throw-out bearing rattleing noise?

[gills]

Hey guys,

Just replaced my clutch, pressure plate and throw-out bearing with the exedy clutch kit due to a destroyed throw-out bearing that was in pieces and took a good amount of teeth off the pressure plate as well.

Anyway, before i changed the clutch there was a nice amount of rattling and whining coming from what i thought was the throw-out bearing because when i would push the clutch in the noise would go away. The noise got worse and worse and eventually turned into an unbearable high pitched squeling noise. That's when i stopped driving the car.

Well, it makes a rattling noise now, although obviously not as loud or obtrusive, even with the new clutch kit installed and I was attributing it to the possibility for the need of a new input shaft sleeve that the throw-out bearing sits on. I called Joel from the eurodepot and he said that it's the 4th gear synchro something or other in these transmissions that makes the noise and and goes away when you push the clutch in. He said that it's very common. He compared the noise to a nut in a coffee can shaking around which is about what it sounds like.

I was just wondering if anyone else experiences the same thing and/or had a throwout bearing sieze and break apart on them.

Also, taking the transmission out for the first time on an E30 isn't for the faint at heart or for those that are lacking extensions and universal joints. Not exactly a fun job:crazy: :-D

thanks in advance,

-Tom

[etxxz]

i have the exact same thing going on in my new e30...I also think its the throw out bearing because the noise goes away when i put some pressure on the clutch pedal...no need to sink it.

it also makes the noise when i turn the car off. Anyways, i'm getting ready to drop the tranny and even change the clutch...i hope i can, i took out the tranny several times in a few RWD corollas (tranny is about equal in size but i'm sure the bmw weights a lot more. ae86 tranny = 29kg ~ 6x.x lbs)

but now i'll wait to see what you find out. 4th gear synchro...i dont think so. Someone please post if you have some info. Thanks too
-etxx

[cheades]

Mine does this but only because of a lightened flywheel, that can cause the rattle.

[Jordan]

It's got nothing to do with the clutch. Its your transmission input bearing. They all do it.

A lightweight flywheel will make the chatter louder.

Just live with it, its not worth the time and hassle to have the input bearing replaced.

Your tranny is plenty light. About 70lbs. You'll be fine if you need to drop it.

[gills]

Call www.theeurodepot.com and ask them about the noise. He'll tell you exactly what he said to me. Now i really can't remember what he was said but it was something along those lines.

It seems that this is very common and has nothing to do with the throw out bearing. I was about ready to drop my tranny again to replace the input shaft sleeve but i had a huge sigh of relief when i found out about this.

Regardless, i should've taken pictures of my old thowout bearing and pressure plate. They were destroyed. The noise that it was making was a very high pitched squeal although it didn't start off like that. It sounded kind of what this "normal" noise is but a little more pronounced then moved on to velociraptor dinosaur squeals!:crazy: . Also the clutch pedal was getting very choppy and wooden which is easily attributable to the throwout bearing. If you don't have any of those symtoms i wouldn't worry about it so much.

Tom

[etxxz]

^^no, mine is not that bad, is simply a rattle, as if a heat shield rattling against the exhaust or bottom of car/bolt every now and then

It's got nothing to do with the clutch. Its your transmission input bearing. They all do it.

A lightweight flywheel will make the chatter louder.

Just live with it, its not worth the time and hassle to have the input bearing replaced.

Your tranny is plenty light. About 70lbs. You'll be fine if you need to drop it.

i thought it would because they are similar in size. But if its the imput shaft bearing, wouldn't that rattle be destructive to the transmission? i'll prob have to change the clutch before summer anyways.

(btw* saw your site. your car's wonderful!, being new to bmw you've set some high standarts for me!)

[golde30]

yah i have same problem also. the PO ran the clutch to the ground, still engaged when i got the car , but it was making some HORRIBLE rattling noises, so i took the car to a shop and after opening it up they showed me what used to be the TO bearing, which was now a few slivers of metal. they told be the tranny input shaft had been scarred by the loose chunks of metal, so i would hear the rattling even with the new clutch setup installed.

still bothers the shit outa me, prolly swap out this tranny with my spare when the clutch on this one goes out, which will be soon the way i drive.