Club G40 Forum

Technical => Engine and Transmission => Topic started by: shaun_89 on August 09, 2010, 02:21:18 PM

Title: grinding noise
Post by: shaun_89 on August 09, 2010, 02:21:18 PM
Im getting a metal on metal grinding noise from my g40.
Im thinking its the diff.
The symptons are:
It makes the noise when stationary on around half and more lock.
Doesnt do it when driving in a staright line at any revs or braking but will do it again when getting lock on the steering.
Seems to be worse when reversing too
There is nothing catching underneath too, all driveshafts and arb etc checked

any ideas before i change the gearbox?

Thanks :)
Title: Re: grinding noise
Post by: Yoof on August 09, 2010, 07:56:27 PM
CV got grease in them?
Title: Re: grinding noise
Post by: Robin on August 09, 2010, 08:25:11 PM
its your steering arm on the drivers side touching the inlet manifold, mine does the same.
Title: Re: grinding noise
Post by: shaun_89 on August 10, 2010, 11:09:57 AM
One cv is new and one was fine according to the garage. Will check them though. Would it be the cv joint even if the wheels are not turning?

Its not the inlet, it didnt do it before and has only come on recently but it is getting worse
Title: Re: grinding noise
Post by: JregGT on August 11, 2010, 07:41:07 PM
I get the same as Robin, drivers side steering arm hitting the inlet manifold. WIll physically rock the engine. I am hoping a change in engine mounts may fix it. migfht be worth havung a look at that!
Title: Re: grinding noise
Post by: shaun_89 on August 14, 2010, 06:11:36 PM
The noise also quickens as the revs rise. Even when stationary in neutral  ???
Title: Re: grinding noise
Post by: JIMMYP on August 14, 2010, 07:07:04 PM
if it is a gearbox problem as u say best thing to do first it drop gear oil and c if it comes out a silvery colour. That would indicate that there is grinding going on inside the box. Does it drive ok bar the noise?
Title: Re: grinding noise
Post by: shaun_89 on August 15, 2010, 06:16:38 PM
Yeah drives normal, no whining or anything. Gonna change the gearbox and cv's anyway now. Will see what happens