Grinding noise..

[Pongo]

Hi All,  Looking for some advice on a developing noise. Best way I can describe it is a rubbing/grinding/rattle as I turn left under power, sounds to be coming from directly infront, but low, of the driver. I changed the CV joint at the weekend but this hasn't resolved it. My dad (a mechanic) fears it may be the gearbox or diff bearings?! This sounds like a pain in the asse and expensive. Anyone have other ideas I could pursue first?

Oh and its an '88 gti 8v 147K

Thanks

Matt

[The Mighty Elvi]

Which side did you change, and did you grease it?

Have you checked your wheel bearings?

[Pongo]

Thanks for replying..

I've now changed both CV joints. Haven't looked at wheel bearings.. It only happens when turning left, wouldn't wheel bearings be more of a constant noise?

[jezza16v]

The rear engine mount is down there. It may be past its best if still the original. This can go metal to metal under sideways forces, worth a look at least.

[sparkplug]

 i take it you changed both outside CV joints ?
have you checked the inner ones ?


or try jacking up one side at a time then spin it by hand to see if you can locate the sound
move the wheel through the turning arc too

[Pongo]

Yeah I've changed both outer CV joints. How do I go about checking inner ones?

[Sam]

Yeah I've changed both outer CV joints. How do I go about checking inner ones?

Get under there and have a check for splits on the boots. I also assume you absolutely rammed the new cvs with molly grease?

[Pongo]

Yeah, absolutely ramma dam dammed them with the stuff. I replaced both outer CV's (and boots) in an attempt to cure the noise. It was there before I replaced them.

[Sam]

Yeah, absolutely ramma dam dammed them with the stuff. I replaced both outer CV's (and boots) in an attempt to cure the noise. It was there before I replaced them.

Did you check the inners for splits too? 

[ians]

my rear inner wheel bearing needs replacing it goes quiet when turning into corners on the opposite side