost all c...   Jun 30 2017, 09:10 PM
HalfMoon   Cross-drilled are a waste of time for almost all ...   Jul 1 2017, 08:28 AM
HalfMoon   Sooo, I reckon the Sebro 20mm will work allright h...   Jul 1 2017, 08:35 AM
mepstein   On mine, i just shaved down the rotor diameter 2-3...   Jul 1 2017, 08:43 AM
HalfMoon   On mine, i just shaved down the rotor diameter 2-...   Jul 1 2017, 08:48 AM
mepstein   On mine, i just shaved down the rotor diameter 2...   Jul 1 2017, 08:57 AM
HalfMoon   [quote name='HalfMoon' post='2502077' date='Jul 1...   Jul 1 2017, 09:04 AM
Mikey914   I have a 1 or 2 sets in the shop but haven't g...   Jul 1 2017, 11:06 AM
mgphoto   The bolts are the issue, I believe. Hardware is 7 ...   Jul 1 2017, 06:07 PM
HalfMoon   The bolts are the issue, I believe. Hardware is 7...   Jul 1 2017, 09:39 PM
914Sixer   914-6 GT cars had vented rotors. They were specia...   Jul 2 2017, 06:34 PM
mepstein   914-6 GT cars had vented rotors. They were speci...   Jul 2 2017, 06:58 PM
mgphoto   901.352.041.12 Rear disc - 2 According to the 914...   Jul 2 2017, 09:46 PM
larryM   always a fascinating discussion - must be 300 id...   Jul 4 2017, 01:13 PM
mepstein   always a fascinating discussion - must be 300 i...   Jul 4 2017, 01:40 PM
HalfMoon   [quote name='larryM' post='2502943' date='Jul 4 2...   Jul 4 2017, 04:41 PM
HalfMoon   always a fascinating discussion - must be 300 i...   Jul 4 2017, 04:40 PM
HalfMoon   Well crap. I just realized the PO had converted th...   Jul 5 2017, 04:45 PM
mepstein   Well crap. I just realized the PO had converted t...   Jul 5 2017, 04:53 PM
Mark Henry   Well crap. I just realized the PO had converted ...   Jul 5 2017, 05:34 PM
HalfMoon   Well the good news is that I was wrong! Indeed...   Jul 5 2017, 06:04 PM
pete-stevers   Where is Erc?? :idea:   Jul 5 2017, 07:44 PM
Mark Henry   Where is Erc?? :idea: MIA   Jul 6 2017, 08:00 AM
Racer   Tricky part about Summit Point (main) is the T1 en...   Jul 6 2017, 03:44 PM
HalfMoon   Tricky part about Summit Point (main) is the T1 e...   Jul 6 2017, 03:58 PM


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