1974 FJ40 rear diff lock - Eaton E-Locker C-clip (1 Viewer)

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BlueMarblePA

BlueMarblePA

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I am looking for a rear differential locker for my FJ40. I am looking at the new Eaton E-Locker, but the catalog 14212-1 has a hatch mark which says, "only fits imported non C-clip axle design". If I have a USA spec vehicle, can I install this E-locker?

If I have a C-Clip, my only option from Eaton is the Detroit Locker. 187152A


Are there any Torsen slip differentials that could be retrofit into the rear differential of my FJ40? Filthy Motorsports speaks highly of the Torsen.
 
You have a semi float rear end, the E locker appears to be for a full float style diff like your frt end. I've witnessed the locking issue he describeds with the Elocker. For that reason i wouldn't own one. I want a locker to engage instantly and stay engaged. I run an ARB in the frt, Detroit in the rear. The video seems pretty accurate in his descriptions. I 1st started with a lunch box locker. It was cheap, noisey, and altered the driving characteristics, but it was effective. Then I went to real Detroit Locker, it rarely makes a noise, and drives fine. It's much more refined. My 2nd 40 will likely get an ARB in the rear, or maybe a Detroit.
 
Can you advise me as to which lsd? I noticed that the eaton Detroit locker (not quite a lsd) does not fit. I will look at Auburn. Is this the only option besides lunch box?
 
If your willing to buy a lsd, Detroit or arb type carrier, i wouldn't waste my time with a lunch box locker. I prefer a selectable locker in the frt.
 
Mark Jennings said:
The only option for a full float is a ratcheting (lunch box) or an Auburn limited slip. Generally the best setups are limited slip rear, locker front.
Click to expand...
Sure you meant semi floating rear axle. Full floater work with most lockers. OEM cable and E-lockers require a special long splines inner axle one side. On the rear is the right side. On the 40/60/70 series that was NLA. Believe it was a part on Heritage Program which isn't available in the US. Using a third party to get one gets very costly. This is on OEM lockers and does not apply to aftermarket lockers to my knowledge.
 
Guys I’ve had a PowerTrax No-Slip in the rear of my 40 for years and it’s been a great “lunch box” solution. It’s got a second set of springs that eliminate the ratcheting sound in corners, so it’s smooth and quiet. I get the occasional pop which is very infrequent, say every couple of months. Off-road it’s everything you need when you need it. In my opinion it’s the best bang for the buck for a real traction upgrade without going all in for a top line solution.

No-Slip Traction System - PowerTrax

www.powertrax.com www.powertrax.com
 
Living in the Past said:
Sure you meant semi floating rear axle. Full floater work with most lockers. OEM cable and E-lockers require a special long splines inner axle one side. On the rear is the right side. On the 40/60/70 series that was NLA. Believe it was a part on Heritage Program which isn't available in the US. Using a third party to get one gets very costly. This is on OEM lockers and does not apply to aftermarket lockers to my knowledge.
Click to expand...
I did, you are correct, semi floater.
 
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