Can anyone provide me with with some feedback on the PIM brake booster and master cylinder? Function is most important to me, but I'm trying to keep the car as original looking as I can.
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I have no experience with either part but am looking at a new Master Cylinder and will buy one of these which is a Bendix part for the Get 1 MC - direct replacement "supposedly". I have not done my research yet on direct part number interchangeability. Both suppliers have an excellent reputation. I would not waste money on a rebuild given it is 53 years old.
https://www.okp.de/xtc2/Ferrar...122.html?language=en
https://www.superformance.co.uk/308/brakes.html
As for the booster, per Steve, I would have it rebuilt.
ABS Power Brake, Inc. in Orange, CA. ABS Power Brake (CA)
ABS master cylinder supposedly gives you 1 1/8 inch piston diameter. I got that on my car bought from PIM..
my guess is that they bore the master to the to the new piston size! Therefore rebuilding would be acceptable in my book!
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Patt- thank you for the great cross references on the master cylinders, very useful. Lemans- from a lot of reading on this site, my impression was that I wanted to stay closer to the 1 inch master cylinder size. I will be changing over to the mid-level SACC Wilwood kit as soon as it arrives and I’m not sure how that will affect things. Scott at SACC thought I’d be fine with the Ford (1” ?) M/C that I currently have, so it seems like right move is to get some seat time in with the new brakes and see how it all works. My reason for considering the change is simply that all this stuff is 50 years old, and while it was out of the car, I might as well change it out.
The brake pedal effort increases as you increase the master bore.
1" would be the maximum to go to on a car. Even that will give you a much heavier pedal.
1-1/8" is very heavy.
The stock bore of about 7/8 to 15/16" is just right. It doesn't matter what calipers you are using with that.