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Oil in gear diff?

Discussion in 'SC10 / SC10.2 / SC5M' started by AERacer, Aug 6, 2012.

  1. AERacer

    AERacer Administrator Staff Member Moderator Factory Member

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    My SC10 has a gear diff. I know it is usually filled with grease but many use regular diff oil.

    I plan to fill it with 3000wt, am I in the ball park with 3k?
     
  2. Martijn

    Martijn Well-Known Member

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    Isn't black grease better? I heard it gives you more grip?
    Googled abit and I found some run 2000 - 3000 - 5000 - 7000
    You want it to feel like a ball diff someone said..
    Go for 4000 so you are somewhere inbetween? :D
     
  3. AERacer

    AERacer Administrator Staff Member Moderator Factory Member

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    as my diff is at this moment, it feels like 1000wt. It is super smooth but unloads pretty easily :)
     
  4. chad johnson

    chad johnson Active Member

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    I just went from a grease to 4000 and ots not alot different alot more mess when u rebuild
     
  5. Martijn

    Martijn Well-Known Member

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    Why don't you put a ball diff in your sc10? :D
     
  6. chad johnson

    chad johnson Active Member

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    Yea im planning on it got 2 more gear diffs to burn out. Yet
     
  7. Martijn

    Martijn Well-Known Member

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    That's why I don't like the gear diffs, friend of me broke 2 of them in 2 weeks or so...
    Nog he has a ball diff and it's still going
     
  8. chad johnson

    chad johnson Active Member

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    Yea just gotta use the parts i got. First
     
  9. AERacer

    AERacer Administrator Staff Member Moderator Factory Member

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    I now have a grinding sound in my SC10 diff since I installed my 7.5T motor... :)

    I stopped running it as soon as I heard the sound and I'll have shims behind the sun gears. It is a common issue with gear diff.

    But yes, ball diffs are better but require a little more maintenance.
     
  10. Martijn

    Martijn Well-Known Member

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    Yes true, but still it lasts long.. At least mine does..
     
  11. chad johnson

    chad johnson Active Member

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    If u build them right they last forever
     
  12. LeeSc10

    LeeSc10 Well-Known Member

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    I want to order a ball diff too. :D
     
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  13. chad johnson

    chad johnson Active Member

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    Yea me to
     
  14. tmail61

    tmail61 Well-Known Member Factory Member

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    Ball diff won't fit a gear diff tran, different case and outer bearings.

    Maybe cheaper to get a tran off ebay.
     
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  15. LeeSc10

    LeeSc10 Well-Known Member

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    Good to know. Thanks Terrance
     
  16. Martijn

    Martijn Well-Known Member

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    If your running the gear diff and you want to switch to the ball diff, run the ball diff from the b4.1 of factoryteam sc10?
     
  17. tmail61

    tmail61 Well-Known Member Factory Member

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    BETTER diff info. :D

    B4/T4 (only offered ball diff)
    Case - 9574
    Plate - 9570
    Outdrive - 7668 & 7667
    Bearing - 3976 (3/8 x 5/8)

    SC10/B4.1/T4.1 (both gear and ball diff)
    Case - 9826
    Plate - 9818
    Outdrive - 9852
    Bearing - 9832 (10 x 16mm)

    The above shows a kinda hidden change between the 4 series and the 4.1 series diff!

    As I built my SC10 from a T4FT I have the ball diff only trans.
     
  18. Martijn

    Martijn Well-Known Member

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    He said he is running the gear diff now so he needs the B4.1/T4.1 ball diff.

    I think there are 2 generations of SC10??
     
  19. tmail61

    tmail61 Well-Known Member Factory Member

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    The SC10 seems to be where the start of the diff changes begins.
     
  20. AERacer

    AERacer Administrator Staff Member Moderator Factory Member

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    If I am right..

    Gear diffs (which also means metric outdrives bearings) were introduced with the SC10 RTR.

    The T4.1 and B4.1 RTRs also use the gear diff while the FT kits uses ball diff.

    Older B4 and T4 RTRs were using ball diff.

    I have a 1st gen SC10 RTR and it uses gear diff.
     
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