So after numerous rebuilds ( messing with the backlash, putting used gears, putting another set of new frpp gears), noise is still there. I will post pics of the the original gears i bought from AM (hopefully tomorrow). the pattern seems fine but a second opinions is welcome. At this point i am thinking it could the bearings. when i bought the bearing kit i forgot to buy the AM specified inner bearing. I asked the shop to supply it for me. I double checked with them if they knew about the inner bearing change from 09 to 10+ models and the owner was aware of it. The inner bearing they used is a timken m802048.
Again the noise is very faint, i can barely hear it on accel (mostly due to loud exhaust),decel (50-0) and coast(especially around 50-65).
Do you have a manual?
2012 v6 6MT: 32kmiles
Current: Air Raid CAI, Diablosport intune, FRPP sport axle backs, Strut tower brace, 3.7 emblems, eibach adjustable sway bars, J&M lower control arms, 3.55 frpp gears, axle exchange aluminum drive shaft, 19 inch BBP wheel set up
wants:no more issues
2002 mazda miata 5MT "track rat
Future" Custom valved and springs Fat cat motorsports, 9LB wheels, toyo proxxs r888, turbo pushing 250whp, sparco seats, custom roll bar