Hello, I have just gotten my exhaust installed on my 510 wagon with 280zx 5-speed. Driving it back from the shop now that it is a lot more quiet I noticed when engine braking especially in 4th/5th there is a sort of whine/chatter from the gearbox, if I apply power/freeway cruising it feels and sounds fine.
I'm curious what is wrong, currently I have no carpet and the shift hole is just a bit cut hole in the tunnel (I can see the ground/driveshaft while driving (rofl) so I can hear it more clearly Is it a normal noise?
I also found out that I installed the throw out bearing backwards, and I need to pull the engine to fix that soon. Could that be causing this noise?
Transmission is used with new fluid, clutch is new, flywheel is new, flywheel bolts are NEW nissan OEM w/ blue threadlocker, t/o bearing is new(but installed wrong), slave/master cyl and soft line are new, rebuilt engine/all of that is new.
Bolts where all torqued to spec ... Could have come loose Maybe?! It sounds like its in the trans, though.
Sounds like it comes from the transmission, but the diff oil is old and diff case is wet. I'm changing that out this weekend, could it cause this?
Have been searching this but have not found a good answer.
Thanks.