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Transmission or Clutch Taking a dying?

I have 120k miles on my car.
Here's what happens:
I have an Exedy Stage 2 Clutch. About 10k miles in, I started having issues with getting locked out of 1st gear from a launch, but would shift smooth while driving normally and hard driving. Now the more miles I place on the clutch, it is becoming increasingly hard to shift through the gate under full throttle redline shifting. And when I shift sometimes, I'm either locked out of shifting from let's say, 2nd to 3rd gear, or I grind gears or sychros. This never happened earlier.
When I shift under normal driving conditions, the shifting is ok.

Now I'm trying to figure out, are the sychros/gears going bad, or is my clutch not completely deactivating when I push in the clutch. Also, since I installed the clutch, it has a rather low catch point but the grinding and lockouts from 2nd to 3rd, 3rd to 4th etc just started recently.

Which Exedy Stg2 kit did you install? The older Stg2 kits exhibited this issue. They revised them to correct this issue.

Quote:

Originally Posted by JDKane527 (Post 2711554)

Which Exedy Stg2 kit did you install? The older Stg2 kits exhibited this issue. They revised them to correct this issue.

Bought mines i think Feb. 2015. Not sure when they revised.

Did it include a lightweight flywheel or just clutch assembly?

Quote:

Originally Posted by JDKane527 (Post 2711609)

Did it include a lightweight flywheel or just clutch assembly?

It had the light weight flywheel.

I recently installed an aftermarket clutch with lightweight flywheel as well, and had the same clutch not disengaging issue. I adjusted the clutch pedal slight higher to get more travel and that fixed the issue.

Quote:

Originally Posted by Cal3000 (Post 2711619)

It had the light weight flywheel.

You have the older style of the clutch assembly. I recommend contacting exedy to initiate a clutch inspection. I sent mine in recently and received the revised clutch assembly under warranty.

Quote:

Originally Posted by pepelocuas (Post 2714619)

I replaced the original transmission at 10000 miles. Got locked in 3rd gear. I replaced the tranny with a used one fron a car with 3000 miles. After another 10000 miles this transmission again got locked on 3rd gear. Problem on both transmissions started with grinding noise in neutral and in any gears and for a while went away but was always hard to shift on 2nd and 3rd. Is this a common problem with these transmissions. Someone told me to use Motul 300 gear oil.

changing fluid is an easy way to tell instead of buying another transmission lol.

Quote:

Originally Posted by pepelocuas (Post 2714727)

I talk to an Subaru expert mechanic and told me that after a while with shifting problems, eventually the fork bend and transmission is locked. There is an improved kit that helps and also he uses a cocktel of 3 oils to prevent shifting problems. Also he said that the METALS inside the transmission are POOR quality.
The best solution is to remove everything inside the transmission and send it to CERAMIC COATING and all problems will be solved, but is very costly

I heard the opposite, though I have not confirmed it. I have read that the gears in the transmission are at extremely close tolerances and that is what causes shifting issues when the transmission is not properly warmed up due to the expansion and shrinking of the metals when cold and hot. better fluid helps this problem.

though, I have also read that the stock clutch fork sucks when paired with aftermarket clutches and is prone to breaking.

I still recommend you change your transmission and diff fluid to the Motul though since it is generally approved by many people on these forums. I changed mine at 4k miles and I am currently at 14k with no shifting problems.