Bump from the dead. I started noticing this after my 5 speed swap.
Announcement
Collapse
No announcement yet.
Hard Shifting into 2nd
Collapse
X
-
Originally posted by Threehz View PostAs it says. Shifting into second isn't actually hard, but it's not smooth and totally makes spirited take-offs less fun, also annoying for general driving purposes.
I'm wondering, do I simply need a new bushing kit or is the old stick slowly taking a shit? Any ways to tell?
Synchronizers are wear items.
Bmw still has new parts avail.
Picture of the Guts of a zf 5 speed; you can see the heat marks on the synchronizer wear surfaces as it must equalize speeds.
This particular box would not go into 1st. The male spline part is production welded to the gear, it fractured in a couple places and the weld broke clean off. Guide tube, Syncro all ruined.
OBD1 M54/M52TU swap as a M50b25
Z4 non powered steering rack fits e30
Euro e46 2005/6 320d 6mt gearbox into E30 with M20 hardy and beck 1985 327s engine
Comment
-
Originally posted by Wanganstyle View PostSynchronizers are wear items.
Bmw still has new parts avail.
Picture of the Guts of a zf 5 speed; you can see the heat marks on the synchronizer wear surfaces as it must equalize speeds.
This particular box would not go into 1st. The male spline part is production welded to the gear, it fractured in a couple places and the weld broke clean off. Guide tube, Syncro all ruined.
Issue is, once you open up the gearbox, you may as well replace all the bearings. Those are not cheap, i calculated €1,337 just for the bearings. Then, replace all syncros is another €890 as well. So, we are just over €2K for just the parts, assuming nothing else is grinded, broken or needs replacing. Also required are a lot of big pulling tools, and some would need to be grinded down to fit between the gears.
My local dealer offers €3.8K for a replacement transmission, taking in your old on (basically a rebuild) and you get a 2 year BMW warranty.
So...what would you do?
Comment
-
Originally posted by S.J.1981 View PostThis is indeed true, syncros are a wear item.
Issue is, once you open up the gearbox, you may as well replace all the bearings. Those are not cheap, i calculated €1,337 just for the bearings. Then, replace all syncros is another €890 as well. So, we are just over €2K for just the parts, assuming nothing else is grinded, broken or needs replacing. Also required are a lot of big pulling tools, and some would need to be grinded down to fit between the gears.
My local dealer offers €3.8K for a replacement transmission, taking in your old on (basically a rebuild) and you get a 2 year BMW warranty.
So...what would you do?
Actual racing product = car is trailer only, racing in a competitive series wheel 2 wheel = Not r3vtard spec
These gearboxes were damaged in racing, replacement new parts purchased and then all components being surface coating treated to remove friction to be optimal for endurance racing. This is not cheap or easy but its good
BMW sells remanufactured oem transmissions - price is less than doing one up from scratch yourself.OBD1 M54/M52TU swap as a M50b25
Z4 non powered steering rack fits e30
Euro e46 2005/6 320d 6mt gearbox into E30 with M20 hardy and beck 1985 327s engine
Comment
-
Originally posted by S.J.1981 View PostThis is indeed true, syncros are a wear item.
Issue is, once you open up the gearbox, you may as well replace all the bearings. Those are not cheap, i calculated €1,337 just for the bearings. Then, replace all syncros is another €890 as well. So, we are just over €2K for just the parts, assuming nothing else is grinded, broken or needs replacing. Also required are a lot of big pulling tools, and some would need to be grinded down to fit between the gears.
My local dealer offers €3.8K for a replacement transmission, taking in your old on (basically a rebuild) and you get a 2 year BMW warranty.
So...what would you do?
Worked on my E36 M3's ZF transmission. 3rd gear would grind with every up shift. After trying MoS2, and driving for about 500 miles, it stopped grinding, and has been fine for 15,000 miles.
Comment
-
Originally posted by Wanganstyle View Post
I build everything from scratch locally for shops. This is the motorsports world way of doing it if you have the ability/tools/budget/shopspace etc and demand for actual racing product.
Actual racing product = car is trailer only, racing in a competitive series wheel 2 wheel = Not r3vtard spec
These gearboxes were damaged in racing, replacement new parts purchased and then all components being surface coating treated to remove friction to be optimal for endurance racing. This is not cheap or easy but its good
BMW sells remanufactured oem transmissions - price is less than doing one up from scratch yourself.
Comment
-
Originally posted by jbontke View Post
Wow! $3,500 is about 2k more than I was thinking. I'll stay with rebuilding the trans myself.
This shop offers full rebuilds from $2,000.
$3,500 for a factory rebuild doesn't sound bad.
Comment
Comment