Master Cylinder question

[amalventano1@comcast.net (Allyn)]

I thought the g60 and 16v mc's had the same bore, but the g60 has a longer stroke.
Al

----- Original Message ----- 
From: "ATS - Patrick Bureau" <pbureau@attbi.com>
To: <scirocco-l@scirocco.org>
Sent: Thursday, March 14, 2002 7:47 AM
Subject: RE: Master Cylinder question


> Agreeing with you on the subject of upgrading the master cylinder should be
> done by compairing pressure and what is needed to make everything work
> "better".
> 
> Though I was required to upgrade from 20.4mm to 22.2mm Master cylinder (to
> be able to support rear disc brakes and front disc 10.1 upgrades).
> 
> I did perform the logic between the 16v master cylinder and the G60 Master
> cylinder, and in a previous post I did display the difference between the
> two, basically the G60 MC has the identical lenght in stroke, but the bore
> of the G60 Master cylinder is smaller, and if I understand the law of
> hydrolic fluids (fro the years back at working at a hydroloic shop called
> Wainbee (manufacturers of hydrolic pistons and lifts ). if you have pistons
> (because that is what a master cylinder is after all, 2 pistons shifting oil
> around.) that have the same stroke, but one has a larger area (bore) and the
> other one is smaller;
> 
> The larger bore, will require less pedal travel to push the oil to its
> destination, but will have less pressure on the piston.
> The smaller bore will require more pedal travel to push the oil to its
> destination, but will have more pressure on the piston.
> 
> and since the stroke is the same and the bore is smaller, and the price is
> cheaper, why not get the G60 over the 16v MC?
> 
> Patrick
> 
> 
> Now when it comes to 11" the G60 is an 11" brake MC. If you are to find a
> 25mm MC try to fiond one with a bore of almost the same size, that way you
> will have more power and less pedal travel all in one. But so far, the
> prices really don't warrant this unless you are going to 13" wheels.
> 
> 
> 
> =>-----Original Message-----
> =>From: scirocco-l-admin@scirocco.org
> =>[mailto:scirocco-l-admin@scirocco.org]On Behalf Of Brett Van Sprewenburg
> =>Sent: Wednesday, March 13, 2002 10:20 PM
> =>To: scirocco-l@scirocco.org
> =>Subject: RE: Master Cylinder question
> =>
> =>
> =>A better braking system starts with the tightest possible tolerances
> =>and the least flexible
> =>parts...other improvements can be made as I detailed previously.
> =>Seeing as how few
> =>people actually do that, a larger MC might be able to help...but we
> =>should all stop
> =>believing it's due to the higher pressures of a larger MC.  We might
> =>want to try and
> =>firm up the rest of our braking system as much as possible by
> =>replacing worn brake
> =>calipers (or leaking seals) and rubber lines before diving into
> =>another MC.
> =>
> =>==Brett
> 
> 
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