CanMan said:Setting up used gears can be a PITA, but it can be done.
CanMan said:Id suggest not to just take the gears. Setting up used gears can be a PITA, but it can be done. Id just take the whole axle and bolt it in, that way, there is no messing with gears.
DBenz said:Can we get a little more elaborate on why putting used gears in other axles is difficult? I've read that they can settle to one axle and what not, but....wouldn't they settle to the new carrier after time and quiet down?
old_man said:The reason has to do with basic metalurgy. As gears wear together, the high spots get worn down and everything just kind of fits together better. The problem is that in this wear down and breakin period progresses, the surfaces work harden. When you get done, the surface of the gears is much harder than it was when they were new. If you re-set up gears, you never get them exactly to where they were before, so you are meshing only on the high points. The problem is that the high points are now much harder steel and do not break in the same way that they did when they were new.
I have set up and run several sets of used gears in the past. I've never really had a failure with them but they tend to be a lot more noisy and bug people who ride with you.
CanMan said:Its a howling type noise. Some can sound more metallic. Kind of like a power steering pump going bad. It can also sound like a set of TSL's or Boggers humming down the road. Can be on just acceleration or just on deceleration. It can be on both. It can vary in speeds ranging from take off, to freeway speeds. Sometimes it can be just herd from 35 to 45 mph. Sometimes at 40 mph on coast. Other times the noise can occur a freeway speeds. Rare, but might happen when the gears are cold or hot from a long drive. Each situation is different.
You could buy new gears when installing a new full case locker. The pinion will stay the same, all you would have to do is adresse the carrier shims, and possibly the pinion shims, depending on the readout you get.
I have a whine in the 8.25 on deceleration, but I live with it. To each his own I suppose.
When you remove a carrier you only have to recheck backlash.Pinion depth does not change(which is the set-up).falcon556 said:If you replace the original differential with a locker/LSD you will disturb the original setup.
Would you say that when going to a locker you also have to replace the ring and pinion?
Unless you enjoy the noise?
BTW how would you discribe the noise and at what speeds?
StylerG said:is there a set of junkyard axles that are direct replacements that come with 4.10 gears?
cal said:Yes, if you pull axles from an older 4 cyl cherokee.. but you will end up with a dana 35 rear end, so its not the most popular swap.