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More braking power needed
(05-19-2019, 12:24 PM)Don C Wrote: Is the first part of your last post missing?

Have you verified that the problem is the booster and not a connection, or even an internal leak in the pump?

I am now 99% sure that the booster is  somewhat leaking . I renewed the  check valve and the  rubber grommet - no change. The pump continues in tiny burst when connected to the  booster...

I have  noticed that there  are many offerings for a 9 " booster  ( four  bolts connection) but what would you recommend for the 71  Mach 1 with original front disc brakes ?
I want to be 100 % sure that it fits  the car  and the  newish master cylinder.
I have one from LEED brakes: https://leedbrakes.com/i-21155650-9-inch...black.html
You may have mentioned this earlier, but did you try capping (with finger works) the hose to the booster to make sure the leak is not somewhere else? During my install I had one leak that was a nightmare and after a lot of troubleshooting I figured it was one of my customized metal fittings that had a cracked.

        [Image: 20160929_171923_edit2_small.jpg]

1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump
Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes
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