I had 5th grinding from time to time from day one when I try to quick shift into fifth, but with time started to shift easier to fifth, without issues, until recently, fifth started to grind all the time I try to shift to it, I thought it was syncros but didn't bother to change them until now, I would be more interesting in getting an upgrade to them if it is available instead of getting a new trans that will have same issue with track time. My car has around 25k miles and lots of track days.
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Originally Posted by JARblue
Agreed. A brand new 370Z OEM transmission is too cheap to bother rebuilding syncros in a used one.
My understanding is Chris Carver Motorsports in Houston has experience building these transmissions. I am considering reaching out to him when I finally decide to address the problem. No point in putting stock syncros back in if I have it rebuilt.
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Jar, what is the options available?