Originally Posted by jesterjames
so what did they change, i mean in comparison to a V4 JDM STi tranny vs this new LGT vs 02-05 WRX
what has really been changed that is "increasing the life" of them.
04 WRX's saw RA width gears, yet people were still blowing them apart.
I believe the V4 JDM STi tranny has shot peened and cryo'ed gears in it. That and the 4.44 Final Drive helps.
But whats different in the LGT/"NEW" WRX tranny
I believe the LGT gear set has a wider engagement profile, not sure about weather they are treated differently (cryo or shot peened). I am pretty sure they are not, just a bit wider.
Originally Posted by A Fatal Ode
2010 wrx had to replace throwout, clutch, and flywheel at 9k.. had a bit of a chirp and came to find that the entire casing was covered in fibers... fixed under warranty... 11.8k and stage 2 now... kinda hear that chirp again.
High pitched, constant regardless of RPM, goes away when you depress the clutch? If so, from my research (because that is the description of the noise I get) it is the cluch fork ratteling against somthing and is due to the soft firewall flexing and warping over time. Taking mine in in a couple of weeks to check it out.
Transmission is still humming along just fine (32k), sounds like all of them are (with the exception of the guy with blown first, sucks man, sounds like it could have been a defect (I hope) and hopefully they will take care of you).
So, knock on wood but it sounds like they are holding up under power so far...