Best solution for rear differential axle replacement upgrade for rear disc brakes disc

Rear differential flaking and leaking and want to upgrade for rear disc brakes while replacing rear axle

 

I found this while searching.

https://sosperformance.com/products/rear-disc-conversion-with-parking-brake-slash-tr-dot-ps2-dot-ta5


https://www.tundras.com/threads/00-drums-to-discs-rear.101914/#post-2619518

 

I'm looking to replace rear rusty, flacky Axl housing and trying to upgrade the brakes at the same time.

 

The pull-a-part or junk yard might be the cheaper option....or Ebay. That's just an empty housing.

 

Someone did a swap upgrade with a sequoia,
I was wondering what other options where possible.
Just looking for inexpensive options

 

You would be surprised at what your stock drums feel like when they are adjusted properly.
The amount of time and money it will take to swap any axle that is OEM disc into your truck will take a fair bit of work. The sequoia rear axle is wider than yours, about 3" if i recall from memory so your tires are likely going to stick outside your fenders or at least +1.5" per side. Plus the sequoia rear axle uses coil springs, you would need to cut all that off and fab up some spring perches. Plus the sequoia rear disc are running and need nearly 4x the line pressure your master cylinder feeds to the rear brakes. To get rear disc to work right you need to swap the master cylinder as well to get the higher line pressures rear disc need.

You would be MUCH better off finding a junkyard or Ebay axle and putting new shoes on it and adjusting the drums properly and keep going about your day with little to no headache and be stopping WAY better than you do now. A properly adjusted set of drums really gets that truck stopping, it will blow you away the difference they make when they are working properly.

 

Without pics, it's hard to give advice on the leaking part.

For the rear disc swap, you have the wrong cab type for that. The regular cab and access cab axle housing width and axle length is the same for those two cabs, but different than the Sequoia and double cab.

IIRC, swapping the Seqioua housing is doable for double cab owners, but there's still some welding involved for perches. I'm pretty sure @des2mtn has done the swap on his double.

The biggest problem with drums? People don't bleed their breaks right (they skip over bleeding the LSPV, which has a penchant for holding air), and/or they don't adjust the star adjuster right, and/or their parking brake cable is frozen or missing, so the truck can't auto-adjust the brakes per normal operation so even if they are dialed in right, they're out of whack again within a couple thousand miles.

Improper adjustment of the rear brakes on these trucks is a VERY well known cause of sloppy/mushy pedal, and overall horrible brake function on these trucks.

 

I beat you by a minute
I win

 

I've had brake systems problems,
First it was the front driver caliper being replaced every year at state inspection for at least 5 years,
Then finally my brakes failed totally, after replacing the master cylinder, the mechanic knew it wasn't the problem and replaced the booster, mine was 3/4 full of brake fluid. That was in May,
2 weeks ago he replaced both front calipers and pads and did brake lines front and back with redoing rear drum pads, drum pistons and hardware.
It was $1,800 for parts and labor.
And the now the rear clunks / slides over about a 1/4 inch when taking turns,
Not sure if he screwed with something or it's a coincidence that it needs service on bearings or something else,
He mentioned it was flaking and needed to be addressed soon.

 

Where are all of these brake parts coming from?

 

this, I did the gx460 fronts and noticed greater improvement

BUT it wasn't until I bled and adjusted my LSVP (after doing my rear axel seal/bearing) that I noticed even MORE braking power. And now she brakes BETTER than she did with stock shoes.


If you ask me @Kevbev 7 I'd skip the disc brakes, find and refurbish a used rear end. And stick to the drums. Drum rotors should be OEM, there are too many stories of aftermarket's, of numerous brands, coming in out of round or going out round within the first few thousand miles.

there are simply somethings on these trucks that really stay OE unless you're doing custom fab work or you enjoy doing the job multiple times and spending extra $$$

 

Rear disc brake setups have much weaker parking brakes and the parking brake lines from SOS are not that great at all. The OEM drums have superior parking brakes. If your state inspection checks the parking brake in any way, I would stick with the OEM setup.

Also define inexpensive. There's not going to be any other axle housings with disc brakes from other trucks that are an easy "plug and play" swap. Pretty much any axle you try to work with, even with the Sequoia, you're looking at cutting off all the existing suspension mounts and welding in ones that will work for the truck.

Swaps from other trucks likely won't match the axle width, or the bolt pattern for the wheels. You'll have to get custom spacers to convert to Toyota lug pattern which will push the wheels out even further, then regular spacers for the front if you want the front width to be close to the rear. Or you can buy wheels that match your new rear axle pattern, then run spacers in the front to convert from Toyota to your new wheels.

I have the rear SOS kit on my truck but I've had to do a lot of tinkering and changing things around to get it to work right. I've documented it a bit on the forums if you use the search and filter by my username.

 

Ok thanks for the input,
Things go crazy quick.