Throwout Bearing / Strange Noise

[IanB]

Hi All

I have a feeling my throwout bearing on my 90 GTR has gone.

Its making a strange noise when being launched, if I even attempt to slip the clutch it sounds like a giant dragging concrete along on the ground.

It can be heard here:

just as the car launchs

I think its the throwout bearing. How do I fix it? Whats required to get the gearbox off? Is it back-yardable at all or would I be better off saving up until I can afford to pay a workshop to do it?

Regards

Ian

[IanB]

Hmm

A hand would be nice in at least diagnosis, I dont want to have to take the gearbox off only to find it wasnt the throwout bearing at all...

[made_guy]

if you want to take the gearbox out in the backyard - you're gonna need stands on all 4 corners up as high as possible as well as a sturdy trolley jack to take the weight of the gearbox.

Oh and a second person for sure!!

Good 2-3 hour job, but do-able.

edit: that's for a gtst - no idea how much harder it is for a GTR...

Edited March 13, 2008 by made_guy

[IanB]

A group of guys I can do, but this may wind up being done on a hoist. What I need to know is if im looking in the right place...

[JImports]

what does he means by slip the clutch?

[neofenrir34]

that noise does not sound like throw out to me more of a gearbox noise excessive play quite posiably. if there is a there is a throw out noise best way to test. is have car idling turn off music or what ever u may have going. and listen for any noise's then put your foot on the clutch and hear if any of the noise's go away. foot off the clutch (does it come back)? if so throw out noise lots of cars have some form of throw out noise

[nismobdykit]

My cefiro has the noise above and it could be the input shaft bearing i have been told.

Either that or it is a sub shaft..or something. Does it do this in 4th gear?

[neofenrir34]

My cefiro has the noise above and it could be the input shaft bearing i have been told.

Either that or it is a sub shaft..or something. Does it do this in 4th gear?

true it could also be the input shaft bearing

[IanB]

Umm no, once its engaged its fine, only when the clutch comes out or is on its way out or isnt fully engaged (slipping the clutch) will it do this. if the clutch is completly disengaged or completly engaged the car drives without an issue.

[IanB]

any help here? Im kinda desperate, need to diagnose. It sounds horrid if you try and reverse...

[V8skylineMAN]

to be honest, it sound to me like a twinplate. its more than likely just the plates chattering a bit. ive heard/driven many that do it. most of the time its while after the new clutch has bedded in.

Cheers

Jason