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- #21
Going today to pick up some 4Runner shafts. I’ll post the lengths tomorrow
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I have a few pictures of the cable locking diff I retrofitted/installed in the front/rear ff axles of my BJ42 build thread. The clutch needs the extra length of splines cut to allow disengage. The inner axle itself is the same length regardless of the end being long splined vs. standard spline cut. I thought I read this modification for a mini truck requires a notch to be cut in the axle housing for the clutch to engage and disengage.
At least for the 60-series and maybe the 70-series, the inner axles were different only in spline machining for cable/e- lockers. You can run a long splined or short splined inner axle in a factory non-locking diff but that’s not the case for an e-locked/cable-locked diff. You’d never be able to disengage from the locked position.
So to play devils advocate here,
What are 79-85 and 90+ rigs supposed to do about the axle being too short?
I mean if its a problem in one, its a problem in all.
What am i supposed to do about my t100 shafts?
Ok, so I measured my spare shafts the way Toyotaboy80 did and got 28 1/16 just as you said. Looking at my shaft, you can clearly see how much spline contact is normally used (1 1/4”)
So are we only talking 1/4” less spline contact??? I’m over here sweating thinking that they are only in the carrier 1/2” or something crazy like that. I’m fine with an inch of spline contact vs 1 1/4” if that’s the case... only rockin 33s... might put this on the back burner though in case I come across a set...
Also, just to beat a dead horse, you only need to upgrade the locker (drivers) side) to longer which will put you back at 1 1/4” spline contact vs the reduced 1”???
On the Tacoma E-locker the locking-unlocking collar doesn't move on the axle spline. The locking collar moves in and out independently of the shaft.
Yes, the locker side is what i'm talking about. If you look at the picture i posted above it is the locker side. you can see the axle splines did not go into the meat of the carrier. 1/4" more splines would have transferred force into the center of the carrier and maybe not have broken the necked down part off. The axles will hold up to the locker but you want as much spline engagement into the meat of the carrierAhhhhh! This whole time I’m thinking that you’re loosing spline contact on the locker side but what I’m understanding now is that since you are adding a locker, the OE 1 1/4” spline contact on these years “might not” be up to par with handling the added stress of a locker. Not sure if it was just me but that was definitely not made clear this entire time. The longer shafts is just an added bonus to ensure no issues which may or may not have been caused by lack of full spline contact. This is all making incredibly good sense now. Thanks for talking me off the ledge lol