I have a vibration coming from the rear. Feels like passenger rear corner.
If i'm crusing along at any speed then accelerate it vibrates, feel it more at high speed and its very un-nerving.
My mate said it could be loose driveshaft nuts, damaged driveshaft, but the only thing i've done with the driveshafts is replaced the gearbox seal and the shaft went back in fine and that was about 4 months ago.
The problem has occurred in the last 3 weeks.
If the wheel was bent id feel it under braking that too with out of balance wheel balance.
Possible engine mounts?
I start a new job in 3 weeks time and this needs to be sorted.
Any ideas?
rear vibration *pic added*
Moderators: IMOC Moderators, IMOC Committee Members
-
- Posts: 5494
- Joined: Mon May 16, 2005 8:40 pm
- Location: Wickford, Essex
rear vibration *pic added*
Last edited by SuperRedMR2 on Tue Oct 02, 2012 8:41 pm, edited 1 time in total.
Re: rear vibration *pic added*
I'd defo check the driveshaft nuts first Alex
I had some come loose a while back
One vibrated off and was lost
I had some come loose a while back
One vibrated off and was lost
Re: rear vibration *pic added*
Driveshaft nuts should have a clip on to stop them slackening, but i suppose if the clip has corroded and gone on holiday then they could slacken.
platmatt8 wrote:Lauren has got bigger balls than most men on this site
charged wrote:Mine's probably screaming 'stop raping me'
-
- Posts: 5494
- Joined: Mon May 16, 2005 8:40 pm
- Location: Wickford, Essex
Re: rear vibration *pic added*
I'll put it on axle stands at weekend and put it in first to see if I can see any movement while the shafts are going round.
I'll check the nuts first, but there are 6 nuts, even if one fell off its still got 5 holding it tight.
I'll check the nuts first, but there are 6 nuts, even if one fell off its still got 5 holding it tight.
Re: rear vibration *pic added*
pk_090 wrote:Driveshaft nuts should have a clip on to stop them slackening, but i suppose if the clip has corroded and gone on holiday then they could slacken.
No clips on mine Alex
Nothing to stop 'em coming loose
They're just ordinary flange nuts
They may have been tab-washered originally though cos the garage replaced some gearbox parts when I bought the car
Would be a good idea if I could lock 'em, cos of the brute force that gets applied off the start line
6K revs & drop the clutch
Last edited by elbon50 on Mon Oct 01, 2012 4:15 pm, edited 5 times in total.
Re: rear vibration *pic added*
SuperRedMR2 wrote:I'll put it on axle stands at weekend and put it in first to see if I can see any movement while the shafts are going round.
I'll check the nuts first, but there are 6 nuts, even if one fell off its still got 5 holding it tight.
Yes but the other 5 could have slackened off too Alex
Then the tulip joint would probably shake around & vibrate
-
- Posts: 5494
- Joined: Mon May 16, 2005 8:40 pm
- Location: Wickford, Essex
Re: rear vibration *pic added*
Wheels nuts are tight so its not that.
Will look at driveshafts tonight.
Will look at driveshafts tonight.
Re: rear vibration *pic added*
elbon50 wrote:pk_090 wrote:Driveshaft nuts should have a clip on to stop them slackening, but i suppose if the clip has corroded and gone on holiday then they could slacken.
They're just ordinary flange nuts
They are actually not that ordinary - you try and find a source for flanged non serrated flange nuts - not easy. The material seems to be high grade also - if you try regular steel nuts or even K-nuts they will strip before they reach the torque spec.
Re: rear vibration *pic added*
scomr2 wrote:elbon50 wrote:pk_090 wrote:Driveshaft nuts should have a clip on to stop them slackening, but i suppose if the clip has corroded and gone on holiday then they could slacken.
They're just ordinary flange nuts
They are actually not that ordinary - you try and find a source for flanged non serrated flange nuts - not easy. The material seems to be high grade also - if you try regular steel nuts or even K-nuts they will strip before they reach the torque spec.
I take the points you make SCO
When I said "ordinary" what I had in mind was that they're not any kind of locker
-
- Posts: 5494
- Joined: Mon May 16, 2005 8:40 pm
- Location: Wickford, Essex
Re: rear vibration *pic added*
Checked everything;
All the nuts are tight
No play in my rear wheels, no movement up-down or side-2-side
Slight in and out play in the gearbox shafts but that's normal
No spring have snapped, would have not hoped not as they are only 4 years old, but no suspension issues. All drop links are okay, ball joints fine.
Had the wheels going round with engine on, on axle stands and no noticeable wheel movement, i.e. buckled.
Only noticeable issue, which could well be the blame is the gearbox mount bush, which is split through.
I'm buying another car at the weekend, so i'll have lots more time to look into problems. Will be using it for another week anyway, but will try and wedge some rubber in between the gaps between the bracket and the bush to see if it makes any difference or not.
All the nuts are tight
No play in my rear wheels, no movement up-down or side-2-side
Slight in and out play in the gearbox shafts but that's normal
No spring have snapped, would have not hoped not as they are only 4 years old, but no suspension issues. All drop links are okay, ball joints fine.
Had the wheels going round with engine on, on axle stands and no noticeable wheel movement, i.e. buckled.
Only noticeable issue, which could well be the blame is the gearbox mount bush, which is split through.
I'm buying another car at the weekend, so i'll have lots more time to look into problems. Will be using it for another week anyway, but will try and wedge some rubber in between the gaps between the bracket and the bush to see if it makes any difference or not.
Re: rear vibration *pic added*
Yeah that's knackered dude.
Re: rear vibration *pic added*
You can repair it by removing the bush complete with bracket, seal one side of it, and pour in some RTV Silicone ( e.g. this stuff http://www.ebay.co.uk/itm/RTV-NEW-Silic ... 35bd04e08e )
Alternatively buy a set of these http://twosrus.com/catalog/product_info ... cts_id=215
Alternatively buy a set of these http://twosrus.com/catalog/product_info ... cts_id=215
-
- Posts: 5494
- Joined: Mon May 16, 2005 8:40 pm
- Location: Wickford, Essex
Re: rear vibration *pic added*
Oh Mart why did you have to show me those!
It's being rebuilt through the winter so things like that will be getting bought won't they!
It's being rebuilt through the winter so things like that will be getting bought won't they!
Re: rear vibration *pic added*
SuperRedMR2 wrote:Oh Mart why did you have to show me those!
It's being rebuilt through the winter so things like that will be getting bought won't they!
I can confirm that they add little if anything to the vibration transmitted from the engine - even on my car with thin bucket seats bolted directly to the car floor you can hardly feel any engine vibration
-
- IMOC Affiliated Trackday Organiser
- Posts: 10506
- Joined: Tue Jan 25, 2005 9:49 am
- Location: South Yorkshire
Re: rear vibration *pic added*
MartG wrote:Alternatively buy a set of these http://twosrus.com/catalog/product_info ... cts_id=215
I keep those in stock.
Re: rear vibration *pic added*
Peter Gidden - SBITS wrote:MartG wrote:Alternatively buy a set of these http://twosrus.com/catalog/product_info ... cts_id=215
I keep those in stock.
What price are they from you Peter ?
Are they difficult to install ?
Re: rear vibration *pic added*
elbon50 wrote:
Are they difficult to install ?
No. Really easy
(You didn't ask about how difficult it is to get the old ones out did you?)
Re: rear vibration *pic added*
kaiowas wrote:
(You didn't ask about how difficult it is to get the old ones out did you?)
Easy with a blowtorch
Re: rear vibration *pic added*
MartG wrote:kaiowas wrote:
(You didn't ask about how difficult it is to get the old ones out did you?)
Easy with a blowtorch
Needs to be a good blowtorch to get the metal sleeve out that's a press fit into the mount. Or a hacksaw.
Re: rear vibration *pic added*
kaiowas wrote:
No. Really easy
(You didn't ask about how difficult it is to get the old ones out did you?)
Removing the old one is part of the installation process isn't it