Tranny gear bore distortion

[mfrerichs]

I have a 1985 911 that I am rebuilding the 5 speed transmission. I pressed the synchro hub onto third gear. I then slid the bearing and inner race into the gear, on the side opposite of the the synchro hub. The race and bearing seemed to spin freely however when I try to slide the bearing in or out on the side of the gear with the synchro hub the bearing does not move. I assume that I distorted the top of the gear bore when the synchro was installed. I have read other posts and John Walker recommends using a sunnen hone on the bore if it distorts. I was wondering what spec's I should give the machine shop such as diameter tolerances, taper, surface finish, etc.. Also, does anyone know of a good machine shop I could send the gear to for the honing that has done this work before. I have searched the forums and read many transmission rebuild posts but I cannot find any info on the bore. Any help would be greatly appreciated.

Thanks,
Marc

[john walker's workshop]

measure the bore on one of the other gears, or leave the measuring to the shop. just a few passes on the hone usually fixes it. send the bearing and race along with the gear.