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On 24 Aug 2005 at 12:53, Russ Wolfe wrote: > Your 153mm to the center of the hole sounds too long. The spec in the > old Bentley is 149.5 +/- .5mm for dual circuit brakes, and 143.5mm +/- > 5mm for single circuit brakes. If the tolerance for both was 5mm (not .5mm) then my pushrods would be within tolerance for tandem MCs. I really don't know for sure that these have never been tampered with, but I suspect not. > I went out and measured the one from the '64 T-3 Ghia and it measures > 145.3mm. I measured the one from my parts car, and it came out at > 149.1mm Both would be in spec according to the Old Bentley. The Ghia > bulkhead is different from the regular T-3, as there is an extra panel > in there. The same pedal stroke requirement would be in play, however, since brakes are the same (I think.) > BTW, the master cylinder is mounted to the pan, and not to the > body. So, slop in body bolt holes on assembly wouldnt make any > difference. Isn't the cross panel that we measure to part of the body? > I wonder if the difference is in the single and dual master cylinders?? I don't think so, but I don't have a simplex MC to measure here. If someone will send me one for rebuilding. I'll measure it and publish the results. I guess I'm gonna have to make myself one of those templates.... ;-) -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~