well i dropped in my motor finally and all worked out well. until i started driving it. it goes into 1st and 2nd, but 3rd and 4th it grinds and wont catch the gears. anyone have any ideas? i am stumped and would rather not have to pay the tranny place to fix it. BTW its a totally rebuilt b18c1 with all new clutch flywheel and pressure plate.

 

check your shift linkages
if thats clear
flush the tranny with honda MTF
if that dosent work
your screwed.

 

could it be the shift forks??