I have a 91' 240sx ka24de and when i **** from first to second the gears make a grinding sound. im guessing that the gears from first to sencond are ****ed but keep in mind its only from 1st to 2nd. it doesent happend all the time, when i drive normally it doesnt but when fast shifting it does. what do you think i should change? could it be the shifter brushing? and what is the main function of a shifter brushings. they sale on on t3's website.

 

change your fluid. Bushings???