1974 FJ40 rear diff lock - Eaton E-Locker C-clip (13 Viewers)

[BlueMarblePA]

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

https://www.eaton.com/content/dam/eaton/products/differentials-traction-control/eaton-performance-differential-application-guide-en.pdf

Are there any Torsen slip differentials that could be retrofit into the rear differential of my FJ40? Filthy Motorsports speaks highly of the Torsen.

 

[pb4ugo]

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.

 

[Mark Jennings]

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.

 

[BlueMarblePA]

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?

 

[pb4ugo]

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.

 

[Living in the Past]

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.

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.

 

[77mustard40]

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

 

[charliemeyer007]

Powertrax needs to update their website.

 

[Mark Jennings]

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.

I did, you are correct, semi floater.

 

[Mark Jennings]

Auburn…..

Auburn Gear Inc 546030 Auburn Gear Grip-N-Loc Differentials | Summit Racing

Free Shipping - Auburn Gear Grip-N-Loc Differentials with qualifying orders of $109. Shop Differential Carriers at Summit Racing.

www.summitracing.com

 

[BlueMarblePA]

Auburn…..

Auburn Gear Inc 546030 Auburn Gear Grip-N-Loc Differentials | Summit Racing

Free Shipping - Auburn Gear Grip-N-Loc Differentials with qualifying orders of $109. Shop Differential Carriers at Summit Racing.

www.summitracing.com

Thank you for this link

 

[-MaTTi-]

Are there any Torsen slip differentials that could be retrofit into the rear differential of my FJ40?

I don’t know about this: Toyota LandCruiser 80 Series TorqueWorm Helical Gear Limited Slip Differential - https://www.speedmaster79.com/TOYOTA-LandCruiser-80-Series-TorqueWorm-Helical-Gear-Limited-Slip-Differential

Description says:

Application:
1990-1997 Toyota Landcruiser HDJ80/81
1990-1997 Toyota Landcruiser HZJ80/81
1993-1997 Toyota Landcruiser FZJ80/81
1990-1992 Toyota Landcruiser FJ80
1984-1998 Toyota Landcruiser BJ/HJ70 & BJ/HJ75
1969-1983 Toyota Landcruiser FJ/BJ40 & FJ/HJ45
1968-1979 Toyota Landcruiser FJ55
1981-1987 Toyota Landcruiser FJ60/61 BJ60 HJ60/61
1988-1990 Toyota Landcruiser FJ62

But could this fit this large range? C-clip needs always different version, I think.

 

[Living in the Past]

But could this fit this large range? C-clip needs always different version, I think.

I noticed the word Torsen is not used. Toyota been installing Torsen into transfer cases for over twenty years.

Very seriously doubt this will work with C clips. I have an early Land Cruiser that had Torsen in the diffs front and back. When a pinion bearing in the back diff went bad I almost tried to take it apart to get the C clips out. If I did would most likely never got it together again. Plus would not have found any C clips. The axle special plates on the end to hold press on bearing in place. Unbolted the plate and the inner axle came out. Not sure why these would work in front axle of the FJ40 and full floater in the back.