80mirada
Well-Known Member
working on building a dual snorkel breather
80 Mirada,
- Thread starter 80mirada
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working on building a dual snorkel breather
80mirada
Well-Known Member
Working on fitting a B&M Megashifter
MiradaCMX80
Well-Known Member
Just read all 9 pages....what a beauty! Interested in the Cherokee rear disc setup. What was done in the front? Driving mine home today, the brakes are weak, and I noticed underneath the car that the parking brake cables arent even hooked up.
80mirada
Well-Known Member
The fronts are B/R body 11.75 rotors and caliper mounts with stock calipers. DoctorDiff carries the brackets and then you just need rotors for a 78-9 Cordoba or 79-81 St Regis. The rear discs are off of a 96 Grand Cherokee, 04 Liberty are similar and both pretty much bolt right on. The park brake cables are the hardest part of the swap.
Doctor Diff caries the rotors too. $150 for the pair and they're slotted/drilled/plated. I didn't think it would make nearly as much of a difference as it did in the braking performance. Was really surprised.
80mirada
Well-Known Member
got the mount built so the shifter is solidly mounted
MiradaCMX80
Well-Known Member
...and you're running an 8 3/4 rear end, correct? The Cherokee brackets are used, and I believe you had to open the center hole a bit. I gotta go back and re-read. So I would need DoctorDiff front brackets, stock Mirada cals, and Cordoba/St. Regis rotors? Soon I'll go thru my brakes...I feel like the rear drums are not adjusted properly and the front is doing all of the stopping.
The Cherokee rear disk brakes and the Liberty/Wrangler rear disk brakes are similar but different (nothing interchanges between the two groups). The Liberty rotors are a lot easier to find, Liberty parts are less expensive and I hear the Liberty system works better – but either version has to work better than drums.
Either system (Cherokee or Liberty/Wrangler) will fit onto 8¼” or 8¾” differentials (as well as 7¼” and 9¼”) - but the 8¾” is a bit more tricky because of the axle side clearance setup (if using the factory adjustable axle bearings – which are high recommended for street usage).
I don't know about Cherokee backing plate hub sizes (needing ground out) but the Liberty system is a straight bolt-on affair.
BudW
Either system (Cherokee or Liberty/Wrangler) will fit onto 8¼” or 8¾” differentials (as well as 7¼” and 9¼”) - but the 8¾” is a bit more tricky because of the axle side clearance setup (if using the factory adjustable axle bearings – which are high recommended for street usage).
I don't know about Cherokee backing plate hub sizes (needing ground out) but the Liberty system is a straight bolt-on affair.
The fronts do 60% (or more) of the work on pretty much any car. If feels more like 80% of the work, on my cars. I think this is why Chrysler never do much with rear disk brakes because of the amount of work they performed vs. production costs (maybe).
BudW
80mirada
Well-Known Member
I'm running and 8.25 rear. The Liberty setup is easier to find in Salvage yards. Crown Automotive offers assembled backing plates and brackets. The two setups are essentially the same, but dimensions are a little different.
MiradaCMX80
Well-Known Member
I'll really consider this for mine. I crawled under the car last night and it appears to be an 8 1/4 axle (oval diff cover, 10 bolts, straight axle tubes.) Perhaps when I have the 3.23 gears installed, I can do the brake swap. What about a proportioning valve?
80mirada
Well-Known Member
I bought a new one for a Chevelle with four wheel discs conversion off of ebay.
80mirada
Well-Known Member
CPP PV-24 proportioning valve, I got it with the bleeder tool also since I was building a new brake system
80mirada
Well-Known Member
Painted and waiting for decals
MiradaCMX80
Well-Known Member
That looks great!!
80mirada
Well-Known Member
in the air to get to work in the trans tunnel
80mirada
Well-Known Member
on the floor ready to start its rebuilding
80mirada
Well-Known Member
front section torn down, and the case is clean and ready for paint
80mirada
Well-Known Member
Alto clutches, to increase the number in each clutch pack. Either a 5.0 or 4.2 kickdown lever, new springs in the front clutch, possibly a beefed up rear planetary, and a shift kit.
80mirada
Well-Known Member
Case cleaned and painted. Just waiting for parts to begin arriving.
