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The unit bearing is about a $65-85 fix and about 20 minutes with the right sized sockets.

It’s also possible you have a bad unit bearing. Is it only one side or both that make the noise?

Does it sound like a metal grinding? If so, check your brake pad clips for interference with the rotor.

The goal is to embed or seat the friction material onto the rotor without glazing. The break in procedure greatly improves high speed or panic breaking.

Here is the break in procedure for bmb. It is the same procedure I use in most applications unless there is an application specific procedure from the pad manufacturer: http://www.justaddrocks.com/blackmagicbrakes/Black Magic Pads Iinstructions.doc

Good find on the brake pads. Don’t buy any of those “lifetime warranty” pads. The compound is far to hard. Also, make sure to break in the pads correctly instead of just mounting them and running them. I always run either Centric posi-quiet or black magic pads. Looks like you have the newer style knuckles with the brake pad wings. Here are the pads that work excellent with those: https://www.shop.blackmagicbrakes.com/Front-Black-Magic-Brake-Pads-477-Upgrade-to-Stock-Brake-Pads-F-BMBP-477.htm

I know it sounds stupid, but carefully inspect all your bulbs and sockets.

Aside from rocker guards, a nice transfer case skis is good to have. I plan on adding the JCR off-road skid plate for the XJ. I think it should fit well

Beautiful work! I can really appreciate how much time, effort and skill went in to those

Marty wrote up a bunch of different “big brake” setups for the pre 90 front knuckles. They are good upgrades for sure but before upgrading, go through that list I posted above. People often change or upgrade their system and notice a major improvement because their old parts were defective. This leads them to believe that it was a great upgrade that everyone should do. Others, like myself, have had very little success with some “upgrades” because of some underlying issue that needed to be fixed.

Sounds good

Can do! There is a lot more that can be added and I am by no means the brake master. Most of my info is just my personal experience and long conversations with Blaine from Black Magic Brakes and the rest of our Jeep community.

Hate to say it also but new rotors on old pads is not a good idea. New pads have a sacrificial later that embeds into the pad and help increase braking. If you threw on new pads and then added new rotors latter the sacrificial layer is no longer present on the pads and it will be difficult if not impossible to brake in your pads onto the new rotors

Here is my take after running almost every brake system on my Jeeps. Rear disk do not help improving braking power. Disks have many other advantages though such as better cooling and they are relatively self cleaning. Easy to service also. The key to good braking is a good amount of boost assist to the master cylinder and the correct ratio of master cylinder piston surface area to caliper piston surface area. Vacuum boosters: first off make sure your engine vacuum is good. 18in+ of vacuum at idle is needed for a vacuum booster to give full power. Vacuum leaks, cam changes and many other factors can contribute to low idle vacuum. This needs to be checked before you consider a booster swap. Also test your current booster by running your engine for a few seconds with your foot off the brake. Shutoff the engine and wait a minute or so, press on the brake pedal. You should have at least one full vacuum assisted pedal push before the pedal hardens up. If it fails that test then you have a leaky booster/check valve. You can also run an electric vacuum pump for your brakes which can significantly improve the vacuum assist. Master cylinders: 15/16 is normally the best size for stock front calipers and either drum or disk rears. MC size should only increase when more fluid volume is needed (eg big brake/caliper upgrades). Running a larger MC with stock brakes will result in less fluid pressure. Bleeding brakes: Always start by bench bleeding the MC and make sure you are absolutely positive it is air-free. Don’t let the MC Tun dry at all when bleeding the rest of the system or you’ll have to start over. Vacuum and gravity bleeding have been the most effective in my experience. Speed bleeders also really help if bleeding by yourself. Brake pads and rotors: Generally speaking, proper pad break in and selection is crucial. When you first get new pads they normally have a coating that embeds into the rotor upon first use. Softer pads wear quicker and create more dust but also generally stop better. Lifetime warranty pads are generally very poor performing since the compound is extremely hard. I recommend with black magic brake pads or centric posi-quiet. Regarding rotors, drilled and slotted rotors have less contact area for the pad and therefore require more pressure to have the same braking force. They do offer many other cooling and cleaning benefits though in certain applications. Coated rotors are great to keep the rotors from rusting onto the wheel unit bearings. Rear disks: Generally they actually offer less braking than drums. Think of tractor trailers, most use drum brakes. Drums also typically have better parking/ebrakes. That being said, disk brakes are so much more convenient and still offer very good braking performance especially when wet or in muddy conditions. They cool much quicker also. Stop and go traffic, windy roads and aggressive driving all greatly benefit from disks. Prop valves: typically in a rear drum/front disk setup you need to lower the braking fluid pressure to the rear brakes since drums will lock up sooner especially with empty truck beds. Disk front and rear are generally 60/40 or even 50/50 pressure split. In other words, up your rear brake fluid pressure if you switch from drums to disks. 84-89 Dana 30’s have knuckles that can easily accept various big brake upgrades/kits. 90 and later dana 35’s can use the ZJ disk with almost zero mods. pre 90 Dana 35s have an early style Dana 44 mounting flange. They can still be upgraded to disks but it’s a bit more work. Stock they have 10” drums and no c clips. I actually like those little axles

Also, with the wheel off, try turning the rotor by hand and see if the contact with the pad is consistent.

When you removed the old rotors did you get all the rust and debris off of the unit bearing so you get a nice clean seat for the new rotor? I’d take the rotor off and compare it with the old one also.

Is this your truck? Any pics? I can’t open the link

Have an odd little vacuum sound. I run a dual diaphragm 8” booster and an electric vacuum pump that runs fairly high vacuum (24in). Recently, when I let off the brake pedal their is a vacuum suction sound that lasts for just a second then sounds like a valve closes shut. Almost sounds like something is a bit sticky in the booster and needs some oil. The booster isn’t leaking at all while breaking and works fine otherwise. Any ideas what it could be?

i believe the “heavy duty” components they are talking about is just the standard upgrades found on new ax15’s. I went through two rebuilt units before I found a good used one that worked perfectly. A new tranny can be had cheap enough that I wouldn’t get a rebuilt one. I’d go with a good used or new

I tried that on mine and it worked somewhat. Definitely not as miraculous an effect as I was hoping. Not sure if the plastic is harder than a headlight but it was tough to polish

Depends on wether your a buyer or seller

Any chance they gave you the water pump for a wrangler? They spin in the opposite direction of XJ/MJs

Very odd. Will the snap ring stay in place and not spin at all in the housing? If not, use some green loctite to fix it in place and let it cure before reinstalling

This is where your mark should align:

That speedo gear is not clocked properly. Turn it until it fits correctly. The snap ring should never interfere with the speedo gear. That’s a strange tail housing that doesn’t have a fully machined groove for the snap ring all the way around! Do you know what kit that is?