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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Thu, Jun-13-2019, 04:06:11 AM   #1
avusblu_e36
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Default Anyone ever get a manual trans grind to go away?

Anyone ever get a transmission grind to go away? My 95 grinds going into 3rd pretty much every time, hot or cold. from 2 to 3 or from 4 to 3 grinds. Tried some different trans fluids (synth ATF, royal purp syncromax) to no avail.

Any thoughts before I grab a transmission from the junkyard?
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Old Thu, Jun-13-2019, 03:49:14 PM   #2
Texaz3
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Default Re: Anyone ever get a manual trans grind to go away?

Synchros. Aside from new tranny, there is really no easy/cheap fix.
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Old Thu, Jun-13-2019, 04:00:09 PM   #3
Braymond141
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Default Re: Anyone ever get a manual trans grind to go away?

Yes, double clutch if the trans is at fault.

You sure this is a trans issue and not the hydraulic/mechanical side of the clutch? Worn down pivot pin and shift fork can severely limit clutch travel.

Also remove any bullshit aftermarket clutch stops if one is installed. These are not upgrades!
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Old Thu, Jun-13-2019, 07:03:05 PM   #4
avusblu_e36
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Default Re: Anyone ever get a manual trans grind to go away?

thanks Tex, I assume my problem is with the syncro for 3rd, I couldn't even guess where to buy one, let alone tear the trans apart to fix it :P I've seen a few e36 m transmissions for sale for sub 500 bucks, my buddy that does bmw part outs says he may be able to find one for even cheaper, at that price I'd just throw a whole new tranny in and hope for the best.

Thanks Brett, I agree about those stupid clutch stops, I don't think there is one. The trans really behaves nicely everywhere except going into 3rd (either from 2nd or downshifting from 4th)

Could a worn down pivot pin or the shift fork mess things up for one gear only?
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Old Thu, Jun-13-2019, 08:22:04 PM   #5
Braymond141
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Default Re: Anyone ever get a manual trans grind to go away?

Quote:
Originally Posted by avusblu_e36 View Post
Could a worn down pivot pin or the shift fork mess things up for one gear only?
Yes..
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Old Sat, Jun-15-2019, 04:19:49 AM   #6
Technician_Dude
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Default Re: Anyone ever get a manual trans grind to go away?

I'd double check the linkage / bushing / hydraulics situation and if replacing all that stuff doesn't help then try to find another transmission.
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Discussing Seat Leather Restoration in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)