I currently have a hydro b16 transmission with a gsr fifth and a type r lsd. The problem is that my transmission grinds second, but it won't grind if i shift to second gear slowly around 2800-2400 rpm and that's letting the rpm drop after pushing in the clutch in first gear around 3500rpm. Also if i'm just at idle and i push my clutch in and put it into second gear it makes a big grind....so...... i thought transmission shouldn't be moving if the clutch is pushed in right????? It's only second gear! every other gear is fine....We pull the transmission off last week and took a look at it and everything looks fine( synchros, shift fork, slider, etc.) Therefore, i had a hydro LS transmission laying around so...(I said wat the heck! just swap some of the LS tranmission stuff over maybe it will fix the problem!) we took the 1st/2nd gear shift fork, the sliders, the synchros, the selector and we also even used the LS tranmission casing. And now it still grinds on second gear! Before i put this b16 tranmission in. i ran the LS tranmission in my car with the 6puck ACt clutch and everything was fine. Now i run the b16 tranmission with the Ls components and it still has the second gear issue.I still have the same ACt clutch,but i add the 12.5 act flywheel on it . So i'm really in need of help right now..... i can't figure out the problem...... this is the 3rd time we pulled the tranmission out and it's still the same problem....Hope i could get some info in solving this problem

 

Did you check the shift mechanism assembly? You may have a bent piece or something misaligned. Also check for any burs on any moving parts that would hold them from moving freely.

 

Thanx me and my homie will check that out when we pull it out again and i will let u knoe the update.....hope that's it cuz i kan't downshift from 3rd to 2nd without a big *** grind! Well thank you for the info....keep you posted