yaya
sounds like the ole synchro is shot on that gear

does it happen when engine/tranny is cold or hot or always?

someone probably repeatedly ground the **** outta it when they owned the car. or are u the first owner?

anyway, my h23a1 tranny has almost 200k miles and it only grinds once in a while when cold on 2 and 3...

actually it doesnt do it anymore since i checked my shift linkage and found a goddamn washer missing on the 1-2 3-4 5-R axis, previous owner prob had a short shifter and dropped the washer below the linkage base plate when he took it out.

btw i beat the shit outta my tranny

~boomer