Originally Posted by
masher81
I have tried shimming the diff both ways and with out shims. It doesn't feel to tight. Actually right now the backlash feels pretty good. Its just noisy and notchy at low speeds. If i spin it fast it feels smooth but slowly turning it it feels notchy and even "catches" sometimes. I am going to make a video of it tonight. I actually think its ok and just needs run in. It just not quite as smooth as other cars I have built.
Most guys (including me) have build their cars with 1 shim on the opposite of the ringgear and 1 on the outside of the gearbox where the pinion is. I heard that in the update kits, there's no shim needed for the pinion. But I'm not 100% sure of that.
If you have backslash in some places and a little binding in some places, just run the car. Everything will free up after a few runs
