Post by
mtcookson »
https://forums.nicoclub.com/mtcookson-u3042.html
Mon Jun 02, 2008 11:09 am
Could be a few things. Clutch may need some adjusting (just bleed the system first, that could do it). Where is the release point of the clutch? (near the floor, mid way, or at the top of the pedal travel, etc?)
The wrong gear oil can make for poor shifting, but it does sound you're having a different issue. Though most of the time the wrong gear oil is used which will make shifting more difficult and will reduce the life of the synchros. I recommend Redline MT-90 or similar, basically a GL-4 only gear oil with the factory recommended viscosity will do. Absolutely avoid any GL-5 gear oil as that is the stuff that will make shifting more difficult and reduce synchro life.
Lastly it could be the synchros themselves. Nissan has a bad habit of using soft metal synchros (brass I believe) in their transmissions and they tend to have poor life. If they are bad, you would need a replacement or rebuild.
Usually most cars have a hard time getting into first gear while moving, one easy way to get it into first while moving is to double clutch (not to be confused with whatever they said in fast and the furious). Its simply a technique used on synchro-less transmissions that can be used on transmissions with synchros if shifting is difficult. Basically all you do is bring it out of gear, release the clutch, rev the engine to match the speed of the car (this you'll just have to learn and develop as you do it), push the clutch back in, and finally shift into first and go. Mine never shifted all that great so I just kind of developed a habit of doing this on mine. Now I just do it without even thinking about it.