Big brake upgrade.. problems

[thumper460]

Gotta 93 fox 4 cylinder car.. gonna swap the front disk for a dual caliper Cobra and the rear drum for a disc.. ( have upgraded to a 5.0 5 speed)

Questions.. will the OEM stock master carry this??

Will the OEM proportioning valve need to be changed??

Thanks

Thumper

 

[Chuckman]

if you can, i'd upgrade them now, i think the 4cyl stuff is smaller than the v8 stuff, and i dont know if i'd even trust that. i did a 93 cobra booster and cylinder to be on the safe side with my cobra/drum setup, plus its already done if/when the switch to rear disk comes.

keeping the rear drums, you wont need to touch the valve. if you do upgrade cylinders though, you'll need a 3-2 port conversion.

 

[thumper460]

3-2 port conversion?? Whats that??

Thumper

 

[Adams91LX]

Questions.. will the OEM stock master carry this??

Will the OEM proportioning valve need to be changed??

Time to upgrade the Booster and Master Cylinder, preferably to 93 Cobra units.

I would suggest gut the stock prop, and run an adjustable unit.

 

[jrichker]

Here's some help - this site is tops for brake upgrade info...

See 87-93 Mustang 5.0 Brake upgrade pages. Improve your 60-0 times! for the best and cheapest brake upgrades and 5 lug swaps. The site doesn't sell anything but some fittings, but the tech notes are great. It tells you what junkyard or remanufactured parts to use to upgrade your brakes. It has almost everything you could want to know about Mustang brakes on it.

 

[cardudeusa]

Waiting for Mustang5L5 or Shaolin Crane to chime in.......

 

[Mustang5L5]

If you do NOT change to rear disks, you might now need to change the master cylinder. It depends on what caliPers you run up front? Reason being the cobra calipers have similar piston surface area to the stock 60mm calipers. Therefore if you swap calipers with similar area, the pedal feel stays they same.

I don't have my handy chart with me to tell you how clOse it will be.

And yes, you should gut the stock prop valve and install an adjustable valve.

 

[Shaolin Crane]

Waiting for Mustang5L5 or Shaolin Crane to chime in.......

I no longer chime in, since I have no experience with it
Thank your fellow SN posters

 

[cardudeusa]

I no longer chime in, since I have no experience with it
Thank your fellow SN posters

You were a big help to me, what happned?

 

[Shaolin Crane]

You were a big help to me, what happned?

PM me, no need to muck up the thread

 

[MAC'n89Blckstng]

Run a 93 Cobra booster and Master cylinder, Then get the ford racing plug for the stock prop valve and run an adjustable prop valve for the rear brakes.