Re: Upgrading an old disc brake swap
[Re: General 68]
#177294
12/28/08 07:20 PM
12/28/08 07:20 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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If you were Ok with stock parts for an upgrade then 11&3/4" rotors, adapters for them & 2.75" calipers(76 A body units) & some semi metallic pads(I got a set for $15) to my door & a proper bed in procedure.
live every 24 hour block of time like it's your last day on earth
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Re: Upgrading an old disc brake swap
[Re: General 68]
#177299
12/29/08 03:20 PM
12/29/08 03:20 PM
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Joined: Sep 2003
Posts: 1,168 Vancouver, WA
MoparMarq
super stock
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super stock
Joined: Sep 2003
Posts: 1,168
Vancouver, WA
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Quote:
Thanks! Any ideas how much weight loss a change to Wilwood calipers will provide? What adapters do the Wilwoods require (part #)? Would an aftermarket performance rotor be worth running? Do the performance calipers actually provide more clamping force than the stock ones? What difference does a 2,75" piston make compared to a 2,6" piston? A lot of Q's! I have read through a lot of threads around this but can't really find the answers I need.
IIRC, it's about 7 lbs/corner. Not sure though.
I had this exact setup on my '72 RR for about 7-8 years or so. Very happy with it. Plenty of clamping force for me (street driver), although I had power brakes at the time. Used my DC proportioning valve with the setup. I've since gone with Andy's Viper caliper setup, though I can't say yet how I like it, as the car's not done yet. I think I have a few pics of the old setup for eBay purposes. It'll probably be for sale next summer when I'm sure I'm happy with the new setup.
BTW, the Wilwoods don't have dust boots on the pistons, so they're not technically DOT legal. But I never had any problem with leakage or assymetric braking.
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Re: Upgrading an old disc brake swap
[Re: General 68]
#177301
12/29/08 03:35 PM
12/29/08 03:35 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Quote:
Let's say I put on 11,75" discs and run an adjustable proportioning valve. Would the 2,75" piston caliper do any difference? Just to know if I need different adapters to run the 11,75" rotors.
(1) definitely yes, going from 10.87" rotors to 11&3/4" rotors will give you a much longer lever arm & 2.60" to 2.75" will give you ~3/8" more total bore size, you'll feel the difference (2) the 11&3/4" rotors do need different caliper adapters. I remember the magazine article(MA I think) that had the pics/measurements & it might be in the archives where you can access it. I would also keep your factory proportioning valve & add an adjustable one in the rear line if you are presently redoing your lines & if not wait & see how off your bias is when you get it up & running/driving & decide then if you need to plumb one in. EDIT dont forget some better pads
Last edited by RapidRobert; 12/29/08 03:51 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Upgrading an old disc brake swap
[Re: General 68]
#177303
12/30/08 09:03 AM
12/30/08 09:03 AM
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Joined: Mar 2007
Posts: 3,277 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,277
West Coast, USA
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Before you put your new "good" pads in, buy a cheap set of organic pads and run them for a thousand miles or so. After that, scuff the rotor lightly, clean it well, and install your fresh semi-metalic pads. This will help burn the oil and such out of the new rotors. I usually only bother with this on the fronts, but after doing it, it seems to enhance braking performance.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Upgrading an old disc brake swap
[Re: jbc426]
#177304
12/30/08 11:26 AM
12/30/08 11:26 AM
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Joined: Oct 2003
Posts: 403 Western Oregon
bull
mopar
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mopar
Joined: Oct 2003
Posts: 403
Western Oregon
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I'm a little confused. You say you have 11" rotors now but as far as I know there's no such thing in the Mopar world. Are you just rounding up the 10.87" measurement?
Also, I'm curious why you want to "upgrade" the system. The worst disc brakes are a lot better than the best drum brakes and drum brakes are a lot better than nothing. Is it just a "cool factor" thing or is something actually broken/worn out/bent?
1968 Charger 383/2bbl/4spd (1 of 74)
1994 Dakota Sport 3.9L/AT/2WD
2003 Durango SLT 4.7L/AT/4X4
Yes, all Dodges and nothing else
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Re: Upgrading an old disc brake swap
[Re: General 68]
#177308
12/30/08 04:47 PM
12/30/08 04:47 PM
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Joined: May 2005
Posts: 4,717 Florida
BDW
master
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master
Joined: May 2005
Posts: 4,717
Florida
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Quote:
Yes, the car has 10,87" rotors. They work ok for the street, but it's a hobby, right! And after upgrading motor, driveline and suspention I don't think tossing a few bucks into better brakes with new disc's etc won't be a bad idea. And when already digging in it why not atleast put on bigger rotors and maybe shave off some weight with lighter calipers? Besides- I think I have got some wrong info around how to find adapters for 11-3/4 discs. I need some info on how to measure a 11-3/4 adapter.
This tells you how to measure
http://www.moparaction.com/tech/archive/disc-main.html
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