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Faults, Fixes and DIY Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix!


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Old Thu, Oct-26-2017, 08:42:26 PM   #1
BrianC
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Default E46 6sp - Replacing My Tranny (and I don't mean my transvestite)

I'm replacing my manual 6 speed because I let morons drive it who proceeded to kill 3rd & 4th gear.

Two questions:

1. Where's the cheapest place to get a used or rebuilt transmission? (I'm in Dallas, but I can have it shipped if necessary)

2. What brands and types of clutch and pressure plate do you recommend? I need cheap but quality.

Thanks so much.

- Brian

Last edited by BrianC; Fri, Oct-27-2017 at 01:21:27 AM.
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Old Fri, Oct-27-2017, 01:18:21 AM   #2
ColinGreene
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Default Re: E46 6sp - Replacing My Tranny (and I don't mean my transvestite)

you know most people convert from SMG to manual.
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Old Fri, Oct-27-2017, 01:22:56 AM   #3
BrianC
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Default Re: E46 6sp - Replacing My Tranny (and I don't mean my transvestite)

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Originally Posted by ColinGreene View Post
you know most people convert from SMG to manual.
Perfect timing because I just read a thread that explained how hard it is to go to SMG.

Thanks!
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Old Sat, Oct-28-2017, 12:48:57 AM   #4
mrgizmo04
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Default Re: E46 6sp - Replacing My Tranny (and I don't mean my transvestite)

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Originally Posted by BrianC View Post
Perfect timing because I just read a thread that explained how hard it is to go to SMG.



Thanks!


Sounds by the response that you got the answer you were looking for, but I'm a bit confused. You trying to go from 6mt to smg?


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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, Rogue RSM with reinforcement, 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.
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Old Sat, Oct-28-2017, 03:57:41 AM   #5
BrianC
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Default Re: E46 6sp - Replacing My Tranny (and I don't mean my transvestite)

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Originally Posted by mrgizmo04 View Post
Sounds by the response that you got the answer you were looking for, but I'm a bit confused. You trying to go from 6mt to smg?


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Thanks for the reply.

No, 6sp to SMG is no longer an option I would consider.

I'm just going to replace the gearbox. Ebay is the best place I've found so far to find cheap used transmissions. Haven't started looking locally yet. I'm still open to suggestions.
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Old Tue, Nov-21-2017, 04:11:59 AM   #6
bigjae1976
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Default Re: E46 6sp - Replacing My Tranny (and I don't mean my transvestite)

Most people take an SMG transmission from another car and convert it to a manual by doing some work on the bellhousing.
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Old Tue, Nov-21-2017, 05:46:21 AM   #7
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Default Re: E46 6sp - Replacing My Tranny (and I don't mean my transvestite)

^ this. Buy ANY low mile SMG trans and just reuse your bell housing.
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Old Tue, Nov-21-2017, 11:23:59 AM   #8
BrianC
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Default Re: E46 6sp - Replacing My Tranny (and I don't mean my transvestite)

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Originally Posted by SSK831 View Post
^ this. Buy ANY low mile SMG trans and just reuse your bell housing.
So it's really that easy? I simply buy an SMG transmission and use my manual transmission bellhousing? (Are you certain that's all there is to it?)

Well, that's not a bad option then. I'll keep that in mind if I have to do this again in the future.

Thanks!

- Brian C
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Old Tue, Nov-21-2017, 02:45:42 PM   #9
SSK831
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Default Re: E46 6sp - Replacing My Tranny (and I don't mean my transvestite)

Quote:
Originally Posted by BrianC View Post
So it's really that easy? I simply buy an SMG transmission and use my manual transmission bellhousing? (Are you certain that's all there is to it?)



Well, that's not a bad option then. I'll keep that in mind if I have to do this again in the future.



Thanks!



- Brian C


Just double check the output shaft lengths and you’re set. I
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Old Tue, Nov-21-2017, 10:54:19 PM   #10
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Default Re: E46 6sp - Replacing My Tranny (and I don't mean my transvestite)

There are sticky threads on m3forum about the conversion. Read through them. If you get an smg tranny, I don't think it's just as simple as swapping the bell housing only. Shift lever centering pins have to go in, all the shifter linkage and bushings have to be swapped, slave cylinder, might be some other plumbing and sensors modifications that 6mt does not need but smg does, etc. You obviously can reuse a lot of the parts you already have on your 6mt, but you'll have to swap them over.


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'85 528e 164k miles (sold)
'05 M3 6MT coupe

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, Rogue RSM with reinforcement, 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.
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