Knocking sound inside differential

[911monty]

You can pull the cover off your diff and remove and inspect the gears. Pelican has a great how to for LSD install. Just be sure to keep track of the shims you pull and re install exactly. The pic you have attached is of an LSD, yours will have the spider gears in the open diff.

[heiwaz]

Originally Posted by 911monty

You can pull the cover off your diff and remove and inspect the gears. Pelican has a great how to for LSD install. Just be sure to keep track of the shims you pull and re install exactly. The pic you have attached is of an LSD, yours will have the spider gears in the open diff.

Thanks, I have seen the DIY in pelican to install de LSD.

So, you tell boxster S has got a differential like this:




Do you think there will be some clearance in parts 2 or 7?

[911monty]

Originally Posted by heiwaz

Thanks, I have seen the DIY in pelican to install de LSD.

So, you tell boxster S has got a differential like this:




Do you think there will be some clearance in parts 2 or 7?

Yes this is an open differential and is standard issue. Parts number 2 in this diagram point to the ring gear and the pinion gear shaft. They have a clearance ~.003" or so called the lash adjustment. This is set using the spacers in the housing. While this appears excessive due to the amount of movement you are seeing, I do not think it is the source of the knocking you are hearing. My thoughts are it is more likely from something going on with the part #5 which is the carrier and differential gears. This could be repaired or maybe upgraded to an LSD. However Gilles is correct in saying whatever it is I would find before I drove any further. Good Luck

[Gilles]

Originally Posted by 911monty

You can pull the cover off your diff and remove and inspect the gears. Pelican has a great how to for LSD install. Just be sure to keep track of the shims you pull and re install exactly. The pic you have attached is of an LSD, yours will have the spider gears in the open diff.

+ 1

You should not be driving the car before you check inside the gearbox, because if something is loose inside and gets caught between the differential gears, you will have a catastrophic failure.. (not to mention the possibility of having an accident)