Hello H-ters!

I had my DC2R gearbox rebuild about 3-4 months ago due to a 3rd gear crunch, all the bearings including the diff and seals along with a 3-4 synchro was replaced with OEM honda parts.

Now after installing the gearbox back in the car it had a knock everytime i accelerated so I ended up replacing the rear mount and replaced both of the drievshafts with OEM driveshafts.

The knock did not get better...

So we put it on a hoist today and found this (see video link below)..... the RHS shaft is moving a fair bit everytime I accelerate and hitting the gearbox housing... The sideways movement is caused by how the helical gears mesh, the forces on them push them apart....

Has anyone experienced anything like this? Seems to me either the diff bearings are fkd or they forgot to put the shims back on the diff...

I'll be taking it back to the shop that did the gearbox but wanted to know if anyone else has experienced something similar.

Thanks!!

 

Updates on the issue...

Removed half shaft, moved the RHS innver CV in and out by hand, very noticeable freeplay in the diff.

Suspect wrong bearings were used.

Shop has agreed to fix it.

 

They probably used b16/LS diff bearing which would allow an extra 3mm or about 1/8 inch movement. This would also suggest they did not check and adjust the diff shim as needed.

 

They didn't shim the diff. Spec is .000" - .004".