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Originally Posted by Bowtieracing
Thanks chicane for your professional input on this. Well i have figured if i have the Z06 brakes the Z06 master should work well with em.
Can you tell me what is the P/V ratio? Do you mean pedal ratio? Is 3/16 bigger or smaller than Z06 lines are ? But what if use adjustable brake balance valve on rear line? Can i then make the front line straight from the master to front calibers with out any metering blocks ?? I was going to use seme size lines as Z06 and yes get the tubes from inline. I have allready bougt the tools to make the end for stainless tube 
Anything else wich i should take into consideration ? Fellow forum member Jeff has helped me a lot with parking brake solution-he is one of the friendliest guy i have ever met  |
P/V ratio = pressure to volume ratio.
Basically my direction in this was for you to re-create the majority of the system you are using, to minimize any modulation, bias or pedal feel problems. With the factory OE line sizes of the chassis you are building, (example: 3/16 front and 1/4" rear on a first Gen F-body) and the introduction of newer/later model components (that use 3/16 front and 3/16" rear)... I feel that it would be a good move to emulate as much as you can from the donor system so that you dont introduce further problems that would require more troubleshooting and/or monies being spent to correct those problems.
I myself, am utilizing the same APRacing brake kit's that were designed for the C5/6/Z06... on my 67 F-body. So what I went after to emulate this system was to first establish the proper line sizes front and rear to maintain the stock/factory pressure to volume ratios... this was for more than one reason, but we'll stay on this point for sake of this discussion. The C5/6/Z06 uses 3/16" to the front and rear calipers from the ABS pump/motor. Now... if you have the same master, the same line size and the same calipers... you are WAY ahead of the game in getting this right the first time around.
In my own doing, since I was already replacing the front brake hardlines, I thought why not do a linesize change when I order the rear to keep it going in the right direction. In dealing with Inline tube I learned that they would make me anything I wanted for an exceptable cost. So, I ordered a stainless one piece rear line, along with the front pieces. I think it cost me $73 for just the rear line... thats a good deal to me for what I was trying to accomplish.
And IMHO, an adjustable proportioning valve is a bandaid in a brake system... and the less componets you have or use, the better. Yes if you keep the 1/4" rear linesize, it will require a rear prop valve. Second question, yes you can plumb directly to the calipers without going thru a distro/metering block. FYI... the C6/Z06 system did away with the metering block all together.
If I were to use an off the shelf master, I would give Doug Rippie a call and order one of his units. He even supplies a prop valve for the C5 units... it looks like this:
I have worked with Doug and his son on various projects over the past several years and specifically on a manual dual master cylinder C5/6Z06 set-up... so this subject is a little familiar. As is doing an ABS retrofit. I think this would be the direction I would consider if I were doing what you are trying to accomplish. I myself, have gone to dual independant masters with a balance bar... in a manual set-up.
Hope some of this helps or at least makes some kind of sense.
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
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What master cyl have used with Z06 brakes?
Thank you so much for clearing this for me at once! Yes you read my mind i want to keep as much as possible on factory desing to get the fool proof combination. 
Linear Mode
