Diff Rebuild

[Matt Pocknell]

Ive just bought and installed two diff re-build kits onto my TC3 diffs, and after tightening them to what the instructions says (1/2 turn from tight) they are still quite stiff. Will they "free-up" as I start using them again?
Any help please

[Andrew_Carter]

hey

yes they will. mine were tite ran i first built my ft! a ti 12x2 soon ran them in ;D

Andrew

[Matt Pocknell]

Thanks andrew, im racing stock tomorrow so they should start to free up

[webba]

When i bought the diff rebuild kit, i noticed that the diff rings supplied had no 'flat' edge in the centre hold compared to the stock ones that sit on the ridge of the outdrive. Does this make a difference?

[Joost van Leeuwen]

You probable bought the diff rings for the old steel diff.

The first diff available for the TC3 was a heavy steel diff with a slightly different construction.
The newer light-weight diff requires D-ring style rings.

This is the steel diff:

http://www2.gpmd.com/image/a/ascc3918.jpg

And the lightweight diff:

http://www2.gpmd.com/image/a/ascc3913.jpg

f.w.i.w. the Steel diff is about 30 grams, the plastic is 15 grams.

[Colin Williams]

When i bought the diff rebuild kit, i noticed that the diff rings supplied had no 'flat' edge in the centre hold compared to the stock ones that sit on the ridge of the outdrive. Does this make a difference?


I don't think you'll find it makes any difference.

[simon_racer]

I have the steel diff. What parts to I buy to change to the lightweight one? Is it just the outdrives? Or do I need the diff rebuild kit as well?

[Matt Pocknell]

I think you just need the outdrives. I could be wrong though. ;D

[Matt Pocknell]

I ended up loosening the diffs up some more as they were way to tight. The are both now 1 full turn from full tightness and work a lot better. ;)

[Joost van Leeuwen]

I ended up loosening the diffs up some more as they were way to tight. The are both now 1 full turn from full tightness and work a lot better. ;)


Full tightness as "fully compressed spring" or "fully compressed spring and plastic outdrive".
Half a turn is enough but it is hard te feel when the spring is fully compressed as the plastic diff has some give in it.

[Joost van Leeuwen]

I have the steel diff. What parts to I buy to change to the lightweight one? Is it just the outdrives? Or do I need the diff rebuild kit as well?


The plastic diff uses bushings instead of bearings and D-style rings instead of round ones. There may be more differences.
I'd buy new diffs and keep the steel ones as spares.
If you really want to know I could check the manuals (got the old and the new one) for part numbers. In that cause send me a PM.

[nicholas mitchell]

i have used both the metal and plastic diffs, the metal ones are definitely not as good as the plastic ones. i swapped them over in my tc3 and it went much better witht he plastic ones. they're newer and a bit better design me finks.
and lighter :D
nick