Master Cylinder swap compatibility question/s:


- (a) Original configured master cylinder on my 77 F-150 4 X4 and noticed over the weekend on my 1993 F-150 that the master cylinder mounts looks almost identical, are they compatible?


- (b) If they are compatible and if anyone has done the swap would certainly appreciate any insight, listing what's involved including parts that should be on hand before starting the task. Thanks

 

You can use Oreilly's for compatibility checks...there are probably others

Not sure if this link will work but it found 830 other vehicles w. the master cylinder I looked up. So yes probably.

Just add your vehicle, look up the part then select the part, then there is a tab for Compatibility.

Home Page | O'Reilly Auto Parts

 

tndallas,


Thanks for the suggestion checking the O'Reilly website compatibility chart of which I did and it indicates the 93 master cylinder will not fit the 77 F-150. Perhaps another member might have some insight before I forget this possible swap idea. Again thanks

 

The real issue is brake configuration and bolt pattern. As long as the master cylinder is configured for your specific brake setup it is generally compatible ie; Disc/Disc, Disc/Drum, Drum/Drum. next variable is bolt pattern, will it connect to power assist diaphragm. Lastly is adjustment of the power assist push rod coming from the diaphragm. One other concern is volume as stated by piston diameter, most F150s are 1" so shouldn't be an issue. If my memory serves me the 93 MC should fit without issues as long as the brake configuration is the same which can also be compensated with an adjustable combination brake valve.

 

RANGER,
What you wrote has been what I've been thinking, but without knowing any technical facts. A few weeks ago on the forum a member indicated his master cylinder lid was leaking, mine was as well until last July 2016 when I resorted to putting a piece of plastic wire loom underneath the bail. And I saw a picture of someone installing a modern translucent brake master cylinder either on their bump or dent side with allot of brake line and a portioning value which got me thinking and prompted my inquiry. Think after finishing three projects, two required to get it back on the road (leaking power steering and functioning lock-out hubs) I'll tackle master cylinder swap. Also have the 3G Alternator upgrade to do and install an OEM AM/FM radio.


On a different note. Thank you for your service Brother. My best friend growing up was a Ranger, served in the 1st 75th Ranger Battalion. During my last deployment 2005/06 in Iraq, my guys installed A/C inside the SPECOPS Stryker vehicles and we built a Morgue. Developed a relationship then with W/LTGEN McChrystal while working out in the gym at 0315 HRS and I asked him to reenlistment me, which was my last active duty enlistment. He gave me one of his CMD coins, I gave it to my best friend, that's the bond Vets have regardless of service for one another. Going to send this reply then park the computer and head out to the fields. Thanks for your input, much appreciated.

 

Hooah Brother!!! Only a Soldier would understand

 

I'm GUESSING you're referencing one or both of the following photos --both are my work.

This I installed in my '69 F100 Ranger.



This I installed in my friend's '72 F100 Sport Custom.

 

What was the specific application on the plastic reservoir MC???? TIA

 

95 Explorer 1 1/16 bore?

 

My truck is a '69 F100, originally with manual 4-wheel drum brakes. I installed front discs/suspension from a '77 F100 (presently, I still have the stock 11" x 2-1/4" rear drums on my truck), dual diaphragm booster from a '75 F350, 1-1/16" bore (disc/disc) MC for a '95 Ford Explorer, and a disc/drum brake valve for an '84-'86 Ford F150/Bronco.

If you're wanting to switch to a 'modern' MC but are needing a 1.00" bore, look at getting a MC from a '90-'94 Ford Ranger. The (metric) bubble flare ports on it will also exit on the left side like the 1-1/16" bore Explorer MC.

 

Thanks.......I suspected Explorer.....was just standing looking at one last night......swapping trannies in my Niece's Explorer.....she flopped hers over on slick roads......found her another one with a bad trans............Me and my big mouth......offering to swap them for her......LOL

 

Hey Steve how is the setup working for you? Did the dual diaphragm booster provide a noticeable difference?

 

Ultra ranger how much of a improvement did you see in braking over stock with the master cylinder and booster upgrade

 

Steve, the parts you used seem to be new. What are the exact part numbers and where to buy these? would it work with a 1977 F150, disc front and drum at rear?
The booster seems new too.

 

No Bumpside F100s came from the factory with front disc brakes. Disc brakes weren't (optionally) available until 1968 ('68-'72) but, this was only on the Bumpside F250s and F350s.

Like all Bumpside F100s, mine came with manual 4-wheel drum brakes --although power 4-wheel drums was optional but, my truck didn't originally have power brakes.

I bought the truck in April, 2011. In early 2012, I installed the F350 dual diaphragm booster and I had a conventional 1.00" bore cast iron MC on it at the time. The smaller 1.00" bore coupled to a powerful dual diaphragm booster and self-energizing 4-wheel drum brakes was not a good combination --WAY too sensitive.

In October, 2014, I pitched the front drums and installed a '77 F100 disc brake front suspension and I replaced the conventional 1.00" bore cast iron MC for the 1-1/16" bore Explorer MC. Since I changed several things at once, I don't know what one component made the biggest difference but, I do know the brakes work phenomenally better now. It comes to a controllable stop and if I need to stop right now, it stops right now. This was not the case before the component changes.