 motthollow
"12th Year" Gold Supporting Member
Posts: 298
Loc: South Carolina
Reg: 01-27-10
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10-17-23 10:14 AM - Post#2863397
Installing a new master cylinder on my ’56. It is known that the push rod sticking out of the booster should be very close, but not touching the master cylinder piston so there is no pre-loaded pressure pushing against it. I’ve seen info that the 3/8"rod is threaded so the proper distance can be achieved. But I’ve got a different situation. I don’t know what brand it is (it was on the car when I bought it). The push rod is located in a blind hole inside a plastic piston with an O-ring near the end of the rod to trap air behind it (like an air bag). The trapped air lightly holds the steel rod against the depression in the master cylinder piston until the brake pedal is depressed which forces the plastic piston to “swallow” the 3/8” dia. rod while it pushes the master cylinder piston forward.
Please tell me I’m not nuts. I talked to Wilwood because I recently installed their rotors, calipers, etc. on all 4 wheels and they never heard of anything like it.
Also: I'm surprised there are no comments or suggestions on the removal of my gas tank filler tube (titled "Is Their a Post on This" from several days ago)
My '56 is on Tony's Lets See Your Ride post on 55-57 Modified forum p.3
"None of my cars will ever be finished... just that some are further along than others."
'56 Sedan Delivery, '55 2nd series pickup, '38 Chevy project |
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