PROPORTIONING VALVES on 16v

[derrickmd18 at juno.com (der flo)]

yea I found the other valve today when I was checking my caliper out. 
its inline.

On Wed, 16 Jul 2003 11:55:13 -0700 (PDT) "toFUNit@yahoo.com"
<tofunit@yahoo.com> writes:
> Very interesting... Talking about braking stuff, I always have to add 
> some
> brake fluid to the container, and I could not find the way where the 
> fluid goes
> out? Everything is dry around the container/valve/etc. so I don't 
> suspend
> losing any brake fluid there... I did bleed all brakes, and nothing 
> seems to
> leak around that either... Any cue about what to check, could this 
> be a leak
> inside the master cylinder?
> 
> thx,
> Joel
> 
> --- Allyn <amalventano@sc.rr.com> wrote:
> > the numbers are actually different than that. the brake cylinders 
> are
> > different diameter front/rear, and the brake rotors are different 
> diameters
> > front/rear, so the prop valves may not be doing a perfect 70/30 
> split in
> > hydraulic pressure, they just do the correct split (whatever that 
> may be) so
> > the end result at the wheels is the desired split in braking 
> force.
> > also, prop valves are set up considering the car is in a braking 
> condition,
> > so this weight distribution turns into something like 85/15 or 
> 90/10 (in
> > extreme cases), as weight shifts from rear to front as you brake.
> > Al
> > 
> > ----- Original Message ----- 
> > From: "toFUNit@yahoo.com" <tofunit@yahoo.com>
> > To: <scirocco-l@scirocco.org>
> > Sent: Wednesday, July 16, 2003 12:11 PM
> > Subject: RE: PROPORTIONING VALVES on 16v
> > 
> > 
> > > To respect the ratio 70% front - 30% rear?
> > >
> > >
> > > --- ATS - Patrick Bureau <txrocco@sbcglobal.net> wrote:
> > > > the proportioning valves are to limit the amoutn of pressure 
> sent in
> > rapport
> > > > to the front in variation to the amount of pressure applied to 
> the brake
> > > > pedals, to limit the amount of pressure sent towards the rear, 
> thus
> > > > preventing wheel lock up and keeping the braking ration to oem 
> specs .
> > > >
> > > > ATS - Patrick Bureau - txrocco@sbcglobal.net
> > > > ----------------------------------------------
> > > > MSN:ATSGTX@hotmail.com |YAHOO:ATSGTX@yahoo.com
> > > > ICQ:32918816           |AIM:Texasscirocco
> > > > ----------------------------------------------
> > > >
> > > >
> > > > =>-----Original Message-----
> > > > =>From: scirocco-l-bounces@scirocco.org
> > > > =>[mailto:scirocco-l-bounces@scirocco.org]On Behalf Of Drew 
> MacPherson
> > > > =>Sent: Wednesday, July 16, 2003 9:51 AM
> > > > =>To: Anson Clement
> > > > =>Cc: scirocco-l@scirocco.org
> > > > =>Subject: Re: PROPORTIONING VALVES on 16v
> > > > =>
> > > > =>
> > > > =>
> > > > =>Bollocks...!! :)
> > > > =>
> > > > =>On the Mk2 Scirocco ETKA calls the vlaves on the 8V and 16V 
> brake
> > pressure
> > > > =>regulators (pressure sensitive.)  Early A2 Golfs are called 
> "load
> > > > =>sensitive"  pressure regulators.   Late Golfs and all A2 
> (and A3 etc.)
> > > > =>Jettas have load sensitive pressure regulators that are tied 
> to the
> > rear
> > > > =>axle beam and vary rear brake pressure based on weight on 
> the rear
> > axle.
> > > > =>
> > > > =>Rear brake shoes on our cars are self adjusting - there's a 
> spring
> > loaded
> > > > =>wedge in the linkage that keeps the brake lining an optimal 
> distance
> > from
> > > > =>the drum at all times.
> > > > =>
> > > > =>So, as much as I'd like to believe it, Anson, I don't think 
> it's
> > > > =>true...:)
> > > > =>The 8V valves are pressure limiting the same as the 16V ones 
> are, only
> > > > =>allowing (probably more) pressure through.
> > > > =>
> > > > =>That's my story, and I'm sticking to it.
> > > > =>
> > > > =>Drew
> > > > =>
> > > > =>On Wed, 16 Jul 2003, Anson Clement wrote:
> > > > =>
> > > > =>> To the best of my knowledge the "proportioning valves" 
> mounted on an
> > > > =>> 8v's master cyl are actualy some sort of check valve. The 
> porpose of
> > > > =>> these wee little bundles of joy is said to be keeping good 
> pedal
> > > > =>> feel/preventing the shoes from retracting too far from the 
> drum.
> > > > =>>
> > > > =>> correct/slap me if I'm wrong :)
> > > > =>>
> > > > =>> Anson
> > > > =>>
> > > > =>
> > > > =>--
> > > > =>/=============================================\
> > > > =>|  84 Wolfsburg Edition TurboDiesel Scirocco  |
> > > > =>|    http://scirocco.cs.uoguelph.ca/gtd       |
> > > > =>\=============================================/
> > > > =>
> > > > =>
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