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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > 6mt tear down



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      12-04-2019, 12:06 AM   #1
Shinel
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6mt tear down

So my reverse gear is shot on the s6-45bz, but I'm gonna replace the synchro. Took all apart, but wondered if anyone knows how to remove these shift/detent pins?
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      12-04-2019, 03:18 AM   #2
DCook
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Following this. Also curious where you're getting the syncros from? Id like to rebuild my n54 6mt syncros.
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      12-04-2019, 07:29 AM   #3
TheMidnightNarwhal
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Quote:
Originally Posted by DCook View Post
Following this. Also curious where you're getting the syncros from? Id like to rebuild my n54 6mt syncros.
Yeah I thought these transmission couldn't be rebuilt and they didn't sell parts.
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      12-04-2019, 08:39 AM   #4
bbnks2
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Quote:
Originally Posted by TheMidnightNarwhal View Post
Yeah I thought these transmission couldn't be rebuilt and they didn't sell parts.
Anything can be rebuilt. This issue is that the syncrhos aren't available and there are no rebuild kits. so you need to fabricate up your own way to plug the transmission back up with press fittings. maybe by tapping all the holes and plugging them.

I believe a reverse synchro has been cut that will fit the 45bz and is being sold by the aftermarket. Most people need 2nd gear.
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      12-04-2019, 04:51 PM   #5
Shinel
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I have a 2nd donor gearbox, so oem synchros. Disassembly is somewhat straight forward but you have to take a few detent pins out to not break anything.
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