Re: Getting ready for a Treadle Vac Replacement

Posted by PackardV8 On 2015/1/25 16:52:12

IT is quite possible that he can use a SLIGHTLY dhorter stroke aftermarket MC. Note that the OEM BTV usess up, i'm guessing, about 3/16 of the stroke before the compensator is fully closed.
On a conventional design cylinder it is probably only about 1/16" to cover the pee hole from the reservoir.

He will just hace to measure the BTV to see how far the ram moves before the Comp port is fully closed. Then compare that to the movement of the aftermarket mc.

Hopefully any aftermarket MC he chooses will be close enuf in all aspects to retro fit without having to worry about much fine or precision measurements.