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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Jun-25-2018, 06:02:38 AM   #1
Hamann_m3
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Lightbulb 1st to 2nd gear super notchy at full throttle...Thoughts?

Hello everyone, so I am the second owner of a 2003 e46 m3 6speed. The car has about 137k miles on it. I am curious to here thoughts of this issue. At full throttle shifting from 1st to 2nd gear is super notchy where I have to man handle the shifter and force it into 2nd gear. Most of the time i pull of the shift knob off how hard I try to throw it in...But normal driving 1st to 2nd is not bad (not full throttle)

So far based on my research I have planned....

1. Changing tranny fluid
2. Looking into a short shift kit (not sure if this will aid)
3. CV delete

Any other suggestions?

Thank you for your time

Sean
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Old Mon, Jun-25-2018, 06:35:42 AM   #2
mrgizmo04
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Default Re: 1st to 2nd gear super notchy at full throttle...Thoughts?

Previous owner(s) probably danced around the gears a bit much. This sounds like worn synchros/internals and they can not be rebuilt.

Short shifter will make effort higher and even more notchy. I don't know if there is one that helps this.

Changing fluid can help a bit. Some noticed a difference adding royal purple synchromax.

Cdv will not do anything to change how worn synchros feel during a shift since you change gears with clutch fully disengaged.

You can try to swap a used smg tranny in (they don't take the same beating since they are shifted by the computer) or get a new unit from distributors (very expensive).

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Old Mon, Jun-25-2018, 07:28:42 AM   #3
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Default Re: 1st to 2nd gear super notchy at full throttle...Thoughts?

Quote:
Originally Posted by mrgizmo04 View Post
Previous owner(s) probably danced around the gears a bit much. This sounds like worn synchros/internals and they can not be rebuilt.

Short shifter will make effort higher and even more notchy. I don't know if there is one that helps this.

Changing fluid can help a bit. Some noticed a difference adding royal purple synchromax.

Cdv will not do anything to change how worn synchros feel during a shift since you change gears with clutch fully disengaged.

You can try to swap a used smg tranny in (they don't take the same beating since they are shifted by the computer) or get a new unit from distributors (very expensive).

Sent from my SM-G950U using Tapatalk
Understood.Got it so basically I need a new tranny. If it was a synchro going out wont it grind instead of being tough to get into gear?
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Old Mon, Jun-25-2018, 03:03:18 PM   #4
mrgizmo04
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Default Re: 1st to 2nd gear super notchy at full throttle...Thoughts?

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Originally Posted by Hamann_m3 View Post
Understood.Got it so basically I need a new tranny. If it was a synchro going out wont it grind instead of being tough to get into gear?
The feeling of "super notchy" is the synchro, unless you meant only the very increased effort to get it into gear. "Super notchy" does have some grind. Just not being able to get it into gear, that can be a slightly different path to replace tranny mounts, plastic cup and other shifter linkage bushings.

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All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.

Happy to help with VANOS or any other DIY job around NorCal
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Old Tue, Jun-26-2018, 02:13:26 AM   #5
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Default Re: 1st to 2nd gear super notchy at full throttle...Thoughts?

Quote:
Originally Posted by mrgizmo04 View Post
The feeling of "super notchy" is the synchro, unless you meant only the very increased effort to get it into gear. "Super notchy" does have some grind. Just not being able to get it into gear, that can be a slightly different path to replace tranny mounts, plastic cup and other shifter linkage bushings.

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Yah there is no grind at all that just really hard to throw it into 2nd gear. Okay perfect thats where I will start. Thank you for the advice my man
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Old Mon, Jun-25-2018, 06:47:58 AM   #6
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Default Re: 1st to 2nd gear super notchy at full throttle...Thoughts?

Shift slower. Put some thicker lube in there, 75w90, hopefully you're in a warmish climate. Stay with the stock shifter setup, but refresh the bushings. Keep or obtain the tall, stock shift knob as well.

Or replace the tranny as said above. But I wouldn't use a runny atf like synchromax, I think you want to slow the synchros down to engage.
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Old Mon, Jun-25-2018, 07:30:44 AM   #7
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Default Re: 1st to 2nd gear super notchy at full throttle...Thoughts?

Quote:
Originally Posted by TboneM3 View Post
Shift slower. Put some thicker lube in there, 75w90, hopefully you're in a warmish climate. Stay with the stock shifter setup, but refresh the bushings. Keep or obtain the tall, stock shift knob as well.

Or replace the tranny as said above. But I wouldn't use a runny atf like synchromax, I think you want to slow the synchros down to engage.
Yah Im going to have too...But once im on the throttle your natural instinct is to change fast. Yes i was reading about the bushings. Is there a list for all the shifter bushings? So no to getting a UUC short shifter or any other...
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Old Mon, Jun-25-2018, 08:02:05 AM   #8
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Default Re: 1st to 2nd gear super notchy at full throttle...Thoughts?

Change ur fluid first
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Old Mon, Jun-25-2018, 03:28:50 PM   #9
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Default Re: 1st to 2nd gear super notchy at full throttle...Thoughts?

Do you have the stock knob? Going back to the taller knob got rid of my 1st gear issues.
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Old Tue, Jun-26-2018, 02:14:15 AM   #10
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Default Re: 1st to 2nd gear super notchy at full throttle...Thoughts?

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Originally Posted by Paulo M View Post
Do you have the stock knob? Going back to the taller knob got rid of my 1st gear issues.
I have the stock shift knob and shifter was thinking of going to a UUC short shifter, thinking it would solve my problems...
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Discussing 1st to 2nd gear super notchy at full throttle...Thoughts? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)