Re: Getting ready for a Treadle Vac Replacement

Posted by PackardV8 On 2015/1/24 8:58:14

The 13/16 bore of the Honda unit compensated for the shorter stroke of the Honda unit relative to the rather LONG stroke of the BTV.

Note that any attempt to fit a modern MC unit to the OEM BTV power unit will create cleaaarence problems at the frame.

LOOK at the 55 56 frames. The very front most point of the OEM BTV MC haas maybe 1/8 frame clearence. That is why the BTV mc is rather SHORT compared to most master cylinders. LOOK at the frame!!! There is a slight indention in the frame to allow the BTV mc to fit and clear the framee.