95 WRX transmission noise

[Baddog]

Hello there,
Looking to see what this problem could be. Not sure if it is the center diff or I stretched first gear.

The car is a 95 Impreza L with an EJ205 swap and a 95 JDM WRX transmission. Took the car to the drags on Friday night. 2nd run I broke a few teeth off the spider gear in the rear differential. Replaced the differential with a known good one (also a 4.11).

Been driving the car and having this whining noise now on deceleration. Also when accelerating in first gear sometimes I hear what almost sounds like a rock tumbler for a second or so at low RPM's. Goes away at higher RPMs.

The noises are not apparent in any gear other then first.

https://www.youtube.com/watch?v=AyqCnRQ ... e=youtu.be

https://www.youtube.com/watch?v=ZzpAms7 ... e=youtu.be

[Legacy777]

Did you swap the entire rear differential or just the gearing into the existing housing? If the latter did you check gear back lash?

[Baddog]

I swapped the full rear differential. Didn't swap over any guts.

[Pntaste4evr99]

My first gear kinda sounds the same....but only when cold?? Weird

[Pntaste4evr99]

Have u blow through clutches constantly launching like that in your drag videos?

[Baddog]

Clutch only has about 1k miles on it. So nope haven't blown through one yet.