Whats this noise?

[PurpleSpaceShip]

Originally Posted by NyX_Nick

That's TOB. Mine is doing the same thing at 112k km, and I'm getting ready to replace it soon. Would be worthwhile to upgrade the clutch fork while you're in there too

What are some other symptoms of bad clutch fork? mines seems to go in neutral rather uncomfortably from 4th gear. you know it does not feel notch y and satisfying like other gears.

[Tcoat]

Originally Posted by churchx

Imho it's not that common to these cars, as looks rather generic for TOB, as rather these cars more commonly are abused, clutch & it's TOB included

It is very common with these cars. The first version of the TOB was not properly lubricated and this lead to premature failure. The new part number is the exact same bearing but with improved lubrication. It is a known issue with a TSB released to address it not just a matter of abuse.

[Joesurf79]

Originally Posted by Tcoat

It is very common with these cars. The first version of the TOB was not properly lubricated and this lead to premature failure. The new part number is the exact same bearing but with improved lubrication. It is a known issue with a TSB released to address it not just a matter of abuse.

100% this ^^


The revised PN is around here somewhere... I ordered 3 to have a couple on hand.

[Tcoat]

Originally Posted by Joesurf79

100% this ^^


The revised PN is around here somewhere... I ordered 3 to have a couple on hand.

Gotta love how Subaru blames the driver!







If done soon enough the bearing is cheap.
https://parts.toyota.com/p/Toyota_20...U00307349.html

[Joesurf79]

Originally Posted by PurpleSpaceShip

My problem with TOB diagnosis is that i actually have a "new" gearbox. i bought of some guy from facebook. its supposed to be 8k milage 2015 brz gearbox. and i also installed new Exedy OEM replacement clutch kit. if that really is TOB thats making the noise the mechanic must have installed it improperly. idk man.

All I know, is there are a lot of unknowns in these sentences ^^. But the sound - which granted has been diagnosed by strangers through a youtube sound clip - seemingly points to a known, factory acknowledged by TSB problem.


The Exedy clutch kit I put in came with and identical NTN bearing to the original that died. Same Japanese origin stamping, NTN stamp etc. The new PN has the white paint dot, that the clutch kit bearing did not have.


Knowing that the clutch was recently removed and replaced, just makes it more likely in my mind to it being related to that system in some way. Not pointing the finger at the mechanic, just saying recent system disassembly and the occurrence of symptoms immediately following, are more than likely related.


Good luck purplespaceship! Do you know if the tube the TOB rides on was damaged at all when the new clutch went in? Was it cleaned and greased properly upon install?

[Tcoat]

Originally Posted by Joesurf79

All I know, is there are a lot of unknowns in these sentences ^^. But the sound - which granted has been diagnosed by strangers through a youtube sound clip - seemingly points to a known, factory acknowledged by TSB problem.


The Exedy clutch kit I put in came with and identical NTN bearing to the original that died. Same Japanese origin stamping, NTN stamp etc. The new PN has the white paint dot, that the clutch kit bearing did not have.


Knowing that the clutch was recently removed and replaced, just makes it more likely in my mind to it being related to that system in some way. Not pointing the finger at the mechanic, just saying recent system disassembly and the occurrence of symptoms immediately following, are more than likely related.


Good luck purplespaceship! Do you know if the tube the TOB rides on was damaged at all when the new clutch went in? Was it cleaned and greased properly upon install?

Yes, information such as a tranny swap is important to give up front when asking the question but it doesn't change the fact that the clip sounds EXACTLY like the start of a TOB going bad. With the new info it could of course be anything but I am sticking to my first thoughts.

[Zoid]

Originally Posted by jfarkas

Hey @Tcoat, I replied in another thread for this sound from OP; I'll be at the dealership the next 2 days for fuel pump replacement as well as having this noise checked out. Originally thought input shaft but now leaning towards TOB. Since this noise way my original reason for being there, should I just pay for a clutch/TOB replacement while im there?
They told me anything clutch-related is out the window for warranty since 3/36k is up. Noise goes away after warmup so i'm leaving it overnight tomorrow so they can coldstart it and hear the whine. Would TOB do that, and about how much should I expect for a clutch/TOB job?

The dealership quoted me $1300-$1800 depending on how bad it was when I went in for my TOB/clutch fork. They insisted changing out the entire clutch while they were in there, which definitely makes sense but at those prices I took my keys and ran.

I bought the Exedy OE clutch kit, a new OEM clutch fork, and the updated Toyota TOB for $342 and my mechanic charged me $500 for labor. I suggest doing the same.

My pressure plate also looked like this, but slightly worse, and my clutch fork was full of metal shavings. The clutch wasn't looking too hot either. My TOB was probably a thousand miles or so away from complete failure. I wish it had occurred to me to take pictures but it was hot when I went to pick up my car and I was tired. In any case, don't put this off people!

[RallySTI]

Originally Posted by PurpleSpaceShip

My problem with TOB diagnosis is that i actually have a "new" gearbox. i bought of some guy from facebook. its supposed to be 8k milage 2015 brz gearbox. and i also installed new Exedy OEM replacement clutch kit. if that really is TOB thats making the noise the mechanic must have installed it improperly. idk man.

Since the clutch and bearing were replaced recently another possibility is that the mechanic did not press in the pilot bearing correctly or damaged it by pressing it into the flywheel. If the dust shield is damaged on the pilot bearing it will make a noise like you have in the video.

If it is the release bearing the tone of the noise would change when the clutch pedal is depressed. When the clutch is disengaged the release bearing is under load from the diaphragm spring and if the bearing is the source of the noise it should change.

[PurpleSpaceShip]

Originally Posted by RallySTI

Since the clutch and bearing were replaced recently another possibility is that the mechanic did not press in the pilot bearing correctly or damaged it by pressing it into the flywheel. If the dust shield is damaged on the pilot bearing it will make a noise like you have in the video.

If it is the release bearing the tone of the noise would change when the clutch pedal is depressed. When the clutch is disengaged the release bearing is under load from the diaphragm spring and if the bearing is the source of the noise it should change.

damaged pilot bearing means new flywheel? am i right?

[Tcoat]

Originally Posted by PurpleSpaceShip

damaged pilot bearing means new flywheel? am i right?

Really bad one does. Has to be pretty bad. My TOB was about as bad as they can get but the flywheel just needed resurfacing. With the light sounds from the video I doubt that you would need anything more than just the bearing.

[PurpleSpaceShip]

Originally Posted by Tcoat

Really bad one does. Has to be pretty bad. My TOB was about as bad as they can get but the flywheel just needed resurfacing. With the light sounds from the video I doubt that you would need anything more than just the bearing.

can i order the pilot bearing through dealership? how much would that cost? OEM replacement of flywheel is around $200 if im not mistaken

[Tcoat]

Originally Posted by PurpleSpaceShip

can i order the pilot bearing through dealership? how much would that cost? OEM replacement of flywheel is around $200 if im not mistaken

You can or you can order online. They are not expensive.
https://parts.toyota.com/p/Toyota_20...U00307349.html


No idea what a flywheel costs but if it is torn up then the rest of the clutch will be as well.

[PurpleSpaceShip]

Originally Posted by Tcoat

You can or you can order online. They are not expensive.
https://parts.toyota.com/p/Toyota_20...U00307349.html


No idea what a flywheel costs but if it is torn up then the rest of the clutch will be as well.

the item in the link, thats throw out bearing, isnt it?

[Tcoat]

Originally Posted by PurpleSpaceShip

the item in the link, thats throw out bearing, isnt it?

Ooops sorry. I didn't read well enough.
The shaft bearing is not likely your issue since your noise goes away when you push the clutch. It is also impossible for it to touch the flywheel.