after market diferential parts

[TYSHO]

Hehe...with Sergio driving it...I can believe it! I'm pretty sure there's not many, if any, active members here on shoforum that can ride balls out in corners like Sergio! And to add, I don't autocross. But I'd think autocrossing many times with a stock diff, or any diff for that matter, would heat up the fluid pretty bad to maybe break it down if it's not equipped with a trans cooler. And therefor causing excessive friction to cause galling.

Edit: For whoever asked about how to solve the roll pin walking out case, simply replace it with a larger one. I believe the stock one is 4.5mm. I replaced mine with 3/16" and pretty much had to use more force to put it in. I bought three for all three roll pins in the diff...size 3/16" X 1-1/2". For .25 cents a piece, you can't beat it! I also bought a roll pin for the shift lever shaft for an extra .30 cents...3/16" X 1". There's more roll pins inside the trans like on the shift fork shafts, but I didn't fill like replacing all of them, but if you want they're like 3/16" X 1" too.

<small>[ December 13, 2003, 09:33 PM: Message edited by: TYSHO ]</small>

 

[masho95]

drivinhard:
I've seen the pinion shafts where it looked like somebody put it on a lathe and turned it down .040" where the spider gear rides. One of the worst I ever saw was from Sergio P's car, showed it to me at the '99 Convention. he's in TX, swing by his shop sometime, he's probably got it sitting in his toolbox

Personally, I would not consider the roll pins "strong". I wouldn't consider them "weak" either, but more borderline adequate.

A full fluid level (w/ fresh fluid) can protect against pinion shaft galling, but does nothing for the load against the roll pin. And correct, it's much more common for the roll pin to sheer, than it is for the pinion shaft to break (more rare like you said) but I've seen it happen a few times.

Mark not to mention my tranny's differential main pinion. TYSHO check out this picture:
http://www.mashomods.com/erik/tranny_pics/pages/worn_diff_pin_JPG.htm
It's hard to tell from the picture, but the wear on the main pinion is just as noticable by sight as it is by feel.