rear "V-caliper" vs. "M" caliper, please jump in Eric Shea |
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rear "V-caliper" vs. "M" caliper, please jump in Eric Shea |
Wes V |
Aug 12 2008, 10:28 AM
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#1
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Member Group: Members Posts: 482 Joined: 11-October 07 From: Los angeles Member No.: 8,211 |
In the process of converting to 5 lug and also rear vented rotors, there appears to be two ways to go about it. Both have been explored and written about by Eric Shea over the years. (Ya, I've done a lot of searching and reading)
One is the usage of a late model 914 rear caliper with spacers placed in the body, to get the needed clearance for the vented rotor. (as I read it; a late model ATE caliper is used and not a rare 914/6 caliper) A spacer is required between the brake rotor and hub (moving the rotor and wheel outward). The rotor (911SC) has to have it's diameter shaved down 4mm) The parking brake cable just hooks up as stock. The other option is to use the "M" caliper from a 911 and also the parking brake assembly. Mounting the parking brake assembly requires grinding and welding on the housing. Hooking up the parking brake cable requires fabrication, but is possible (and can be found by searching this site). Now I can think of plus and minus points for both, but I'd like to hear from others. Wes Vann |
Joe Bob |
Aug 12 2008, 11:08 AM
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
Eric is on vacation....
A third option is to install a second small caliper like the Carrera GT.....%^B..... Wilwood has nice units for a good price. Wilwood Or simply put it in gear and/or use a wheel chock. I did that for years....I still find myself reaching behind my seat out of habit looking for that collapsible chock... |
Wes V |
Aug 12 2008, 11:22 AM
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Member Group: Members Posts: 482 Joined: 11-October 07 From: Los angeles Member No.: 8,211 |
Eric is on vacation.... Dang, who said he could go?? Mikez; The question doesn't really have anything to do with the parking brake aspect, due to the fact it can be solved using either caliper. My guess (and that's all it is at this point) is that the "M" caliper would have a larger bore, resulting in better braking (Ya, I know you have to balance it with what you have in the front). With the "V", all you are getting is ease of installation and vented rotors (which until heat becomes an issue, doesn't add in braking). (plus the negative that adding a spacer in the caliper will increase it's flex, basic physics) Wes |
cobra94563 |
Aug 12 2008, 03:00 PM
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#4
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Chris Group: Members Posts: 341 Joined: 1-March 05 From: San Francisco Member No.: 3,696 |
My guess (and that's all it is at this point) is that the "M" caliper would have a larger bore, resulting in better braking With the "V", all you are getting is ease of installation and vented rotors (which until heat becomes an issue, doesn't add in braking). (plus the negative that adding a spacer in the caliper will increase it's flex, basic physics) Wes I have an SC front end and my take is the same as you. The "spaced" solution is relatively easy, but no real gain. The rear M calipers are better. I bought the calipers and rotors (cheap) and am looking for the parking brake setup. Meanwhile, I'm running stock rear, no proportioning valve, trying to determine if I realy need it. I'm not convinced yet for a street application. Hopefully someone will make an easy parking brake solution - I live on a hill. |
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