Ive searched yes but havent exaclty found my anwser. shifting from 3rd - 4th above 5k is grinding even if i push in the clutch for a couple seconds. Ive noticed it doesnt seem to to it right but once the tranny get up to normal temps it will do it everytime. I did change my tranny oil to see if that helped and it did not. I switched to amsoil i know everyone is going to say try syncromesh which i plan on doing, but im thinking there is somethign wrong with the syncro. None of the other gears are doing it and i hardly ever even drive shifting into 4th at a high rpm. Or im wondering if it may be the clutch not fully releasing stock clutch 03 14k miles i adjusted the pedal and it did not help. Either way I guess i should take it to the dealer ive noticed there are tsbs on some of the syncros

 

yes take it in, 4th and 5th syncros are crap on the 03 evos, i had to rebuild my tranny at my cost because i had a clutch

 

I just had the same problem. Not in any other gear, just going from 3rd to 4th and only above 5000 rpm. I sent my trans to Shepherd and got the normal upgrade (synchros, forks, seals,) and turned out I needed a new input shaft & reverse gear too. Wierd, never had a problem with reverse, but apparently the dude who I bought it from did. Anyway, he said 4th looked ok, just a little scored. I asked him replace it anyway. Trans shifts real smooth now. Its beautiful.

 

ill try the dealer how long did it take for the rebuild and how much to ship aprox

 

same exact thing happened to me with my 03. got the tranny rebuilt under warranty even with an excedy twin in it.

 

btw if i ever have any problems with my new tranny,06 BR350 IX#005 it,s going to sheps for a complete rebuild

 

Before you go and do anything drastic: check your tranny fluid level. If it is low, this could cause the problem. Also, try using synchromesh, this might make the grinding stop altogether.