Ok, here is the deal. My 3rd gear on my Y1 JDM tranny was starting to grind so I pulled the tranny and had the parts 1, 2 and 4 changed from the picture below. Got everything back together as well as a new clutchmasters stage 3 clutch kit and an ACT prolite B-series flywheel.

After the break in period and a few hard shifts on the street, everything was fine. 15 minutes on the track and the 3rd gears starts grinding again, just like before. Bitchin'.

Pulled everything appart again and we discovered that the step on the flywheel was 0.04'' too much wich caused the clutch never to disengage fully. This is being fixed as I write this.

My question is, the actual parts that matches the revs of the gear to that of the shaft (part 2 of picture below) are good as new, they have been checked. I always believed that a gear would grind when those parts were worn out. I guess was wrong. How do you guys see it?

From looking back at everything, I believe what hapenned is that I missshifted in 3rd on the track with the foot down on the gas due to the flywheel-clutch problem described above, which caused the ring (part 1) to be damaged. Then, everytime I would shift, the ring would not seat properly on part 2 and slide right away on the gear (part 3) before the revs were matched, which causes the permanent grind.

Any input on this?

Here are the pics:

 

anyone?

 

nobody works on trannies here?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by charjacq &raquo;</TD></TR><TR><TD CLASS="quote">nobody works on trannies here?</TD></TR></TABLE>

relax dude 2 bumps in a couple of hours, I'm sure someone will respond.

 

i responded in your other thread
looks like you did all the right things, if the clutch never disengages fully, then you will grind the gear

 

check to see if the ribs on the inside ID of your brass synchro's (labeled 2) is still sharp.

Everything else looks useable and in decent shape.

the engagement teeth under the gear cone look a little hit but will still work.

 

The brass are fine, they are like new and have been changed 2 weeks ago. If I can recall correctly, I made the tranny grind quite a lot on the track, right before it would always grind. This damaged the slider ring, which is why I believe it is always grinding now. Anybody can confirm this?