What Else Should I Change When I do My Clutch?

[Arith2]

I REALLY wish we would've had this discussion a week ago. I'll see how the brass holds up I guess. Maybe in 20k miles I'll do a manual swap. Probably not though. I really don't want to drop my trans because of the SMG. That was the most annoying part.

[heinzboehmer]

Just got my Luk clutch kit and it looks like it doesn't come with the pressure plate screws. Updated the list I made to include those.

[terra]

I meant the factory metal pin.

The E46 M3 factory pin is plastic and they do fail.

On the other hand, my factory plastic one looked brand new at 165k. I did end up replacing it with an OE metal one, and there is a bit more noise, but nothing crazy.

Flywheel is just a waste of money, if your current clutch hasn’t been slipping. The original fly wheel is good for 2-3 clutches, so long as it hasn’t been scored.

It's also cheap enough nowadays that I'd hesitate not to replace it when doing all that labor.

[mrgizmo04]

Just got my Luk clutch kit and it looks like it doesn't come with the pressure plate screws. Updated the list I made to include those.

Yeah pp bolts are not included, even in Sachs kits. Some kits don't even come with the clutch disc alignment tool, did yours?

[Arith2]

Yeah my Luk kit didn't come with them either. It does come with an alignment tool though. The bolts were on my flywheel and are reusable ones.

[mrgizmo04]

Yeah my Luk kit didn't come with them either. It does come with an alignment tool though. The bolts were on my flywheel and are reusable ones.

Just be careful reusing.
The torque spec pdf has some "interesting" comments included for the flywheel bolts - it says to always replace and not to use locktite. Well, "always replace" is up to the owner, they are not stretch bolts, but regarding locktite comment, all new ones come with some sort of thread lock on them...

PP bolts in pdf says to always replace, no comment about locktite, but all new ones come with some thread lock.



Personally I replaced. If I were reusing, I would wipe the threads clean, brake cleaner blast them and use locktite.

[terra]

Yeah my Luk kit didn't come with them either. It does come with an alignment tool though. The bolts were on my flywheel and are reusable ones.

Even if it comes with one, you should buy a separate one that has a removable screw so that you can get the pressure plate over it without releasing the SAC mechanism.

[mrgizmo04]

Even if it comes with one, you should buy a separate one that has a removable screw so that you can get the pressure plate over it without releasing the SAC mechanism.

Yeah good point, Terra, I've seen some kits come with the ring kind.

The kind that will NOT work on our car due to SAC mechanism:


The kind you want to make sure was either included in your kit, or that you have, before mounting the clutch/pp is this kind:

[heinzboehmer]

The Luk kit I got has the screw type alignment tool. Also for $10 I'd rather just replace the pressure plate screws, so I ordered them.

[terra]

The one I got came with the ring tool but I had bought the screw type tool separately so that was okay.

could probably lot just 3D print one too nowadays.

[Arith2]

Just be careful reusing.
The torque spec pdf has some "interesting" comments included for the flywheel bolts - it says to always replace and not to use locktite. Well, "always replace" is up to the owner, they are not stretch bolts, but regarding locktite comment, all new ones come with some sort of thread lock on them...

Personally I replaced. If I were reusing, I would wipe the threads clean, brake cleaner blast them and use locktite.

I did get news ones with my flywheel but the are reusable is what I meant to say. I definitely put some blue locktite on them. JB Racing uses stronger bolts and in their directions it says basically the last thing you said. Clean and relocktite when removed. They also came with washers which I don't think OE bolts do. I believe this helps keep them tight. The reason they do this is because the flywheel is more track oriented. It doesn't come with actual threads, they insert helicoils instead of actually machining teeth into the aluminum. It's designed to be able to come off and go back on. My exhaust covers up alot of the chatter. I couldn't even tell there was any. The camera definitely picked it up though.

[keljos]

I'm getting ready change out the clutch in my car. Plan on replacing it with the Luk kit and using OE throw out and pilot bearings. Since the trans will be out of the car, I plan on replacing all detent springs, rear main seal, driveshaft centering sleeve, and shifter bushings.

I was thinking of doing the seals for the input, output, and selector shafts, but my recent experience installing a new front crankshaft seal is making me want to stay away from radial seals. My trans has no leaks and so it seems replacing these seals isn't necessary. My car has 122k on it so should I replace them anyway?

Is there anything else I should do with the trans off? Thanks!

Edit: This is the list of things I ended up ordering for myself. I left a couple of things out (some shifter bushings, exhaust gaskets, etc) because I either already had them or they were included as part of the aftermarket pieces I bought.

Item	Part Number	Quantity	Unit Price	Total Price	Vendor
Luk Clutch Kit	-	1	$269.29	$269.29	Amazon
Pressure Plate Screws	21207548052	6	$1.52	$9.12	FCP
Throw Out Bearing Guide Tube	23117512866	1	$65.78	$65.78	ECS
Throw Out Bearing	21511223582	1	$73.77	$73.77	FCP
Pilot Bearing	11211720310	1	$26.40	$26.40	FCP
Steel Pivot Pin	21511223281	1	$23.92	$23.92	FCP
Release Arm	21511223302	1	$30.72	$30.72	FCP
Locking Pin	23111222979	1	$20.05	$20.05	ECS
Locking Pin	23311224130	1	$17.06	$17.06	ECS
Ball	7119986280	1	$0.99	$0.99	ECS
Locking Pin	23317501584	1	$39.29	$39.29	ECS
Thrust Pin	23311282444	1	$27.16	$27.16	ECS
Compression Spring	23311228393	1	$7.04	$7.04	FCP
Compression Spring	23111222720	1	$8.77	$8.77	FCP
Compression Spring	23317511337	1	$9.55	$9.55	FCP
Compression Spring	23311228405	1	$9.32	$9.32	FCP
Repair Kit	23317506947	1	$186.24	$186.24	ECS
Flywheel	21212229900	1	$383.34	$383.34	FCP
Flywheel Bolts	11222243051	8	$2.39	$19.12	FCP
Rear Main Seal	11142247867	1	$122.45	$122.45	FCP
Input Shaft Seal	23121228493	1	$14.43	$14.43	FCP
Output Shaft Seal	23121222769	1	$5.32	$5.32	FCP
Shift Selector Seal	23127501582	1	$22.12	$22.12	FCP
Driveshaft Centering Sleeve	26117526611	1	$9.25	$9.25	FCP
Guibo	26112226527	1	$68.78	$68.78	FCP
Guibo Nuts	26127536563	6	$1.63	$9.78	FCP
Exhaust Gasket	11627830668	2	$14.43	$28.86	FCP
Exhaust Nut	18301317898	4	$6.35	$25.40	FCP
Exhaust Nut	11621744323	6	$3.07	$18.42	FCP
Shifter Arm Bushing	25111222015	1	$18.61	$18.61	FCP
Autosolutions AutoCross	-	1	$540.00	$540.00	AutoSolutions

This thread has been incredibly helpful as the shop i'm working with to do this job prefers me to supply the parts (seems unusual but not a problem). Can someone walk me through the parts required to rebuilt the detent springs/guides? I see on this list there are several different but similar parts, locking pins, thrust pin, ball, compression springs, + repair kit. I assume in doubt I could just source this exact list of parts and do just fine, but wanted to wrap my head around the design as much as possible. For what it's worth I also picked up an AS AutoCross shifter as well which i couldn't be more hyped about, and i'm comfortable with the implications that kit has on what parts I do vs don't need to think about replacing in the shifter assembly.

[SteelGreyM]

Yeah good point, Terra, I've seen some kits come with the ring kind.

The kind that will NOT work on our car due to SAC mechanism:


The kind you want to make sure was either included in your kit, or that you have, before mounting the clutch/pp is this kind:

Anyone doing this job please read this and avoid yourself a major headache and delay.

Order the 2nd style alignment tool

[mrgizmo04]

This thread has been incredibly helpful as the shop i'm working with to do this job prefers me to supply the parts (seems unusual but not a problem). Can someone walk me through the parts required to rebuilt the detent springs/guides? I see on this list there are several different but similar parts, locking pins, thrust pin, ball, compression springs, + repair kit. I assume in doubt I could just source this exact list of parts and do just fine, but wanted to wrap my head around the design as much as possible. For what it's worth I also picked up an AS AutoCross shifter as well which i couldn't be more hyped about, and i'm comfortable with the implications that kit has on what parts I do vs don't need to think about replacing in the shifter assembly.

You can cross correlate them with realoem.

https://www.realoem.com/bmw/enUS/showparts?id=BL93-USA-07-2005-E46-BMW-M3&diagId=23_0887

Sent from my SM-G950U using Tapatalk

[sapote]

“I could not imagine brass would do so bad where factory was plastic...”

It’s counter intuitive but the latter has less friction than the former which worn out faster.