[DeTomaso] Wilwood Brakes WTF????

[richard bosch]

So what keeps the pistons from retracting too far?
Just curious how it is designed without the valves.
--- On Wed, 4/17/13, Tomas Gunnarsson <guson at home.se> wrote:

From: Tomas Gunnarsson <guson at home.se>
Subject: Re: [DeTomaso] Wilwood Brakes WTF????
To: theemonkey at yahoo.com
Cc: detomaso at poca.com
Date: Wednesday, April 17, 2013, 2:08 PM



No, I have disassembled both master cylinders and calipers down to bare castings and there are no valves.
 
Tomas



<-----Ursprungligt Meddelande----->

From: richard bosch [theemonkey at yahoo.com]

Sent: 16/4/2013 10:52:14 PM

To: Tomas Gunnarsson

Cc: detomaso at poca.com

Subject: Re: [DeTomaso] Wilwood Brakes WTF????









It could be that only the American cars have the valves in the master cylinders.  



Maybe Europeans have them in the calipers or distribution block?



They have to be somewhere in the brake system or else you have a delay in the brakes being applied as the pistons would have a much longer area to traverse before they contact the rotor.










--- On Tue, 4/16/13, Tomas Gunnarsson <guson at home.se> wrote:




From: Tomas Gunnarsson <guson at home.se>

Subject: Re: [DeTomaso] Wilwood Brakes WTF????

To: theemonkey at yahoo.com

Cc: detomaso at poca.com

Date: Tuesday, April 16, 2013, 6:06 AM






Must be an American thing. Euro master cylinders I've come across have no valves built into them.
 
Tomas



<-----Ursprungligt Meddelande----->

From: richard bosch [theemonkey at yahoo.com]

Sent: 16/4/2013 1:10:46 AM

To: detomaso at poca.com

Subject: Re: [DeTomaso] Wilwood Brakes WTF????




Disc brakes require 2 psi residual pressure valves.Drum brakes have 10 psi. valves.

Most master cylinders have them under the flare seat  where the brake lines are screwed in thats why you do not normally see them or think about them.

Without the residual pressure the pistons retract much further in the caliper and there is a delay while the piston has to travel further before it contacts the rotor.Not good as seconds count in braking distance!

Mike's valves are "add ons" because his master cylinder does not have any valves built in.His valve pressure is correct as the pads did not drag on the rotors before the pad wear/cocked pad happened.

Just what i have learned from playing with lots of cars  :  )

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