996/997 GT3 Diff Rebuild: Anyone Done it?

[GentlePersuasion]

Hi Folks,

It seems fairly clear now that the diff plates on these cars are made from chocolate; finest 70% coco variety I'm sure, but chocolate all the same. The method to test for a worn out diff appears to be inconclusive, but despite this, I am concerned that there's little or no assistance from my diff when coming out of light speed. I'm still getting lockup out of the corners, but the diff is far from aggressive in any way and the car is very nervous under hard braking (despite a recent geo set-up at JAZ).

Conclusion: the diff's fked.

Now, where do I get it sorted (I'm London based)? Anyone got experience of this? The car's still under warranty (although my friendly OPC has since drawn a blank on any notion of an FoC rebuild), so on that basis, I'd rather have the standard LSD rebuilt with stronger internals than do anything too drastic.

I've heard that the 'Cup' internals are the way to go? Thoughts?

[GentlePersuasion]

sleep envy said:

thegoose said:

If it's under Porsche warranty then its down to them to sort it out.

To replace a consumable part?

Indeed. It was worth asking, but alas, the diff packs are covered under the same umbrella as brakes and clutches; i.e. "Go forth and multiply. Sir".

Edited by GentlePersuasion on Tuesday 12th February 12:23

[GentlePersuasion]

gt3nor said:

Rebuild mine myself last year with Guard internals (Guard Transmission).
It's not hard to do, but if you want it done 100% correct you have to take a measurement first to get plates with a perfect fit as the stack height is slightly different for each differential. I recommend you check out the LSD Buster thread on 6speedonline and/or contact Matt at Guards to get all the info you need for this.

Thanks,

I've read about the Guard diff. Any idea on prices vs the Porsche Motorsport stuff?