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Vin Sanity
Mad Mechanic


Joined: 09 Jan 2004
Posts: 1104
Location: Awash in a sea of baby shit and BMW parts

PostPosted: Mon Mar 02, 2009 9:54 pm    Post subject: Reply with quote

My car has 20k miles as of today and 2nd is occasionally notchy or crunchy at various rpm, but nothing too scary. It seems like a handful on bimmerforums have contacted dealers, and an even smaller handful have gotten new transmissions. As for rebuilding, from what I've read, the transmission parts aren't available from BMW, so a rebuild isn't possible, but I dunno if that's bullshit or not.


Also
http://forums.bimmerforums.com/forum/showthread.php?t=952429

Is that something I should even bother experimenting with, or am I going to destroy my car and warranty?

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Raptor
Sprints McGee


Joined: 04 Jan 2004
Posts: 5568
Location: The Wired

PostPosted: Mon Mar 02, 2009 11:17 pm    Post subject: Reply with quote

I vote bull. It did take time for someone to source parts for the s4, but they do exist now (not that they're cheap though). Some had to make the gears for Bmw, and someone can make them again.

Voted: Do want. I'm so going to miss the ability to datalog once my e36 is running again. Being obdI I don't know if that will help, but I might give it a shot. Be careful with it. I know with the vag-com tools I can change plenty of things that *could* be harmful.

Data logging with Ecux is so ftw...

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Vin Sanity
Mad Mechanic


Joined: 09 Jan 2004
Posts: 1104
Location: Awash in a sea of baby shit and BMW parts

PostPosted: Thu Mar 05, 2009 2:25 am    Post subject: Reply with quote

I assume bull too. I think I want to try this datalogging, but I am definitely going to need your help, at least via phone so I can make sure I have at least a slight bit of moral support...

Also, should I bother looking at Dinan tuning stuff? I know they're a big tuning company, and the pricing doesn't seem unreasonable, but the software isn't sold separately and I'd bet the pricing for it doesn't include labor... There's a Dinan authorized shop like 20 miles from my house too, so that's neat.

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Sprints McGee


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PostPosted: Thu Mar 05, 2009 12:22 pm    Post subject: Reply with quote

Dinan is very expensive compared to other options, but they work with bmw so you don't have warrenty concerns (as I understand it). I've never had a warrenty, so I was never willing to pay when there are cheaper equlivant options.

What exactly are you looking for, just engine tuning?

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Marcus Brody
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PostPosted: Thu Mar 05, 2009 12:39 pm    Post subject: Reply with quote

Man, don't chip an NA car. It's like $100 per hp.
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PostPosted: Thu Mar 05, 2009 1:57 pm    Post subject: Reply with quote

Extra readline, and removed limiters can be nice, but really the power difference is hardly noticable.
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Marcus Brody
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PostPosted: Thu Mar 05, 2009 2:52 pm    Post subject: Reply with quote

Depends if you need the extra redline. His engine might already redline so high that it's unnecessary.

Ball's in your court, Drunkle. Find us a stock power curve.
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Vin Sanity
Mad Mechanic


Joined: 09 Jan 2004
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Location: Awash in a sea of baby shit and BMW parts

PostPosted: Wed Apr 27, 2011 10:05 pm    Post subject: Reply with quote

News regarding the notchiness in 2nd gear. Seems a lot of people have blamed and removed the clutch delay valve (CDV) which seems to alleviate the problem. I'm debating on doing it though, as it's kinda nice to have, if I understand it's function correctly.
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Sprints McGee


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PostPosted: Thu Apr 28, 2011 2:04 am    Post subject: Reply with quote

Why would you want any clutch delay, more than the amount desired by your foot? As I understood it, they were implemented to reduce driveline shock inflicted damage.

I've never owned a car with one, but I have noticed it while test driving some cars. That probably means it would not survive long in my ownership.

All of that aside, I don't think it's likely to fix an issue that happens with the clutch dis-engaged. Does the gear feel notchy when you switch gear, or when you re-engage the engine to the driveline?

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Vin Sanity
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Location: Awash in a sea of baby shit and BMW parts

PostPosted: Sat Oct 22, 2011 10:38 am    Post subject: Reply with quote

No longer relevant as the car ceased to be one day after the last post in here, but might as well pursue answers anyway... The grinding/notchiness was when shifting into gear. everything else was normal, and if I was super picky about how fast I revved the engine and what rpm I shifted, and timed it all right and the cosmos were aligned just right I'd get a smooth shift out of it. It never bothered me that much except it made me look like a chump when someone else was in the car with me and that tiny voice in my head that kept telling me how much I love changing syncros in transmissions....
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Sprints McGee


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PostPosted: Sat Oct 22, 2011 10:25 pm    Post subject: Reply with quote

I have to agree with your little voice. Some cars do just seem to have that issue even if the syncros never fail, like all of the b5s (to be entirely fail they do have a defect on the 1-2 collar). I read that once rebuilt they are very smooth, but I'm not likely to bother until it locks up.
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