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Gtfour 11-25-2011 07:40 PM

FS: E46 M3 6 speed transmission / OEM Clutch & Flywheel
I'm selling my E46 M3 6 speed transmission with OEM clutch & flywheel.

The transmission got 92000km on it and the clutch/pressure plate/flywheel 37000km.

Everything work well.

Reason I'm selling this unit is to do a 5 speed conversion

Price: 1500$

JINT 11-26-2011 08:25 PM

huh? 6spd to 5spd? Am I missing something?
This is a deal and a half though.

craz azn 11-26-2011 08:29 PM


Originally Posted by JINT (Post 1536478)
huh? 6spd to 5spd? Am I missing something?
This is a deal and a half though.

Weight purposes. He is building a track car.

dcramer 11-26-2011 09:58 PM

How much weight are we talking here ? I would think that would be more than made up with a high ratio diff and the 6sp ?

Gtfour 11-27-2011 01:36 AM

I already have a 4.10 diff.

Yes I'm doing the conversion to save up some weight, a normal swap save around 20lbs. However, I also need a different driveshaft to do this swap and I'm looking at a custom carbon fiber one piece DS, another 6lbs and better vibration dampening. And finally, I will get a Bimmerworld race aluminum flywheel and 5'' clutch, complete unit weight 11lbs.

In the end, I,m looking at 35lbs and a lot less rotational mass so it should rev up faster.

Even if the 5 speed are less reliable than the 6 speed unit, they cost a fraction of the price and I'm not looking to add much power to my track car, I'm just looking to shave the maximum weight possible.

Here is my track car:

And here is my new race car project:

I would like something around 2600lbs :cool:

SiR 11-27-2011 02:30 AM

5 spd is also more reliable in track apps than the 6 spd from anything Ive seen...

dcramer 11-27-2011 07:54 AM

I would think with the 4:10 diff you are gonna run out of rpm with the 5sp but I guess it depends on the track.

I've actually heard the 5sp is much more reliable as well.

The driveshaft is dubious, yes it's lighter but the mass is on a very small radius. Rotational mass is a function of mass and radius.

BTW rotational mass can add another effective 1000lbs to a car, wheels being one of the worst culprits.

Nice projects.

Are you selling your 6speed with the driveshaft ?

BTW, I have some 5sp manual transmissions for sale.


JINT 11-27-2011 09:59 AM

wow, sick M3

roman 11-27-2011 11:20 AM

what are those rims on the m3? that thing looks like a beast

dbworld4k 11-27-2011 11:57 AM

Sent you a PM two days ago. Please check it and respond. Thanks.

Gtfour 11-27-2011 02:27 PM

Wheels are TR Mt1 18x9.5 et35 and 18x10 et25. They are not the lightest wheels but 20lbs isn,t bad. My RAC Monolites RS 110 were 17lbs and super strong.

I spend most of my time at Le Circuit Mont Tremblant, where I hit 225km/h in the backstraight so I think I won't ran out of gear.

With my actual setup, I barely use the 5 gear at LCMT so the 6 gear is useless.

Rotational mass as mention isn't just the driveshaft weight loss but also the flywheel/clutch/pressure plate assy.

The E46 M3 driveshaft will be sell separetely.

dbworld4k I will send you a pm right now

dcramer 11-27-2011 02:35 PM

regarding the rotational mass I assumed you would put the light flywheel clutch in anyway. My point is that for 6 lbs of driveshaft it's a questionable decision as the driveshaft is only 4" in diameter. Carbon is wonderful stuff but it won't outlast steel.

Check out this software for exact information. I am just guessing.


dbworld4k 11-27-2011 02:47 PM

With a 5spd and 4.10 gears, you could hit a theoretical VMax of ~145mph at 8000RPM with the S54.

sparf328 11-28-2011 09:55 PM

if i had the money id snatch this up in a second

Gtfour 12-09-2011 09:26 PM

Still available

Found 2x 5-speed tranny for 300$*th-up*

One from a MZ3 and the other one from a E36 M3.

Don't need the 6-speed anymore.

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