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Clutch or Thrust Bearing?

Jay95R33
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Miss*33 Rising Star

Miss*33

Posted
Posted
Originally posted by PuppaDuck

Having a similar problem when I reverse some times...

getting a whiring noise while the clutch is half way out...

put it all the way out, or back in, and it goes away...

totally random for over 3 years...no problems

how much are thrust bearings ?

and is it something that is good to get done when the clutch is out anyway ?

Mine does the same thing as PuppaDuck's, but only very rarely.

It the thrust bearing definitely the cause of this? Cos if it is, I want to get it changed, its sooo annoying when it does it!

  • 1 year later...
wilch Grand Master

wilch

Posted
Posted
This might help.....thrust bearing noise will only be evident when the clutch is engaged i.e. pedal depressed. So if you got the wirrrrrr before the pedal is down look at input bearing in gearbox.

Isn't this the opposite of what the other guys are saying? I'm confused....

My car also makes this clutch noise. It's noisey (whiring noise) when the clutch is out. Push the clutch in though and the noise goes away. So this isn't the thrust bearing?

wil..

Cubes Grand Master

Cubes

Posted
Posted

I have a loud input shaft bearing...

I also get the gruuuurrrr noise mostly when it is cold and i'm riding the clutch very first thing in the morning. Generally on reversing as this requires the most clutch slip.

Its only every now and again though. I dip the clutch then reslip and it most of the time goes away.

Generally if its an input shaft bearing you will hear it spin down after you have pressed the clutch in fully. A thrust bearing wirr will stop instantly upon pressing the clutch.

R31_GTSX Rising Star

R31_GTSX

Posted
Posted

The thrust bearing is located in the bell housing attached to a release lever . This lever is the one you see protruding out the side of the bell housing which is activated by the clutch slave cylinder ie clutch pedal..

Thrust bearing is not spinning until the clutch pedal is pressed. When the clutch pedal is pressed the release lever forces the thrust bearing against the clutch plate fingers.

In neutral the thrust bearing is not spinning, it only spins when the clutch pedal is pressed. If when you push the pedal down the noise disapears it is not a thrust bearing noise. Therefore if you have a noise in nuetral with clutch out its not a thrust bearing noise because the thrust bearing is not spinning.

A wirring noise in neutral in the RB gearbox is commonly found to be the input shaft bearing.

Parts available at Nissan Dealers.. this is a gearbox open job.

R31_GTSX Rising Star

R31_GTSX

Posted
Posted

Sorry...this is becoming a saga. Just to affirm the input bearing noise,here is proof.When the clutch pedal is pressed this disengages the gearbox ( via the clutch ) from the engine.At this point the gearbox input shaft is not spinning, so there will be no wirrr from the gearbox input bearing shaft while the clutch is in.

PuppaDuck Collaborator

PuppaDuck

Posted
Posted

Noise issue revisited:

I had the spigot bush, thrust bearing and clutch changed.

The quiet whirring noise was still there when you leave the clutch out, but the scary noisy whirring disappeared.

A few months on and I get the loud whirring noise every cold winter morning when I start the car. Almost like there is no oil in the car, or the oil hasn't warmed up yet.

Then I start noticing that the noise only happens when I downshift into 2nd mostly, but also down to 3rd as well.

Also, it seems to happen when I push the clutch ALL THE WAY IN.

The clutch does its job when you push it in a little, but I still push it further down for completeness. So this is when the bad whirring noise happens.

After seeing my mates new Honda Accord Euro, I had to drive home tonight disappointed in my crunchy whirry Skyline.

Felt like retiring and getting a new luxury auto - but only for about 5 minutes.

  • 1 month later...

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