First Arrma Differential Service

[benny514]

Hi all, just a couple of newbie questions here about the notorious but probably applies some what to all the 2019 v4 range, i’m going to be changing the diff oils soon, is there any tips or tricks i should know before hand, also i was thinking about running a 30k/125k/30k setup, how different will it be if anything?

 

[Warby]

Its personal preference but refer to this for tuning diffs

Myself I'd go 500k centre to reduce front tyre ballooning.

From memory I'm running 60/500/30 (F/C/R) in my Kraton.

 

[pa_fullsend]

Go with 500k center. I run what @Warby said. Also some tips.. take it apart slowly so you remember how it goes. Clean it up well and put back together, don’t forget to put the bearing on before closing it all up haha. Been there and it’s annoying. Also upgrade to nice fast eddy bearings while you’re at it. Fill the cup about 80% of the way and let it settle for a while before slowly working the gears to get it all around. Make sure you have enough in there and let it sit some more to release any air. Then seal er up ??

 

[jkflow]

+1 on forgetting the bearings
Get a diff refurb set and a 3 pack of seals. Just in case anything gets lost or rips. Seals are ok to reuse but a tiny tear and you regret it later. The tiny o-rings get lost easily. 500k or higher in center is my recommendation as well. Running 50/500/50 myself, couldn't tell the difference running 30rear/500/50 and cuts down on inventory. 500k is hard to find, 1M works as well. Buy shims and watch some vids as well.

 

[benny514]

Bump...

What would 80k/500k/35k be like?
I’m running 50k/500k/50k atm and cant really fault it, probably because i haven’t used any other setup besides the stock oils it comes with. Also when refilling the diff cups how much is to much, thanks in advance guys ??

 

[nino]

Dissenting opinion time! I fill them up completely and let the extra bleed out (there's a grub screw for that) as I rotate the gears once it's closed.

I also find 100k cSt thick enough in the center diff. Maybe because I fill em up all the way. ?‍

 

[Outcastblxnut]

I run 100/500/60 in my outcast. 60/500/30 in my talion

 

[benny514]

hey guys, do you think these diff gear teeth that are slightly worn/missing will cause me problems (first 3 pics are of the front diff, the next pic is of the centre diff/spur gear)

 

[jondilly1974]

hey guys, do you think these diff gear teeth that are slightly worn/missing will cause me problems (first 3 pics are of the front diff, the next pic is of the centre diff/spur gear)
View attachment 79235View attachment 79236View attachment 79237View attachment 79238

That circled chipped tooth, I would replace that one. The others look ok from the pics.