Spongee brakes...

[Tailites]

I will figure it out...I always figure stuff out...

with your help of course...

[ZR]

I've had several in with discy conversions that "felt fine".
Does need the correct master
Suggest prop valve delete with external / adjustable valve.
Stuff from Maximum Motorsports is priced very affordable and comes as a bolt on kit (lines etc come made up) and looks more stock vs stock.

[tulowd]

several guys did the conversion with no prop valve & it worked fine

act of god. For the sake of a few dollars and some fittings, it's unsafe and stupid not to put one in.

Have any of these guys tested the brakes for rear lock up under various conditions? Having your rears lock first is not fun when you really need to stop and or avoid obstacles. By the same token - if not enough pressure goes back there, the rears aren't doing their full job, which is to help the fronts decelerate the car at the highest possible rate. A balanced braking system is awesome and makes any car safer.

[Tailites]

did the set up work initially and deteriorate to this state or is this a new install/conversion?

no...its always been a bit spongee...theres air somewhere

[ZR]

-calipers on at the correct angle to properly bleed?
-parking brake hooked up?

[svo1990mustang]

New calipers? Are they on the correct side?

[Tailites]

-calipers on at the correct angle to properly bleed?
-parking brake hooked up?

yup

[Tailites]

New calipers? Are they on the correct side?

yup...bleeders at top

[Tailites]

act of god. For the sake of a few dollars and some fittings, it's unsafe and stupid not to put one in.

well I guess the Lord knows Im stupid & cut me some slack cuz the car stops fine...

have you honestly tried a conversion with no prop valve?...

then you really dont know...

what I do know is it works...come & drive the car & tell me otherwise

my car is turbo...you think Im going to be goofy with brakes?...hardly

[tulowd]

oh ok; because you haven't installed it and it seems to work, it must be fine? The factory knows the weight bias and performance of the car, so they can design a non adjustable diverter.

For the amount of effort dough and knowledge you put into your car this is disappointing.

Oh, and you have spongy brakes, but they work fine? If you are not getting enough pressure in the system you are not maxing out braking performance.

Research and see which master cyl you need for this. When I installed T bird rear discs on my 84, I had to use a MC from a full size like an LTD I believe.