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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 11-14-2019, 12:18 AM   #1
draculr
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4th Gear Crunch at high RPM (not grind)

Hey guys, I've been reading a lot of threads about 4th gear grind at high rpms and people getting their transmissions replaced.

I'm guessing by grind people are talking about this:

My car (2017 86) has a bit of a notchy "crunch" feeling and sound but not a grind as the video above has. I still have a few months of warranty remaining so i'm not sure if it's worth taking it in for that. Is it something where my crunch will turn into a grind soon enough?
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Old 11-14-2019, 12:52 AM   #2
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Hmm, not synchro by chance, if it's only when engaging, not while driving in gear? Still, if you have warranty, i'd use it while car still in it.
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Old 11-14-2019, 03:12 AM   #3
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It's just when engaging 4th gear at higher RPMs. Starting around 4,000rpm or so and getting worse the higher up it gets. But much more like a crunch than an actual grind like in the video above.

I may still take it in and let the dealer tech have a look.
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