[austin.tillison]

Pulled my 6 speed transmission out of my 2006 325i e90 to address a whining noise I've been hearing for some time. Decided to service the clutch while I'm in there and was hoping I'd get by without having to touch the flywheel but I'm afraid it might need replacing too. What do y'all think?









Looking at about $600 for a new flywheel. is this one toast and worth replacing? Please let me know, thanks!

[Welcome to NBA Jam]

There are a lot of hot spots on there. I'd say so. The other aspect are the internal springs wearing out with a DMF, creating excess play and noise later on. It's easier to do now than redo it again later. You'll thank yourself in the long run.

If it's not worn out internally, there are specialized companies that know how to machine a DMF. That could be an option.

[austin.tillison]

Originally Posted by Welcome to NBA Jam

There are a lot of hot spots on there. I'd say so. The other aspect are the internal springs wearing out with a DMF, creating excess play and noise later on. It's easier to do now than redo it again later. You'll thank yourself in the long run.

If it's not worn out internally, there are specialized companies that know how to machine a DMF. That could be an option.

thanks for the feedback. i forgot to mention the car has 180k miles on it.
I'm thinking it might just make sense to put a brand new dmf in there just to have the peace of mind that i hopefully won't have to pull the transmission any time again soon lol

[Welcome to NBA Jam]

Originally Posted by austin.tillison

thanks for the feedback. i forgot to mention the car has 180k miles on it.
I'm thinking it might just make sense to put a brand new dmf in there just to have the peace of mind that i hopefully won't have to pull the transmission any time again soon lol

Oh yeah, at 180k miles I'd say it's due for a replacement. I'm at 110k on my original clutch and am expecting it to wear out in the next year or so and definitely plan on replacing the flywheel.

[austin.tillison]

Originally Posted by robthewrench

Did you clean it before the picture? Unless you think it is warped or otherwise damaged, I would clean it well, and then maybe think about re-surfacing it, but not replace it.

Two options to resurface it: 1) DIY with light abrasives, 2) Remove it and take it to a machine shop.

You should replace the pressure plate.

I haven't cleaned it yet, I just rubbed my hand over it. I have a new clutch kit with a new clutch disc and pressure plate so that will be replaced

Originally Posted by Welcome to NBA Jam

Oh yeah, at 180k miles I'd say it's due for a replacement. I'm at 110k on my original clutch and am expecting it to wear out in the next year or so and definitely plan on replacing the flywheel.

yeah I'm surprised I haven't had any clutch issues. The clutch I pulled out of the car appears to be oem bmw and I'm guessing it might be the original clutch. I bought the car used with 90k on it and I've put another 90k on it and it still shifts super smooth. But while I've got the trans off servicing the throw out bearing I figured it only makes sense to do the clutch and flywheel

[hassmaschine]

dual mass flywheels unfortunately do not last forever. You could also go with a single mass flywheel, it weighs the same amount so it shouldn't change anything too much but they do cost less and it should outlast the vehicle.

[Efthreeoh]

My DMF stopped dual-massing around 230,000. I replaced it at 293,000 with along with a new clutch kit. If you're in there, put a new flywheel in is my recommendation.. Also, did you look at the throwout bearing guide? It's probably worn on one side; you should replace that too. The clutch lever pin is Delrin plastic and should be okay. I replaced mine, but it really didn't need it. You can punch it out from the outside of the bell housing.

Also, who in hell has been driving that car? The flywheel surface looks totally FBAR. No offense meant....

[austin.tillison]

Originally Posted by hassmaschine

dual mass flywheels unfortunately do not last forever. You could also go with a single mass flywheel, it weighs the same amount so it shouldn't change anything too much but they do cost less and it should outlast the vehicle.

I was curious if converting to a single mass flywheel would change the feel of the shifting. I did notice it cost less than the DMF so i'm considering it

Originally Posted by Efthreeoh

My DMF stopped dual-massing around 230,000. I replaced it at 293,000 with along with a new clutch kit. If you're in there, put a new flywheel in is my recommendation.. Also, did you look at the throwout bearing guide? It's probably worn on one side; you should replace that too. The clutch lever pin is Delrin plastic and should be okay. I replaced mine, but it really didn't need it. You can punch it out from the outside of the bell housing.

Also, who in hell has been driving that car? The flywheel surface looks totally FBAR. No offense meant....

yeah I'll probably do it. I'm doing the throwout bearing too! The clutch kit came with a new one.

Haha no offense taken. I always thought I was a decent manual driver, I don't know why it's so burnt up. I've done a few clutch jobs on various cars and haven't seen one this bad til now lol

[nuron]

Originally Posted by austin.tillison

But while I've got the trans off servicing the throw out bearing I figured it only makes sense to do the clutch and flywheel

Was your car rattling and clunking during idle, and the noise goes away when you press in the clutch?

[Welcome to NBA Jam]

Originally Posted by austin.tillison

I haven't cleaned it yet, I just rubbed my hand over it. I have a new clutch kit with a new clutch disc and pressure plate so that will be replaced




yeah I'm surprised I haven't had any clutch issues. The clutch I pulled out of the car appears to be oem bmw and I'm guessing it might be the original clutch. I bought the car used with 90k on it and I've put another 90k on it and it still shifts super smooth. But while I've got the trans off servicing the throw out bearing I figured it only makes sense to do the clutch and flywheel

Well damn that would be impressive and really good news for me if that's true! I'd like to hold off on replacing the clutch as long as possible.

[austin.tillison]

Originally Posted by nuron

Was your car rattling and clunking during idle, and the noise goes away when you press in the clutch?

When the i press the clutch the transmission was relatively quiet but when the car is in gear and cruising down the road i hear a grinding noise

[austin.tillison]

this part came with my clutch kit and I'm not sure where it goes. does any one know?





also my new flywheel already has one of these bearings pressed in so I don't need to replace it right?

[Efthreeoh]

If you got the LUK DMF, it comes pre-loaded with the pilot bearing, and those two extra bearing/sleeves for cars other than the N52. I installed my clutck kit and DMF with the pre-loaded pilot. Been smooth as silk for 72,000 miles.

[BravoJohny33]

Originally Posted by Welcome to NBA Jam

Oh yeah, at 180k miles I'd say it's due for a replacement. I'm at 110k on my original clutch and am expecting it to wear out in the next year or so and definitely plan on replacing the flywheel.

The manufacture of the flywheel says they are good for 2 clutch changes. So right under 300k sounds about right.

[austin.tillison]

Originally Posted by Efthreeoh

If you got the LUK DMF, it comes pre-loaded with the pilot bearing, and those two extra bearing/sleeves for cars other than the N52. I installed my clutck kit and DMF with the pre-loaded pilot. Been smooth as silk for 72,000 miles.

yeah I did the LUK DMF and LUK Clutch Kit
I just wanted to make sure I had replaced all the necessary parts before reassembling.
Good to know! Thanks for the feedback!!

[austin.tillison]

Sorry for all the questions!
Does this bearing guide need to be replaced?
It still seems perfectly round, just has some wear marks on the outside.

[Efthreeoh]

Originally Posted by austin.tillison

Sorry for all the questions!
Does this bearing guide need to be replaced?
It still seems perfectly round, just has some wear marks on the outside.

So long story I'll not bore you with... but I did not get the throwout bearing guide sleeve to replace when I did my clutch. I did mine over New Year's weekend, so there was no place for me to fetch one when I discovered I didn't order the part. On the 325i you can just rotate the sleeve 180 deg.; mine was worn on just one side. The 330i can't be flipped; I'm not sure which car you have. I replaced the one in my wife's Z3, and I think it is good practice to. If you can't wait for the part, then it is reusable.

[austin.tillison]

Originally Posted by Efthreeoh

So long story I'll not bore you with... but I did not get the throwout bearing guide sleeve to replace when I did my clutch. I did mine over New Year's weekend, so there was no place for me to fetch one when I discovered I didn't order the part. On the 325i you can just rotate the sleeve 180 deg.; mine was worn on just one side. The 330i can't be flipped; I'm not sure which car you have. I replaced the one in my wife's Z3, and I think it is good practice to. If you can't wait for the part, then it is reusable.

it's such a cheap part, i wish i had remembered to just order it and change it

but that's good to know! I cleaned it up with brake parts cleaner and I'll flip it

thanks!

[austin.tillison]

So guys, I have the trans and shifter linkage all reinstalled and I ended up doing a new clutch master cylinder and clutch slave cylinder. My clutch pedal has no pressure in it and it just goes straight to the floor. I've tried bleeding it and I'm getting steady fluid all the way out of the bleeder screw on the slave but still no pressure. Any ideas what it could be?

[Bufalo]

Is the lever engaged with the throw out bearing and in contact with the slave cyl piston? Do you have a second person who can either pump the pedal or watch the mechanisms at the same time?

[Efthreeoh]

How are you trying to bleed it? I've bled several clutches on several different cars. On my E90 it would not bleed any other way but with using a pressure bleeder. It would not bleed using the pump method (i.e. another person pumping the pedal), and it would not vacuum bleed. I ended up getting a Motive pressure bleeder, and I had it bled in 5 minutes. IMO, and I don't know why, but the E90 clutch needs a pressure bleeder to get the air out of it. Can't explain why that is so, but that was my experience with it.

[austin.tillison]

Originally Posted by Bufalo

Is the lever engaged with the throw out bearing and in contact with the slave cyl piston? Do you have a second person who can either pump the pedal or watch the mechanisms at the same time?

I'm gonna try and get my buddy to look at it with me this week
it looks like the lever and throwout bearing are moving freely but the new slave cylinder isn't sliding back and forth. is it possible it could still be locked in shipping position?

Originally Posted by Efthreeoh

How are you trying to bleed it? I've bled several clutches on several different cars. On my E90 it would not bleed any other way but with using a pressure bleeder. It would not bleed using the pump method (i.e. another person pumping the pedal), and it would not vacuum bleed. I ended up getting a Motive pressure bleeder, and I had it bled in 5 minutes. IMO, and I don't know why, but the E90 clutch needs a pressure bleeder to get the air out of it. Can't explain why that is so, but that was my experience with it.

Ah damn okay, maybe i need to buy a pressure bleeder. thanks for the feedback!