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View Full Version : Re: conversion to disc brakes

Rob116
10-31-2003, 12:32 PM
For Christmas, I'm planning on "coming into" a new posi rear that has discs. I've heard a couple of different opinions on this. One side says that I'll need a new proportioning valve, etc. in order for the discs to operate. The other says that the brake lines shouldn't even need to be modified. Not having a rear disc system at my disposal to analyze and figure this out for myself, I'm wondering if anyone would be able to share some first hand, or even good second, third, or fourth hand experience with me!
iroc22
10-31-2003, 02:03 PM
With the 89 up PBR calipers on the rear discs, they used the 84-88 disc/drum proportioning valve.
IROCNParts
10-31-2003, 09:09 PM
For Christmas, I'm planning on "coming into" a new posi rear that has discs. I've heard a couple of different opinions on this. One side says that I'll need a new proportioning valve, etc. in order for the discs to operate. The other says that the brake lines shouldn't even need to be modified. Not having a rear disc system at my disposal to analyze and figure this out for myself, I'm wondering if anyone would be able to share some first hand, or even good second, third, or fourth hand experience with me!


what year is your car?
86 airborn
11-01-2003, 07:25 PM
my guess is an 86 Z28 ;D
and its probly red
Drakar
11-01-2003, 07:47 PM
as I read the 1LE's (not confirmed but almost positive) used the same prop valve and master as the disc drum setups.


1LE = ~12" front/rear discs
IROCNParts
11-01-2003, 10:41 PM
as I read the 1LE's (not confirmed but almost positive) used the same prop valve and master as the disc drum setups.


1LE = ~12" front/rear discs


im not too sure about the prop and master... I changed mine... better to do it id say?
iroc22
11-02-2003, 02:00 PM
All the 89-up 4 wheel disc cars use the 84-88 disc/drum valve from what I have seen....
Rob116
11-03-2003, 12:15 PM
Thanks very much folks!

Drakar: I'm sure that it would be better to change it, but I'm running on such a tight budget right now that I'm afraid she's going to have to be a direct bolt-in.

Of course, that depends on what new proportioning valves cost... I'm guessing over $100? (I'm broke. I could afford it, but then I'd have to go without food or school. Probably food. ;) )
IROCNParts
11-03-2003, 10:42 PM
Thanks very much folks!

Drakar: I'm sure that it would be better to change it, but I'm running on such a tight budget right now that I'm afraid she's going to have to be a direct bolt-in.

Of course, that depends on what new proportioning valves cost... I'm guessing over $100? (I'm broke. I could afford it, but then I'd have to go without food or school. Probably food. ;) )


Id get ya a complete read disc brake swap w/prop and master, ebrake cables, and whatever else you wanted for $350
Rob116
11-03-2003, 10:51 PM
Hmmmmm.... talk to you in a month :)
IROCNParts
11-05-2003, 09:01 AM
Hmmmmm.... talk to you in a month :)

goooooooooooooooooooooooood
lol
Rob116
12-09-2003, 10:42 PM
Id get ya a complete rear disc brake swap w/prop and master, ebrake cables, and whatever else you wanted for $350

If that offer's still on the table, I'm now officially interested! :D

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