Multiple problems with bleeding brakes
One person bleed the old fashioned way:
Hold the pedal to the floor with a heavy weight or a stick propped between the pedal and something.
Sealing at the combination or prop valves:
Like A/J mentioned I can't recall anything other than a SAE double flare. The flare seals to a matching cone. Thread in until the flare touches the seat, then tighten a fraction of a turn more so its snug. Sometimes there is an adapter fitting going from NPT tapered to SAE double flare.
Some illustrations:
Brake Line Flares: Metric & SAE, Inverted & Bubble - Race & Track Driving (formerly Win HPDE)
http://www.fedhillusa.com/webnuts/common flares6.pdf
This M/C has adapter fittings:
This proportioning valve does not, the seat is pressed in.
from: 1967 Imperial & Chrysler Disc Brake System - Session 233
One person bleed the old fashioned way:
Hold the pedal to the floor with a heavy weight or a stick propped between the pedal and something.
Sealing at the combination or prop valves:
Like A/J mentioned I can't recall anything other than a SAE double flare. The flare seals to a matching cone. Thread in until the flare touches the seat, then tighten a fraction of a turn more so its snug. Sometimes there is an adapter fitting going from NPT tapered to SAE double flare.
Some illustrations:
Brake Line Flares: Metric & SAE, Inverted & Bubble - Race & Track Driving (formerly Win HPDE)
http://www.fedhillusa.com/webnuts/common flares6.pdf
This M/C has adapter fittings:
This proportioning valve does not, the seat is pressed in.
from: 1967 Imperial & Chrysler Disc Brake System - Session 233
