Wilwood brake master cylinder question

Hello all! So I have a wilwood master cylinder with proportioning valve combo that I'm about to bench bleed and install. In running manual brakes and 4 wheel disc brakes. My car was originally a power brake car so I have acquired the manual brake pedal and hanger that goes under the dash. They are installed.

Per the Wilwood instructions... you want to have full brake pedal throw to bottom out the master cylinder before your brake pedal hits the floor. If I set it up this way, my pedal sticks out pretty far from the floor. .. like 8". I feel like I would have to raise my foot up to hit the brake pedal. No bueno for a performance mod.

My questions... how high does the brake pedal go from the floor?
Since I have no reference, can someone please measure the height of both the gas pedal and brake pedal from the floor? My car has no interior yet so I'm working with a metal floor here. Maybe some pics so I can gauge the right pedal height? Thanks.... as I have absolutely no interior.


Also.... do you need 100% of the pedal throw? Can I shorten the master cylinder push rod (it's adjustable) and use only 75% of the throw to lower my pedal to whatever height it should be at? I've never had a brake pedal go to the floor unless I spring a leak.

Thanks foe the help!

Have similar setup as you, 4 wheel manual disc. Photos should help get you going.

THANKS CRUSH!!
I'm assuming your carpet/sound deadener is about 1/2" thick or so? Thanks for the pics. I owe ya one!

Gas pedal

Anyone running a wilwood master with their adjustable brake cyl linkage? Are you set up for full pedal throw before bleeding the master cylinder?

Ripper679 said:

THANKS CRUSH!!
I'm assuming your carpet/sound deadener is about 1/2" thick or so? Thanks for the pics. I owe ya one!

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1/2" about right on the carpet and padding.

Here is mine over carpet and insulation. 5 7/8 to pedal. I did not change the pedal height but adjusted the rod of the Wilwood MC

Thanks Tony... I like your pedals!

Older thread, but do you know if you can use this Wilwood master cylinder with the factory booster?

4thesporty said:

Older thread, but do you know if you can use this Wilwood master cylinder with the factory booster?

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No.... it's basically a stand alone deal.

4thesporty said:

Older thread, but do you know if you can use this Wilwood master cylinder with the factory booster?

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Yes, I don't see any issues. I am using a LEED booster, which is a replacement option, with my Wilwood master and no problems.

tony-muscle said:

Yes, I don't see any issues. I am using a LEED booster, which is a replacement option, with my Wilwood master and no problems.

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Well.... there ya go..... I'd trust Tony's advice as it's firsthand. I was told it was a standalone deal by the Wilwood techs.... but I could have gotten the, "new guy". Two things to Consider.... research the piston size in the Master cylinder, they make different sizes for fluid volume being pushed and also you may need an adjustable linkage. Maybe.

Perfect, thank you

I am running the wildwood master cylinder on my 71 with an aftermarket booster, i can't remember the brand, it works great no issues. I made this upgrade about two years ago and no issues, and that includes the adjustable proportioning valve.

Thanks DLC, are you disc/drum or 4 wheel disc?

I am collecting parts to go 4 wheel disc right now (factory power disc brake car) including upgrading the front to S197 brakes.

Is there any advantage going to a Wilwood master/ prop valve over a factory style master/non adjustable prop valve like the one CJ pony parts sells for a disc/disc setup?

Trying to decide if it is worth the cost.

The downfall of the Wilwood besides price is that to check fluid level you need to remove the cover which has 4 Allen screws. The stock system has a cap that is clamped and easy to remove. Another option is a system with a plastic reservoir like the newer cars as long as it fits under the hood.

I am 4 wheel disk, but I am also running wildwood on my disk and calipers. Made upgrade to my suspension and to me it made more sense to do that upgrade.