Yeah, there is no likelihood that Jeep had over 3/4's of a million LP 30's laying around. The reason they used the LP 30 is probably because there was no need to use anything else. There is exactly zero wrong with it, it works very well for the vast majority of folks and were it not for the internet telling folks they needed one, very few would actually swap in a HP 30.
There are a small handful of folks that have a use for the HP 30 and only because it moves the driveshaft up higher. Other than that, it isn't really worth it. The gear set isn't robust enough for wheel spin wheeling in muddy rocks and we don't break the LP gear sets in the rocks so there is no advantage to the HP except saving the front driveshaft. The LP gear set is quite capable of breaking even alloys shafts and u-joints without damage to the gears so anything posted as a reason to swap one in outside of the higher driveshaft is like most things, just believing what you've read without actually solving a problem you really had.
One should also be aware that there are some HP disco housings that are not machined for the inner seal at the diff on the long side.I'll just leave this here:
One should also be aware that there are some HP disco housings that are not machined for the inner seal at the diff on the long side.
What is that seal?This is why I do not recommend the disco housings not worth the lottery. If you do end up with one you can use a National 40576S seal in there.
Old Spicer 25-27 axle tube seal. They suck to install but get the job done.What is that seal?
Pics look like it goes in from the knuckle side, is that correct?This is why I do not recommend the disco housings not worth the lottery. If you do end up with one you can use a National 40576S seal in there.
I'm getting more cranky about everyone recommending the HP30 day by day. Where they once used to be plentiful, easy to get, and cheap enough to be considered a throwaway housing as in if you tear it up, throw it away and go get another one. Now, they are scarce, more scarce by the day and with all things that get scarce, the price has jumped up. Where they used to be 75-150 bucks, now the going rate for one is 5-600 bucks. That's bullshit because that moves them up into real axle territory and no longer a viable option.I'll just leave this here:
I'm getting more cranky about everyone recommending the HP30 day by day. Where they once used to be plentiful, easy to get, and cheap enough to be considered a throwaway housing as in if you tear it up, throw it away and go get another one. Now, they are scarce, more scarce by the day and with all things that get scarce, the price has jumped up. Where they used to be 75-150 bucks, now the going rate for one is 5-600 bucks. That's bullshit because that moves them up into real axle territory and no longer a viable option.
Pics look like it goes in from the knuckle side, is that correct?