Final Drive Bolt Does Fit!

[Marphie21]

*typo It DOESNT fit

So the Kaaz 2 way I ordered finally arrive and everything was going well until we tried to fit the final drive onto the new LSD.

The Final Drive bolts are too big!

I ordered a Kaaz for an OEM viscous set up, which should have bolted right in.

Any idea why the bolts on my current LSD are a bit bigger? The final drive has 48:11 etched into it. Could my current final drive and differential set be from some weird car?

[Marphie21]

After some determined googling, there ARE 2 different bolt sizes for the ring gear.

The shop and I are discussing whether or not to machine an extra set of bolt holes into the ring gear for the smaller 12mm ring bolts.

[RalliartRsX]

Just buy the correct bolt sizes

[Marphie21]

Its a bit more complicated than that. The holes on the LSD are smaller than the holes of the threaded part inside the ring gear.

We found a solution that might help other people here: machine the holes on the LSD to fit the bigger (13mm?) bolt.

If ever i want to swap to a ring gear that uses the smaller (12mm?) Bolt, one can purchase a set of nismo s15 helical differential ring gear bolts (13mm shank, 12mm threaded portion)