Proportion Valve Placement.

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Old Dec 6, 2011 | 08:59 AM
  #1  
mcutlass1969's Avatar
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Proportion Valve Placement.

Looking for suggestions on placement of the Proportion Valve. Right now I am doing a frame off. First one. I will say it is nice to have a nice clean frame to work on. What I am doing is converting the front brakes on a 69 Cutlass S to Disk brakes. Now prior to this when I drove the car with all drums I had to move distro block to the lower firewall due to the headers on the 455 needed the room next to the inner frame. With this since I have more access I was thinking of moving this further back on the inner frame back around the corner under the drivers feet area but open to suggestions.

Another in review of the Fusicks cataloge for prop valves it mentions proper placement. Any thoughts to that?
Old Dec 6, 2011 | 09:04 AM
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RAMBOW's Avatar
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From: Snohomish, WA
Originally Posted by mcutlass1969
Looking for suggestions on placement of the Proportion Valve. Right now I am doing a frame off. First one. I will say it is nice to have a nice clean frame to work on. What I am doing is converting the front brakes on a 69 Cutlass S to Disk brakes. Now prior to this when I drove the car with all drums I had to move distro block to the lower firewall due to the headers on the 455 needed the room next to the inner frame. With this since I have more access I was thinking of moving this further back on the inner frame back around the corner under the drivers feet area but open to suggestions.

Another in review of the Fusicks cataloge for prop valves it mentions proper placement. Any thoughts to that?
Its a hydraulic system. You can put the prop valve anywhere you like, make the lines as long as you like. As long as its filled & properly bled, everything will still work the same- Just a bigger hassle to make & run lines if you go too far back.

On my 66 when i put disks on it, I put it way back on the front frame rail right after the first big curve after the straight section. Should easily clear headers, etc etc.
Old Dec 6, 2011 | 12:17 PM
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I mounted one under the master cylinder with an OEM bracket for that placement. If you are going to race, there should be no lines going past the bellhousing area, unless protected in 1/8" wall tubing, per NHRA rules.
Old Dec 6, 2011 | 01:10 PM
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Thanks

Thanks that may be an option. No plans to race it but to just run it around town as a toy. i have plenty of metal work todo on the shell.
Old Dec 10, 2011 | 04:34 PM
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Wilwood pro valve

Here are a few pictures of my lines on my 64 F-85 pro-touring build and where I decided to mount mine. Give you some ideas.
IMG_1104.jpg
IMG_1103.jpg
IMG_1094.jpg
Old Dec 10, 2011 | 04:53 PM
  #6  
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That looks like copper tubing. Please tell us it is not.
Old Dec 11, 2011 | 07:14 AM
  #7  
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EZIBEND Tubing mfr. Brakequip. It's a 90/10 alloy makes it very easy to bend your own lines. I believe its OEM on Jaguar and BMW now. www.brakequip.com
Old Dec 12, 2011 | 06:02 AM
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Thanks gues. I went with the option with the bracket up by the booster.
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