You're fortunate - my rebuild came with a lot of gear noise from within the tranny - bearings were shot at 70k miles. 115k now, some bearing noise is back, that's the risk with a rebuild. Since the have been using redline fluids, changed only once since the 70k rebuild - not sure why I'm not getting the miles out the manual transmission I would expect. First time around the factory fluids had not been changed.
Shifts smoothly but has bearing noise somewhere when you let out the clutch. Linkage was only replaced because it was sticking and squeaking like crazy and I was tired of the noise!
As a 3rd car, it doesn't see the miles it used to, but I swear the transmission is the only weak link in an otherwise very good car w/o problems of any kind. Wife is on me to get rid of it, but as original owner and no complaints it makes a great car for winter (better than my 350Z or G35 Coupe!) and besides, with suspension mods and a few other low-tech changes, it is a blast to drive on backroads fast ;-)
Steve
http://homepage.mac.com/stracy01/Auto/PhotoAlbum2.html
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Originally Posted by JustSayGo
My transmission used to stick in 5th after it was driven awhile. The pieces that move to couple different gears together as we shift in any transmission are shaped on an angle so that as power is applied it pushes the coupled pieces tighter together. That is so they won't reverse the angle shape as they wear and push the coupling apart under power and slip out of gear. Detent balls and springs are not the only thing that hold a transmission in gear. The Nissan maintenace schedule says change the oil every 30,000 miles or 24 months. Using thinner oil will let the syncros slide easier and grab quicker allowing the transmission to shift faster. Don't use thicker oil than Nissan specs. I recently replaced all the bearings in my transmission. It probably still had the original gear oil in it at 116,000 miles. I use SAE 15-50 Mobile 1 motor oil in it. Costs about the same as stinky gear oil. My transmission does not hang up in 5th gear now. Honda uses SAE 5W-30 motor oil in their transmissions. Many manufactures use thin oil in their transmissions. Chrysler Muscle car manual transmissions use ATF. I believe the linkage is the same on both ends. A bushing with a bolt thru it connected by the tube. If the bushings or pivot points are worn the shifter will be loose when it is in gear. Thick sticky dirty gear oil makes the transmission hang in gear. The problem should be worse in cold weather. Change oil instead of the shift tube.
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