transmission Problem... Please Help!!!
transmission Problem... Please Help!!!
I did it right... I installed a new Fidanza Flywheel, SPEC stage II PP, OEM slave cylinder, clutch disc, gear oil, and a Nismo transmission mount. Clutch feels great, no bleeding issues with the SC, good grip, and awesome launches. Huge problem though, a horrible vibration between 2-3k RPM while decelerating (still a little loud accelerating). Took the car in to two places, Nissan service center and a transmission specialist, Nissan couldn't figure it out told me to replace the transmission ($4000 no thanks) specialist shop called it a torsional vibration that is caused by a twisting force (ie torsion). Both said driveshaft and carrier bearing were absolutely fine. Is it possible I got an out of balance part, FlyW, Disc, Pressure Plate, thats causing the resonance vibration??? I am worried about it grenading....Thanks for any help I appreciate it.
Re: (NISTECH)
No... however, through a lot of searching here on NICO I tried rotating the driveshaft through all of its possible orientations. No matter which position I bolted it in it gave me the same resonance vibration. I know this sounds strange but with two shops both inspecting the driveshaft and saying it was sound I have to lean away from the driveshaft. transmission specialist shop advised replacing the new clutch system with the old unit (OEM). Ever hear of a Pressure Plate/Flywheel being out of balance from the factory?? Can you get a dud PP/FW from a supplier?thanks for the feedback I appreciate it.
I dont always go with what other shopd say, I start from scratch as I have seen things over looked by other shops. The center support bearing is an easy visual inspection so I dont doubt thier assesment of it but I did wonder weather it was bolted up correct as that is not easily done by visual.
It is possible to recieve bad parts happens in the dealer from time to time. Since this didnt happen prior it has to be either the parts you installed or something you did during the install. I seriously doubt its your transmission if you didnt have the problem before. In your shoes I would pull the trans back out and look closely at the throw out bearing alignment on the carrier, the pilot bushing alignment in the crank shaft, the wear pattern on the pressure plate, the alignment of the pressure plate it self, the alignment of the flywheel to the crank [make sure it is sitting flat on the crank. with the flywheel installed rotate the crank and see if the flywheel has excessive run out. This is best done using a dial indicator.
It is possible to recieve bad parts happens in the dealer from time to time. Since this didnt happen prior it has to be either the parts you installed or something you did during the install. I seriously doubt its your transmission if you didnt have the problem before. In your shoes I would pull the trans back out and look closely at the throw out bearing alignment on the carrier, the pilot bushing alignment in the crank shaft, the wear pattern on the pressure plate, the alignment of the pressure plate it self, the alignment of the flywheel to the crank [make sure it is sitting flat on the crank. with the flywheel installed rotate the crank and see if the flywheel has excessive run out. This is best done using a dial indicator.