Strange grinding noise

[Whitetac]

Coming(I think) from passenger side of the front end, it's not overly loud but when stationary and revving it gets more noticeable as the revs get higher. What could this be?! I did try to make a video of the sound but my phone doesn't pick it up very well over my engine noise!

 

[MicKPM]

Hard to say without seeing/hearing but i suspect clutch/DMF. With the engine running try pressing the clutch pedal slightly and hold it for a few seconds. Noise gone? If so its possibly the slave cylinder but if not try pressing it all the way... does the noise go?

Mick

 

[Whitetac]

Clutch was changed about 2k ago, along with a gearbox refurb. Im pretty sure the noise is the same regardless of whether the clutch is pressed or not, but i will double check when I get to my car later on! Thanks for the reply Mick

 

[DannyR]

Slave cylinder? Cable clutch on the Cup =\

 

[MicKPM]

For some reason i thought he had a 197... sorry, brain farted. I would still try the pedal test to rule out thrust bearing noise.

Mick

 

[Whitetac]

I tried pressing the clutch but it makes no difference to the noise, still get more noticeable as the revs get higher!

 

[DannyR]

Could be the end of your driveshaft fucked could mean new gearbox!

 

[Whitetac]

The gearbox has just been refurbished though? Could it still be fecked? how could I tell if it's the driveshaft? Thanks for the replies as well

 

[DannyR]

Jack car up

Take off passenger side wheel.

You'll need to drain your gearbox oil.

Undo the driveshaft nut, 30mm

Take off two 21mm nut/bolts that hold hub to shock

Undo 3 13mm bolts holding driveshaft gaiter onto the gearbox

Then try and wangle out, may need a little tap, but don't directly hit the end of the driveshaft.

When out you should have 3 bearings on the gearbox end, these can sometimes explode and go everywhere causing grinding noises

It may not be that at all but there isn't much that would cause a noise similiar to what you describe

 

[Whitetac]

Thanks DannyR, I'll get the driveshaft out on my next day off and see if there's any obvious damage. How much would a replacement cost? It's been making the noise for a while, but as my gearbox was whining I couldn't hear it until about 2 months ago. is it one day going to break all together and not work?

 

[DannyR]

If one of the bearings have come off it will more than likely shag your gearbox, but if it done it before I'd hope the garage would of seen it damaged?