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Sofia74 Samba Member
Joined: August 30, 2015 Posts: 565 Location: WV
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Posted: Sat Nov 10, 2018 3:12 pm Post subject: CB Performance Rear Disc Brake Conversion - Two Questions |
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I have installed the rear brake conversion from CB Performance on a 1974 KG Coupe.
First question is did I install the calipers reversed? Which would make them upside down. I did some looking online and have seen them installed both ways. Looks like they fit both ways but the emergency brake cable is on top one way and on the bottom the other way. Does it matter? The way I have it has the bleeder valve up high so this looks right to me.
Second question is about the hard brake line. The kit came with 30 inch hard brake lines. It looks like the line has to go all the from the connection with the flexible line, under the CV joints or shock and do a 180 degree turn to attach to the point where there is currently a yellow plug in the picture. That seems very awkward to me. Is that right?
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slalombuggy Samba Member
Joined: July 17, 2010 Posts: 9147 Location: Canada
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Posted: Sat Nov 10, 2018 4:44 pm Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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I run the brake lines over the top to the caliper. But, i put another hardline clamp on the swing arm and run a flexible line from that to the caliper. I dont like hardlines moving around and fatiquing.
The bleeded sxrew is what dictates how the caliper is mounted ot the ebrake cable. You have it mounted correctly.
brad |
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Sofia74 Samba Member
Joined: August 30, 2015 Posts: 565 Location: WV
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Posted: Sat Nov 10, 2018 5:09 pm Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Brad,
Thanks. Do you have a picture of what you are describing? I understand the principle but having trouble picturing. Hard line clamp on the swing arm?
Matt |
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slalombuggy Samba Member
Joined: July 17, 2010 Posts: 9147 Location: Canada
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Posted: Sun Nov 11, 2018 6:48 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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runamoc Samba Member
Joined: June 19, 2006 Posts: 5601 Location: 37.5N 77.1W
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Posted: Sun Nov 11, 2018 8:20 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Like slalombuggy posted. Short flex lines from the hard lines to the calipers. Only I Drilled and tapped a hole for a cable clamp to hold the 'transition' from flex to solid. I also used another cable clamp to hold the emergency brake cable.
_________________ Daily driver: '69 Baja owned 44 yrs - Plan B: '81 Rabbit Diesel LS Deluxe - Plan C: '72 Ghia
Yard Art: 2 Sandrails
Outback: '69 Ghia - '68,'69,'70,'72 Beetle - '84 Scirocco, GTI - Pair of '02 Golfs-
VW Wiring = It's just wires |
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runamoc Samba Member
Joined: June 19, 2006 Posts: 5601 Location: 37.5N 77.1W
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Posted: Sun Nov 11, 2018 8:23 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Looks good. Will the emergency brake cables interfere with the hard brake line and support bracket? _________________ Daily driver: '69 Baja owned 44 yrs - Plan B: '81 Rabbit Diesel LS Deluxe - Plan C: '72 Ghia
Yard Art: 2 Sandrails
Outback: '69 Ghia - '68,'69,'70,'72 Beetle - '84 Scirocco, GTI - Pair of '02 Golfs-
VW Wiring = It's just wires |
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slalombuggy Samba Member
Joined: July 17, 2010 Posts: 9147 Location: Canada
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Posted: Sun Nov 11, 2018 8:50 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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No |
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Balmoral1958 Samba Member
Joined: May 13, 2011 Posts: 248 Location: Austin
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Posted: Mon Nov 12, 2018 10:21 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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How well does this kit work?
I realize that most of the braking is done on the front. _________________ 2x 1974 Karmann Ghia Coup
1984 Citroen 2CV
1956 Citroen 2CV
!984 911 Targa |
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slalombuggy Samba Member
Joined: July 17, 2010 Posts: 9147 Location: Canada
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Posted: Tue Nov 13, 2018 8:37 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Balmoral1958 wrote: |
How well does this kit work?
I realize that most of the braking is done on the front. |
I havent used this particular kit, although tthey look to be the same parts, but having 4 wheel disks is night and day difference for me. I only used rear brakes on my last 2 race xars and they hauled the cars down from speed quite easily.
brad |
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Balmoral1958 Samba Member
Joined: May 13, 2011 Posts: 248 Location: Austin
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Posted: Tue Nov 13, 2018 2:02 pm Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Thanks - assume this will need a bigger MC and a proportioning valve? _________________ 2x 1974 Karmann Ghia Coup
1984 Citroen 2CV
1956 Citroen 2CV
!984 911 Targa |
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slalombuggy Samba Member
Joined: July 17, 2010 Posts: 9147 Location: Canada
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Posted: Tue Nov 13, 2018 2:12 pm Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Balmoral1958 wrote: |
Thanks - assume this will need a bigger MC and a proportioning valve? |
Yes on the masater, and yes on the valve if you want a pedal that's right at the top. I didn't put one in my cars and the pedal is a bit low, but firm and works perfectly fine. My Ghia will be getting one though.
brad |
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Balmoral1958 Samba Member
Joined: May 13, 2011 Posts: 248 Location: Austin
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Posted: Tue Nov 13, 2018 2:22 pm Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Great - the E -Brake on this kit does not look very robust.. _________________ 2x 1974 Karmann Ghia Coup
1984 Citroen 2CV
1956 Citroen 2CV
!984 911 Targa |
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Sofia74 Samba Member
Joined: August 30, 2015 Posts: 565 Location: WV
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Posted: Tue Nov 13, 2018 4:44 pm Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Hey Brad,
Saw your reply. I went 20.6 on the MC and a proportioning valve just forward of the rear split. How does that sound?
Matt |
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slalombuggy Samba Member
Joined: July 17, 2010 Posts: 9147 Location: Canada
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Posted: Wed Nov 14, 2018 6:47 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Balmoral1958 wrote: |
Great - the E -Brake on this kit does not look very robust.. |
Thats what you get on new cars. This isnt some specially made part from CB, it's from a production line vehicle. They all look just as strong.
brad |
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slalombuggy Samba Member
Joined: July 17, 2010 Posts: 9147 Location: Canada
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Posted: Wed Nov 14, 2018 6:49 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Sofia74 wrote: |
Hey Brad,
Saw your reply. I went 20.6 on the MC and a proportioning valve just forward of the rear split. How does that sound?
Matt |
Perfect |
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xzener Samba Member
Joined: June 03, 2006 Posts: 1777
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Posted: Wed Nov 14, 2018 8:05 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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For those who have 4 wheel disk... When you slam on the brakes, does the car stop straight?? Reason I ask is that I was talked out of 4 wheel disk due to the system being primitive... Non-ABS. Cant remember who it was, but he stated the wheels can lock up, and you could end up in a ditch. That was enough for me to keep the drums on the rear. But now that I think of it... The drums can lock up too. _________________ My 70 beetle was totaled Now to build the Ghia I always wanted. Rest in peace Ruby, I will miss you. Hello <insert Ghia name here>! |
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crocteau Samba Member
Joined: March 31, 2005 Posts: 1204 Location: Philaburbia
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Posted: Wed Nov 14, 2018 8:20 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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xzener wrote: |
For those who have 4 wheel disk... When you slam on the brakes, does the car stop straight?? |
Yes, but I only brake for deer and old ladies in the road, otherwise I use the horn and steer around. |
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slalombuggy Samba Member
Joined: July 17, 2010 Posts: 9147 Location: Canada
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Posted: Wed Nov 14, 2018 10:37 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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xzener wrote: |
For those who have 4 wheel disk... When you slam on the brakes, does the car stop straight?? Reason I ask is that I was talked out of 4 wheel disk due to the system being primitive... Non-ABS. Cant remember who it was, but he stated the wheels can lock up, and you could end up in a ditch. That was enough for me to keep the drums on the rear. But now that I think of it... The drums can lock up too. |
I stop WAY straighter than I ever could with drum brakes. I have never done a 180 with disk brakes, which I had done repeatedly with drums when I was autocrossing on slicks coming into the stop box. I also find them more predictable as to where the point of lock up is and can modulate braking much easier.
This summer while testing my salt flats car I was coming to a curve on the highway far to fast. I had to really stand on the brakes (rear only) to the point of locking them up intermittently and the car never pulled, slowed down straight as an arrow, even when the brakes got hot enough to turn the rotors blue.
brad |
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xzener Samba Member
Joined: June 03, 2006 Posts: 1777
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Posted: Wed Nov 14, 2018 10:39 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Thanks guys... Money permitting, I will be doing the conversion. _________________ My 70 beetle was totaled Now to build the Ghia I always wanted. Rest in peace Ruby, I will miss you. Hello <insert Ghia name here>! |
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Balmoral1958 Samba Member
Joined: May 13, 2011 Posts: 248 Location: Austin
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Posted: Thu Nov 15, 2018 10:48 am Post subject: Re: CB Performance Rear Disc Brake Conversion - Two Questions |
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Ant preference on brand for these kits? _________________ 2x 1974 Karmann Ghia Coup
1984 Citroen 2CV
1956 Citroen 2CV
!984 911 Targa |
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