Clutch Related Noise.

[Gspec]

Engine running:

Clutch pedal in, no noise.

Clutch pedal fully out, noise.

 

It only makes the noise when the clutch has fully egauged. Partially egauged, no noise.

 

Does it in gear and out of gear.

The noise seems to increase in pitch as the engine speed increases.

 

The noise kind of sound simular to dry bearing spinng fast.

 

The engine in front of it has only just been put there, but I believe it was making the noise with the old engine.

 

The trans has plenty of oil.

 

Any ideas as to what could be making this noise?

 

Oh yeah... its a T18 with a 3TC and T50.

Edited April 26, 2010 by Gspec

[Evan G]

thrust bearing?

[Trev]

Throw out bearing will do that.

[jono1986]

Spigot bearing?

[LowVp]

my v6 was doing this and it was a throw out bearing

[Gspec]

Thrust bearing and spigot bearings were my first 2 thoughts.

 

In my experience thrust bearings and spigot bearings usually make noise when the clutch is pushed not when its released.

 

Pushing the pedal pushes the thrust bearing into the pressure plate, releasing the the clutch disc therefore making the spigot bearing take load of the gearbox shaft.

 

However cars are crazy things and sometime logic does not enter into the equation.

 

:wink:

[LittleRedSpirit]

Thrust bearing and spigot bearings were my first 2 thoughts.

 

In my experience thrust bearings and spigot bearings usually make noise when the clutch is pushed not when its released.

 

Pushing the pedal pushes the thrust bearing into the pressure plate, releasing the the clutch disc therefore making the spigot bearing take load of the gearbox shaft.

 

However cars are crazy things and sometime logic does not enter into the equation.

 

:wink:

 

 

I have fixed this problem before with a new clutch master, mine was leaking and when I swapped it the squeaky noise stopped. I can't really explain why, but this worked for me. I replaced it because it was leaking, and the loss of the squeaky noise was a nice bonus.

[Evan G]

it could also be the thrust bearing has worn into the spring fingers

[Trev]

Thrust bearing and spigot bearings were my first 2 thoughts.

 

In my experience thrust bearings and spigot bearings usually make noise when the clutch is pushed not when its released.

 

Pushing the pedal pushes the thrust bearing into the pressure plate, releasing the the clutch disc therefore making the spigot bearing take load of the gearbox shaft.

 

However cars are crazy things and sometime logic does not enter into the equation.

 

:wink:

 

The noise you hear is from worn and grooved bearings, Pushing the clutch in loads the bearing and the pressure removes the noise, When the clutch is released the bearing has play and shifts around so you get the noise, Think of it as a wheel bearing that needs adjusting.

 

Also the spigot bearing is there to remove sideways movement, It does not take a forward load.

[Taz_Rx]

And the spiggot bearing won't be turning when the clutch is depressed as the input shaft isn't turning.

 

It could also be the input shaft bearing in the gearbox.

[Gspec]

it could also be the thrust bearing has worn into the spring fingers

 

Worn into? There is a wear groove in the fingers.

 

The noise you hear is from worn and grooved bearings, Pushing the clutch in loads the bearing and the pressure removes the noise, When the clutch is released the bearing has play and shifts around so you get the noise, Think of it as a wheel bearing that needs adjusting.

 

I reckon you're right with this one.... as Its the line of thought I was going with :)

 

Also the spigot bearing is there to remove sideways movement, It does not take a forward load.

 

I certanly hope it doesn;t take forwards load, if it did the thrust bearing would be the least of my worries :lol:

 

And the spiggot bearing won't be turning when the clutch is depressed as the input shaft isn't turning.

 

It could also be the input shaft bearing in the gearbox.

 

Although I reckon its the thrust bearing, I haven't rues ethis one out as it doe sound feasible

[Trev]

Worn into? There is a wear groove in the fingers.

 

 

 

I reckon you're right with this one.... as Its the line of thought I was going with :)

 

 

 

I certanly hope it doesn;t take forwards load, if it did the thrust bearing would be the least of my worries :lol:

 

 

 

Although I reckon its the thrust bearing, I haven't rues ethis one out as it doe sound feasible

 

When you pull the box out just check for back and forth movement on the input shaft, There will be sideways movement on the shaft.