Fj40 Diff On A Fj62

Discussion in '60-Series Wagons' started by ALEXGAR, Aug 6, 2005.

  1. ALEXGAR

    ALEXGAR

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    Anyone know if I can swap a 4.11 fj40 diff into my fj62 diff (4.11) ???

    My 62 began to make a constant grinding noise as the vehicle moves forward or backward and I'm thinking the pinion bearings are gone.

    Any help is appreciated.
     
  2. dd113

    dd113

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    No problem. You have fine spline vs coarse spline (FJ40) but that wont effect it working it just wont be as strong. The flanges are diffferent so you will wna tto swap the 62 flange for the 40 flange.
     
  3. TOY350

    TOY350 #1 Super Guy SILVER Star

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    The older FJ40 diffs have smaller holes all the way around the carrier housing, it will still work you just have to hog out the holes. I am not sure on the year that they were smaller but I am guessing mid 60's and older. Most 40 carriers will work fine, I haven't seen too many of the older ones.
     
  4. svo_jon

    svo_jon

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    Are the axle shaft splines the same?
    Thanks
     
  5. TOY350

    TOY350 #1 Super Guy SILVER Star

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    I do believe so.
     
  6. cruiseroutfit

    cruiseroutfit Supporting Vendor Moderator

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    Yes, as long as it is from a 68' and later axle, earlier ones are 10 spline rather than the later 30 spline...

    The bolt holes are smaller on the 67' and earlier axles... (8mm versus 10mm)

    Flange pattern will be different, and you can only swap the flanges if the FJ40 has a fine spline pinion (79'ish and later & aftermarket).

    :D
     
  7. nuclearlemon

    nuclearlemon not an addict Moderator

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    if it's course spline, get the slip shaft from the 40 driveshaft and swap that into the 62. then the flange isn't an issue.
     
  8. FJ60_cruiser

    FJ60_cruiser

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    why do you think your pinion bearings are gone? i have the same noise as you and i was wondering what could it be? :frown: now i'm worried

    what's the price for pinion bearings?

    sorry for using your thread to ask about my problem :whoops:
     
  9. cruiseroutfit

    cruiseroutfit Supporting Vendor Moderator

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    Pretty cheap (~$50 for both) or $110 for all the bearings, seal and shims...

    But to do BOTH pinion bearings, it requires the differential case to be pulled, and the gears will need to be setup by a pro. So it does get a bit expensive if you can't do the R&P setup.
     
  10. dieselcruiserhead

    dieselcruiserhead

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    Rumor has it it's '65 and eariler last I heard ;)
     
  11. cruiseroutfit

    cruiseroutfit Supporting Vendor Moderator

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    Sure? I thought it was 67' and later... SOR agrees. I am pretty sure I have parted out some 66-67ish axles that were the small studs?
     
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