squealing trans/clutch

**jetaws6** · 12-24-2010, 09:22 AM

Well I just reinstalled another monster stage 3 clutch after the first one broke under warrenty after 800 mi.

Once I started it I let it idle for about 10 minutes then took it on the road and drove fine for the first mile or so and then something started squealing inside the the bell housing or trans.

I shut the car off looked under it to make sure nothing was leaking started it up and it didnt make a noise for about ten seconds and then it started again.

Anybody have a suggestion? I know some people say beat on it becuase its glazed but its a brand new clutch

**jetaws6** · 12-24-2010, 09:27 AM

It also only happens when I am in neutral, idling, or the the clutch is engaged

**Cutlass** · 12-24-2010, 06:43 PM

maybe the slave isn't fully released and the throwout bearing is just barely touching the pressure plate.

**Wesman** · 12-26-2010, 04:35 PM

Originally Posted by Cutlass

maybe the slave isn't fully released and the throwout bearing is just barely touching the pressure plate.

Isn't the TOB in constant contact with the diaphram fingers on a concentric slave design??

It really has to be because the slave is spring loaded....

Correct me if I'm missing something there, you're on the mark 99.9% of the time lol

**jetaws6** · 12-27-2010, 01:06 PM

I guess theres no way of testing it?

**35th-ANV-SS** · 12-27-2010, 01:12 PM

I am pretty sure the TOB only touches the fingers when the clutch pedal is depressed.

**jetaws6** · 12-27-2010, 03:26 PM

Thats from tick

If it happens when the pedal is pushed in it could be the pilot bearing or the throw out bearing. The throw out bearing is in constant contact with the pressure plate, but it sees the most pressure when the pedal is pushed in. The pilot bearing only sees action when the pedal is pushed in....when the pedal is up the crankshaft in the engine, the clutch, and the input shaft all turn the same speed. If the clutch disk itself is causing the sqeal, it should happen just as the clutch pedal comes up, or just when it begins to engage.

**Cutlass** · 12-27-2010, 04:23 PM

Originally Posted by Wesman

Isn't the TOB in constant contact with the diaphram fingers on a concentric slave design??

It really has to be because the slave is spring loaded....

Correct me if I'm missing something there, you're on the mark 99.9% of the time lol

Yeah I think your probably correct. So I guess for my theory to be valid, there would have to be a little more then the light pressure the slave spring.

**jetaws6** · 12-27-2010, 07:15 PM

so you guys know whats goin on but im kinda lost lol whats the diagnosis

**jetaws6** · 12-28-2010, 04:23 PM

monster wanted a video of it so I thought I might as well post it up here to

[ame]http://www.youtube.com/watch?v=spLBbD-BFwc[/ame]

**Cutlass** · 12-28-2010, 06:24 PM

I've watched it 5 times now, and I'm not sure. Its pretty loud under the hood, but it could still be in the bellhousing area I suppose.
One time I thought it was a whistle like a strange vacuum leak whistle, but I'm backing off that idea.
Another time I thought it was throwout bearing or something rubbing on the flywheel. Or maybe a bearing in the transmission.
Does the noise go away when you hold the clutch pedal to the floor?

**jetaws6** · 12-28-2010, 06:58 PM

the noise only goes away when I am driving. It might be a loud belt or a bad tensioner. Its not a vacum because my heat works. Im thinking it might be the pilot

**jetaws6** · 12-29-2010, 01:49 PM

Pulled the belts off and it still made the sound so its not a pulley. I think it may be something up front now taking another listen to it today

**35th-ANV-SS** · 12-29-2010, 03:22 PM

Almost sounds like a bad pulley to me, like the bearings gone bad and are squealing.

**jetaws6** · 12-29-2010, 03:52 PM

I took the belt off but I guess it could be the harmonic balencer. It takes a while for it to happen though like the motor has to be warmed up

**Cutlass** · 12-29-2010, 05:44 PM

Originally Posted by jetaws6

Im thinking it might be the pilot

The pilot would only make noise with the clutch pedal pushed in.

Video looks like its noisiest on the drivers side of the engine, maybe? And it goes away under load at higher RPMs? Hmmm...

What are all your mods?

**jetaws6** · 12-29-2010, 07:18 PM

heads cam w/supporting mods and it seems like its the passenger side. short block had 100k on it when the mods were done

**Cutlass** · 12-30-2010, 05:59 PM

First thought, is the starter stuck out and still engaged to the flywheel?...but that can't be because it happens when it warmed up and goes away under load.
Second thought, AC compressor? Did you take off both belts or just the main serp belt?
Any other symptoms besides the noise? Hard starting? Difficult shifting? Any rough running issues?

Just thinking out loud here....