Llamaback
Well-Known Member
Hi all, I have a question about the bendix power brake boosters.. I have a bendix power brake booster that I bought from Dr Diff and I measured the stroke that the pushrod coming out of the booster travels and it is right around 1.185'', (I measured this with the booster on the car and also just now off the car, with no vacuum being applied to the booster. The stroke of the master cylinder I am wanting to use is right around 1.430'' (Dorman M75818). So the bendix pushrod is a quarter inch short of being able to push the master cylinder the full length of its stroke. I measured the stroke of the master cylinder with no fluid and used an old brake pedal pushrod to get the measurement. Shouldn't the stroke length of the booster pushrod be able to bury or bottom out the master cylinder stroke at full travel?
Does vacuum being applied allow the booster pushrod to have more travel?
the aluminum master cylinder I got in my Dr Diff kit has a stroke length of 1.260'' so the booster pushrod still comes up short with this one
My original drum drum 1970 master cylinder has a stroke length of 1.115" so the booster is able to bottom this one out.
Am I over thinking this? I emailed Dr Diff this question but have not heard from him in almost two weeks. Thanks for any input!
Does vacuum being applied allow the booster pushrod to have more travel?
the aluminum master cylinder I got in my Dr Diff kit has a stroke length of 1.260'' so the booster pushrod still comes up short with this one
My original drum drum 1970 master cylinder has a stroke length of 1.115" so the booster is able to bottom this one out.
Am I over thinking this? I emailed Dr Diff this question but have not heard from him in almost two weeks. Thanks for any input!
