986 Forum - The Community for Porsche Boxster & Cayman Owners
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986 Forum - The Community for Porsche Boxster & Cayman Owners (http://986forum.com/forums/)
-   Boxster Racing Forum (http://986forum.com/forums/boxster-racing-forum/)
-   -   Brake master cylinder sizes (http://986forum.com/forums/boxster-racing-forum/47939-brake-master-cylinder-sizes.html)

LAP1DOUG 09-01-2013 04:39 AM
Quote:
Originally Posted by bam914 (Post 360476)
The diagram is wrong. The prop valve is on the rear. The next page it tells where each one goes on the ABS unit.
Great find - thanks for sharing. Please let us know how things work out if you replace with an adjustable prop valve.

Stroked & Blown 09-01-2013 05:22 AM
Have you considered adjusting bias with different pad compounds f/r?

bam914 09-01-2013 05:36 AM
Quote:
Originally Posted by Stroked & Blown (Post 360688)
Have you considered adjusting bias with different pad compounds f/r?
Already did that to start. The main problem is pedal feel. It is too touchy.

stephen wilson 09-01-2013 06:55 AM
You could also reduce the brake booster assist with a vacuum regulator.

Eric523 09-01-2013 07:17 AM
Quote:
Originally Posted by goldsc_78258 (Post 360346)
in the end I would like to run a dual master cylinder set up but for now it works fine.
the dual master set-up really changes the pedal feel. It's hard to drive the boosted brake systems in other cars on track now. Cockpit adjustable knob for bias, and a stand alone BMW M3 ABS unit is optional depending on track surface.

http://i1089.photobucket.com/albums/...ps3f65e62d.jpg

Kroggers 09-01-2013 11:00 PM
Eric, are you willing to share details on your set-up for others to do a DIY and reproduce what you have done?


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