I have a AH sprite that is a pain to bleed so I use a old cap with a compressed air fitting.
Pressurize with 50 psi and crack a bleeder and away you go
Hey Pete,
That’s a great idea, You’ve got me thinking!
Great idea for those pressed out Master cylinder tops to get a spare top and modify it and a spare rubber gasket with a hole cut in it.
I could just drill and tap 1/8” bsp hole on my Wilwood top, make a temporary rubber gasket and fit a plug after job finished.
There is a breather hole you on the top you could hold a pressure regulated air hose against but that would mean I’d have to get my wife involved.
She hasn’t got the enthusiasm or patience needed.
They really push bench bleeding new or refitted Master cylinders, but if can’t see why you couldn’t fill the master cylinder by very very slowly drip filling the Master cylinder. Allowing the air time to escape, not getting trapped, but there could still be air pockets where only bench bleeding can remove?
Hope everyone reading this have a good think about their situation!
Cheers Phil.