rear disk conversion

[TurboII]

Hi, I have a 1988 lebaron turbo and wanted to know what donor car do i have to take to get the rear conversion set up out of also what is needed.

Thank you
Joey

[ShelGame]

I think I've got everything you need for sale here (http://www.turbo-mopar.com/forums/showthread.php?t=10376). I'm taking the rear disk brakes off my Daytona C/S...

[turbovanman]

You need the discs, calipers, brackets and lines. You can reuse your original spindle and e-brake lines. You should replace the prop valve but try it first and see how it works. I would also upgrade to the 24mm mc.

[TurboII]

whats the differents between a car with drum or discs when it comes to proportion valve

[ShelGame]

The pressure to the rear brakes is different for disks than for drums...

[capev86]

disc brakes require more fluid to operate, especially since in this case the piston diameter is about double that of the old drums.

[nomadman2001]

whats the differents between a car with drum or discs when it comes to proportion valve

It is actually a combination valve; proportioning valve to distribute pressure front to back - usually about 70/30, a differential pressure valve that tells you if there is trouble with either the front or rears and kicks the light on the dash, and finally for drum brakes a metering valve to allow the spring pressure on the drum shoes to be overcome prior to the front discs appling - this applies to front disc/rear drum cars only. Also, see this article:
http://auto.howstuffworks.com/master-brake2.htm

[capev86]

also, if you are going to get the cs/shelby rear disc (which are likely vented disc) you should get the corresponding 11" front brakes from ShelGame also. if you just want to upgrade the rear brakes, id grab all the parts off the rear and the prop valve off a car with solid rear disc. many lebarons and lesser daytonas from 89 and newer got the solid rear disc!

[ShelGame]

My car had already been converted to 10" front disks to fit my 14" centerline wheels.

[TurboII]

my car has the 11" rotors for the front

[TurboII]

even if my car had the shelby rears dics what would happen ....lock up. but what if i have the right proportion valve on it.

[turbovanman]

Maybe or the brake bias is wrong, IE rear brakes work more or less or vice versa.

[TurboII]

so what kinda brakes would you need up front 11" i was told if that the case i would be good cause thats what i have

[turbovanman]

You can't go wrong with the 11 inch front brakes. :thumb: :partywoot:

[TurboII]

cool all be good then