Help with choosing posi setup

Can someone offer me the advantages and disadvantages of these two posi units?

the Power Trax and the Power lock.

 

Powerlok = bulletproof
Power Trax = ?
Actually I thought Power Trax was a manufacturer not a specific unit. I think they make a limited slip though.

 

Pluses.
Lock Right: Full ratcheting locker, no setup charge since you can install it yourself without having to remove the differential carrier, and no limited slip additive.
Power Lok: Fully user tunable from as open as a stock carrier to as locked as a spool, user rebuildable with replacement clutches, stronger than a stock carrier.

Minuses.
Lock Right: Uses the stock carrier, can have rough engagement/disengagement action, makes clicking noises when going ‘round turns, uses stock carrier, can have sketchy engagement once worn (or so I’ve heard), uses stock carrier.
Power Lok: It’s a limited slip not a full locker and unless tuned for more aggressive engagement it can require some wheel spin to get it to engage, uses limited slip additive, requires set up ‘cause your ring gear will bolt directly to it replace’n the stock carrier.

I have Power Loks front and rear and absolutely love’em.
But, if you’re look’n at Lock Rights, have a look at Aussie Locker before you buy. The guys over at JU rave ‘bout’em.

 

Powertrax (lockrite0 are a pain in the @$$ to install because of the small springs you have to put in with a dental pick after it is installed in the differential. In the old Willys Pickups and some wagons they came from the factory with powerlock's. My pickup has one and it still works like a charm. Good luck

PS if you want even better performance go with a detroit true track

 

Good review of available units at Randy's R&P: http://www.ringpinion.com/content/technicalhelp/default.asp?pid=128

 

I put a PowerTrax in my D44 Thursday after coming home from work. Got done about 8:00 pm. My axle had a 4.27 set of gears and with this ratio you have to remove the carrier because the cross shaft is behind the ring gear. So getting the cross shaft our requires you to remove the ring gear. Another big help was having a Warn full float which saved a bunch of time pulling axles/brakes/tires.

Putting the actual PowerTrax in wasn't that much of a problem. Make sure you use a new cross shaft retaining pin.

My first impression of driving it was that all this wratcheting/banging/clunking stuff was overblown. My test drive was through a park not far from here with a lot of switch back curves. Yes you can hear it locking and unlocking - it isn't silent - but you have to be listening for it. I also changed to Mobil 1 75w-90 synthetic axle lube. Figured the thinner lube should help the clutches engage & disengage.

Haven't had it in the mud or off road yet for a test. Can't speak to the durabiity. But someone here made the comment that these things were pretty hard to tear up with a 4 cylinder, so I went with that. For my use - mud, wet grass, sand - it should work fine. Plan on putting a LockRite in the front later on.

 

I have lockrights in both axles, not true about the install. You might have to pull the carrier out to install(spider gear cross pin hits ring gear, but it requires no ring and pinion setup and can be done by most jeep owners in about 3hrs or so. Road manners are good but I can feel when the rear lockright unloads, noise is minimal at best 140W oil quiets them down(can't hear them over the whine of the F head and D18). Of course off road traction is great. Oh yeah cheaper to buy and install!!!

 

My only personal experience with’em is in my uncles Chevelle and that one is live’n in a 10 bolt with, my estimation here, ‘round 400 lb/ft of torque (396 ci big block with mild cam and dual Edlebrock 600 cfm carbs).
In this application it does click and bang particularly if you get on it mid turn, you need to make sure you go’n straight so that the locker is fully engaged before romp’n on it.
But this is a weekend cruiser/dragster and not a lifted Jeep with slinky suspension, so I don’t want to lead anyone to assumptions as to how it will effect the way their rig will handle here.