Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Solved: CD009 trans on SR20DET

canadians14sr20det · 06-15-2016, 11:24 AM

So it's been a month now with the 350z box. I've taken it out, bashed the ever living hell out of the tunnel and ensured I have at least 1-2 inches of clearance around the box.

Still have the vibration. Gonna loose my mind.

I spent a lot of time revving the motor (neighbours hate me) trying to figure out if its doing it only under load. I've found:

1) Vibration occurs if clutch is disengaged or engaged in neutral.
2) Vibration is worse under load.

I'm now wondering if it is either bad motor mounts, bad harmonic damper, or a bad clutch.

I have an exedy hyper single and I called exedy to ask if they can go out of balance, tech said it is unlikely and they are balanced to 15,000 RPM.

So is there a chance this could be a harmonic balancer or motor mounts? My balancer and mounts are OEM and ancient, but I can imagine they would cause a vibration this bad.

Thoughts?

06-15-2016, 11:24 AM	#5
canadians14sr20det Join Date: Oct 2011 Location: Canada Posts: 42 Trader Rating: (0)	So it's been a month now with the 350z box. I've taken it out, bashed the ever living hell out of the tunnel and ensured I have at least 1-2 inches of clearance around the box. Still have the vibration. Gonna loose my mind. I spent a lot of time revving the motor (neighbours hate me) trying to figure out if its doing it only under load. I've found: 1) Vibration occurs if clutch is disengaged or engaged in neutral. 2) Vibration is worse under load. I'm now wondering if it is either bad motor mounts, bad harmonic damper, or a bad clutch. I have an exedy hyper single and I called exedy to ask if they can go out of balance, tech said it is unlikely and they are balanced to 15,000 RPM. So is there a chance this could be a harmonic balancer or motor mounts? My balancer and mounts are OEM and ancient, but I can imagine they would cause a vibration this bad. Thoughts?