Hi all,

 

I am still trying to crack this little problem with my new Zed.

 

I have got wurring noises from the rear and vibrations coming through my seat.

 

I have visited my local mechanics and he thinks it might well be a rear wheel bearing as the vibrations don't get any better when the car is put into neutral and no vibratations could be felt when I put my hand on the transmission tunnel.

 

I was also told that I had had a new gearbox mounting bracket. Something else I know can be a cause of vibrations. This surely eliminates a dodgy mounting bracket though?

 

The mechanic is sure it is a rear wheel bearing. I am not convinced though as I am not sure that this would cause vibrations through my seat? Anyone had vibrations like this from worn wheel bearings?

 

Cheers,

 

Justin

Cant see a rear wheel bearing causing this - one of mines on its way out, and its a bit noisy - but thats about it. What about rear diff or prop shaft bearing? Although having said that my prop bearing was shagged when I got my car and it didnt make the seats vibrate....

Cant see a rear wheel bearing causing this - one of mines on its way out, and its a bit noisy - but thats about it. What about rear diff or prop shaft bearing? Although having said that my prop bearing was shagged when I got my car and it didnt make the seats vibrate....

 

Cheers Adam,

 

I think personaly that it is something like the prop. I just don't want to do the prop then find out it was something else. I guess if it had a new gearbox mount then it might have meant that extra strain was put on the bearing whilst the old mount was making the prop sag?

 

Justin

If the prop centre bearing is original then it will be well sagged and the rubber mount persished. Search on it here - loads of opinions. Certainly got to be a favourite and if its been gone a long time then the actual universal joints on the shaft could also be on the way out too.

 

Feeling it through the seat a give away and also a new gearbox mount would make the angle of sag worse on a sagged centre bearing than before the gearbox mount was fitted.

If the prop centre bearing is original then it will be well sagged and the rubber mount persished. Search on it here - loads of opinions. Certainly got to be a favourite and if its been gone a long time then the actual universal joints on the shaft could also be on the way out too.

 

Feeling it through the seat a give away and also a new gearbox mount would make the angle of sag worse on a sagged centre bearing than before the gearbox mount was fitted.

 

Good point Willie,

 

Looks like I better look into getting the prop bearing done then.

 

More money :cry:

 

LOL

 

Justin

Have a good look at your tyres too.

Justin,

I have the "typical" Z vibration in the seat at about 30 - 50 mph, especially when cold. I replaced the rear gearbox mount, which did nothing to eliminate the vibrations. I compared the new gearbox mount to the old, and frankly, the old looked as good as the new, no sagging, no deterioration of the rubber. I doubt in your case that its the gearbox mount. Several people on this forum have replaced the gearbox mount and found it did not solve the vibration, which was only cured when the prop shaft centre bearing was replaced. Mine will have to be done soon.

 

Cheers,

 

John

Cheers guys,

 

Does anyone know how much money I can expect to pay out to get this done? Say working on about £40 per hour.

 

Justin

I think Jeff at Zedworld charges about £280......bearing itself costs a bundle, probably £160 just for the bearing. Check his website, http://www.zedworld.co.uk

 

John

I think Jeff at Zedworld charges about £280......bearing itself costs a bundle, probably £160 just for the bearing. Check his website, http://www.zedworld.co.uk

 

John

 

Damn,

 

That's a fair bit of cash!

 

Does anyone know if it is possible to buy the bearing from the States to maybe keep the price down a bit?

 

Justin

There is an easy test for this mate! It sounds like your mechanic is right. If you want to eliminate anything transmission related (i.e. rear mount, propshaft, etc), just put your foot on the clutch! If it's still there, it's nothing to do with the transmission. If you want to eliminate anything from the engine backwards, turn it off! You'll obviously lose power steering, etc, so make sure you're safe and ready to bump start it again.

 

But forget anything to do with propshafts, transmission, etc, if it doesn't go away with the clutch in.

Oh yeah, and to be honest, you probably just need to get your wheels balanced.

Oh yeah, and to be honest, you probably just need to get your wheels balanced.

 

Thanks MIke,

 

I am hoping it is nothing to do with the prop. I do still have alot of wurring noise going on. I guess this is most probably the rear wheel bearings as my Mechanic figured.

 

My rtracking is ever so slightly out aswell. Guess this would not help matters. If I get the wheels tracked will I need to have a complete 4 wheel track seeing the Zed steers with all four?

 

Justin

Justin,

These vibrations, do they occur mainly between 30 and 50 mph ? This wurring sounds like mine, defintely metallic, not wheel bearings, I had all my wheels balanced, still the vibration.

If the vibration goes away accelerating up from 50 to lets say 70, its not the wheel bearings, its your prop shaft.

 

John

Justin,

These vibrations, do they occur mainly between 30 and 50 mph ? This wurring sounds like mine, defintely metallic, not wheel bearings, I had all my wheels balanced, still the vibration.

If the vibration goes away accelerating up from 50 to lets say 70, its not the wheel bearings, its your prop shaft.

 

John

 

Thanks John,

 

I will have a go in it tonight and see if I can find out exactly when it all occurs.

 

Will post the results later.

 

Justin

I seem to have the same problem but it is really noticeable at about 80mph especially when lifting off the gas. Prop shaft bearings?

 

David.