[chrism]

I am running discs in the front and drums in the rear.Do I need to use the distribution block? I know folks who are running four wheel discs without it.Thanks. Chris Meyer
Boynton Beach.

 

[MCathcart]

Chris,

Geesh... I can't give you an answer if it's needed but if I were you, I install an adjustable bias adjuster. I have the same brakes (disc and drum) and I can lock up the fronts in extremely hard braking! I think it's because the Mustang weight is not 48/52. The in the Mustang you could use more front brakes since it had more weight on the fronts.

I am curious if anyone built the car without it and how the brakes work.

Next?

Mike
FFR 2335 & 3817 SB

 

[FFR1668]

I believe....correct me if I am wrong, but the d.box also acts as a safty redundency system.
If a brake line were to burst on FL you would still have RF and LR brakes. Seems to be important es. since you can not reach the e brake if you aree strapped in tightly.

Cheers Bill

 

[Frank n Sons]

If you are using a single resivouir brake fluid system, you need the block for safety. If you develop a leak in either the rear or front, the remaining front or rear brakes will still work. If you are going to use the older duel fluid master cylinder system, you do not need the block.

Frank n Sons.

 

[paul burchett]

If you are using a single reservoir brake fluid system, you need the block for safety. If you develop a leak in either the rear or front, the remaining front or rear brakes will still work.

There is no info in the Ford shop manual to indicate the above statement is true. There is also no evidence in the cut-away diagram of the proportioning valve that indicates the proportioning valve could act in this manner. In fact, the left front brake is supplied with fluid directly from the master cylinder. There is no way the proportioning valve could keep all the front brake system fluid from being pumped out of a leak at the left front. Also, both of the rear brakes are supplied with fluid from the same line. How can a leak at one rear brake not cause the entire rear brake system to be drained of fluid? The following is a post I made last week on this same subject. The info in it is directly from the Ford shop manual.
Last week's post:
Fang, both front brakes always have full pressure applied to them. The proportioning valve determines how much of the available pressure goes to the rear brakes. The reason the right front brake flows through the proportioning valve, is that the proportioning valve also has a shuttle valve in it. If the front brake system should fail (little or no pressure), the shuttle valve changes position so that the proportioning system is by-passed, and full pressure is applied to the rear brakes.

 

[Cobra54]

I went to rr disk brakes and have an adjustable valve that is not installed yet - does anyone have a distribution block that has already been modified - and wants to sell it? email me.
[email protected]
thanks

 

[FFR-3570]

I had Rich Oben down here from the frozen tundra about 3 weeks ago and he took one look at my factory MC and PV and took me to the auto parts store... Using the existing Ford Rod we bought the Jeep MC (manual brakes and referenced all over the BBS), A Tee fitting (for the Front lines) the necessary fittings to run the line and I think I spent a whopping $28 bucks with the core (returned the donor ford MC), I then ordered the Summit PV and (now upto $68) have a very clean setup for rear drums that is rear Disk ready! Oh had the break pedal arm cut too!
$25 more. The Jeep MC has 2 lines for front/rear, you run the front to the Tee and split them off then you run the rear to the PV and then to the rear line (where it splits its-self at the Dif. Hope this helps

Rich

 

[oldguy668]

I have a Ford d-block intended for use with a 2-port MC that has had the Ford Motorsport prop valve plug installed, so it can be used with an adjustable Wilwood or equivalent. Make me an offer I can't refuse.

 

[wnstwolf]

As my good friend oldguy joe hinted at, the ford motorsports m2300k cobra brake kit instructs you to tear apart the distribution block and add a plug...

this is with front and rear disks with a supplied manual adjuster valve.....

 

[thunderball]

So, is the prop valve a safety device?

I also thought not. I thought it was just a proportioning valve for bias. I'm running four wheel discs( stock '95 up front and '98 gt in the rear, and the car brakes fantasticly with no bias problems. I plumbed from the mustang mc straight to the rubber lines. The reason I did this was because I noticed everyone running their prop valves wide open or gutted distribution blocks.

Get your fuel lines run yet chris? Maybe come down your way on sat.

chris bailey

 

[Cobra54]

if you have the single tank mc the distribution block is also a "safety" devise. I need detailed directions on how to modify the existing block for use with rear disk brakes. I've done a search but couldn't find the instructions. Can someone provide the instructions or a modified block that they aren't using anymore?
Oldguy 668 - thanks, but I'm using the single tank mc.
Greg

 

[oldguy668]

I didn't say my d-block was for a dual tank MC, it's for a single tank , 2 pipe MC. It's a different block than what would be used on a 3 pipe MC.

 

[venomous]

HooDoo,

Much of this talk is related to Rear Disk set ups.

You are using the standard stock Rear Drum set-up. Use the distribution block. This is the way the Smiths designed their braking system to work, and it does just that – It Works.

Don’t screw with something you do not need to. I have the stock set-up (rear drums), and with the pedal arm mod, and the distribution block, I love my brakes. I can lock them up with moderate force, the fronts will lock first, and it tracks perfectly straight under emergency stopping requirements (been tested ).

Regards,

 

[Cobra54]

joe, oldguy, you got mail.