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Why won't selectable locker work in D44A/HD diff?

Why won't selectable locker work in D44A/HD diff?

Old 12-13-2018, 08:45 PM
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Question Why won't selectable locker work in D44A/HD diff?

So the only lockers I am aware of that are available for the Dana 44A/HD differential are lunchbox and limited slip varieties. My question is: Is this because the locker manufacturers only make these type lockers, or is there a technical reason why a selectable, i.e., air, electric, or cable, locker will not function in the D44A/HD differential? If there is a technical reason, can you explain what it is?

I'm rather tired of hearing "That they don't make one" and would like to know if there is a more expansive reason as to why not.

Thanks.

There is the Eaton E-Locker for a D44 30 Spline 3.73 Down that I wish could be installed, but oh well

Update: ARB makes the RD226 Air Locker Locking Differential for 93-10 Jeep Grand Cherokee with 30 Spline Rear Dana 44A Seems I may be going ARB front and rear111

Last edited by Shire_Man; 12-14-2018 at 01:23 AM. Reason: Update rd226
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Old 12-14-2018, 05:41 AM
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Just throw a lunchbox locker in and be done with it.
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Old 12-14-2018, 10:18 AM
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Outside of the market factors such as supply and demand, yes there is. The aluminum center section is the reason. The center section is strong enough, it is that the tubes are pressed in and not plug welded. When you use a selectable locker, the axles effectively become a spool rear end when locked. This puts tremendous forces on the axle shafts, and also on the tubes. It is becoming more common for instance on JKs to actually stretch the front tubes and break them on the front D44 with the D30 tubes and outer parts. Seems crazy, but it happens. This rear end is a good street rear end but not for selectable lockers
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Old 12-15-2018, 11:49 PM
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Originally Posted by 4.3L XJ View Post
Outside of the market factors such as supply and demand, yes there is. The aluminum center section is the reason. The center section is strong enough, it is that the tubes are pressed in and not plug welded. When you use a selectable locker, the axles effectively become a spool rear end when locked. This puts tremendous forces on the axle shafts, and also on the tubes. It is becoming more common for instance on JKs to actually stretch the front tubes and break them on the front D44 with the D30 tubes and outer parts. Seems crazy, but it happens. This rear end is a good street rear end but not for selectable lockers
Thanks! Most complete answer I've ever gotten. I'm going to go with the ARB locker I learned about anyway. Since I plan to also have a truss added the problems you talk about should be mitigated, if not eliminated, at least I hope so. Won't happen real soon though, financing this build is going to be a long term endeavor! Just Emptying Every Pocket ;<))
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