Rear suspension ridehight

Geraint · 3rd April 2014, 21:19

Hi
A workmate recently bought a 75 cdti auto with 130k on the clock. We found that the drives side rear suspension strut was completely shot. As a result we changed the shock absorbers and springs on both sides with new items.

After the work was done there was a difference in the hight of the car at the rear - not noticed if this was there before the work was done.

On the drivers side the gap between the top of the wheel and the wheel arch is 2.25 inch (the side which had the u/s shock absorber) and on the passenger rear just over 3.00 inch.

Both wheels were removed and the spring settings re-checked and found to be ok.

Is this ok or should we look further into this.

Geraint

neilbaker86 · 3rd April 2014, 21:27

What springs did you use? Genuine or aftermarket?

There were various different specifications for road springs, every car should have a sticker under the rear seat cushion which gives a code for the springs fitted at the factory.

This can then be cross referenced to the correct part number required.

The only problem is some springs are NLA, and equivalents have been issued, whether these equivalents are 'correct' or not is only known by X-Part.

http://www.rimmerbros.co.uk/content-...le-Information

Scroll down to the 'CI Codes' section.

Geraint · 3rd April 2014, 22:57

Thanks Neil

There is no sticker under the seat unfortunately. Two Sach springs were bought from EuroParts as per their catalog.

I may swop them over this weekend to see if the problem moves with them.

Geraint

SD1too · 4th April 2014, 10:14

Quote:

Originally Posted by Geraint

On the drivers side the gap between the top of the wheel and the wheel arch is 2.25 inch (the side which had the u/s shock absorber) and on the passenger rear just over 3.00 inch.

Geraint,

According to MGR the height (at unladen weight) from the hub centre to the rear wheel arch should be between 389 and 409 mm for Rover models.

Simon

MG Tom · 4th April 2014, 10:26

Simon, is that a tolerance range or different values for different models?

If not within spec I recommend measuring the spring length when removed from the car.

tourer · 4th April 2014, 11:08

According to the source of information that cannot be named, height from centre of wheel to wheel arch should be:-

Rover 75. Front. 408.5mm + or - 10 (16.08 inch + or - 0.39)
Rear 399mm + or - 10 (15.71 inch + or - 0.39)

MG models are listed as 20mm lower

Geraint · 4th April 2014, 20:54

Thank's for the replies and interest - will check the measurements over the weekend.

One point, we raised the rear of the car by the tow hook point and the side with the bigger gap (passenger side), the rear tyre left the ground before the drivers side, with the car being raised a further 2 in before this tyre was clear of the ground.

The side with the smaller gap has the wheel hanging lower when the car is raised off the ground.

Is this significant in any way?

Geraint

3rd April 2014, 21:19	#1
Geraint Regular poster Rover 75 CDTi Manual Join Date: May 2012 Location: Borehamwood Posts: 43 Thanks: 15 Thanked 1 Time in 1 Post	Rear suspension ridehight Hi A workmate recently bought a 75 cdti auto with 130k on the clock. We found that the drives side rear suspension strut was completely shot. As a result we changed the shock absorbers and springs on both sides with new items. After the work was done there was a difference in the hight of the car at the rear - not noticed if this was there before the work was done. On the drivers side the gap between the top of the wheel and the wheel arch is 2.25 inch (the side which had the u/s shock absorber) and on the passenger rear just over 3.00 inch. Both wheels were removed and the spring settings re-checked and found to be ok. Is this ok or should we look further into this. Geraint

3rd April 2014, 22:57	#3
Geraint Regular poster Rover 75 CDTi Manual Join Date: May 2012 Location: Borehamwood Posts: 43 Thanks: 15 Thanked 1 Time in 1 Post	Rear ride hight Thanks Neil There is no sticker under the seat unfortunately. Two Sach springs were bought from EuroParts as per their catalog. I may swop them over this weekend to see if the problem moves with them. Geraint

4th April 2014, 10:26	#5
MG Tom Posted a thing or two ex. MG ZT+ Join Date: May 2013 Location: Northampton-ish Posts: 1,484 Thanks: 156 Thanked 98 Times in 95 Posts	Simon, is that a tolerance range or different values for different models? If not within spec I recommend measuring the spring length when removed from the car. __________________ '03 MG ZT+ 1.8T X-Power Grey with Monogram 'WTD' black alcantara trim. [SIGPIC][/SIGPIC] My project thread HERE

4th April 2014, 20:54	#7
Geraint Regular poster Rover 75 CDTi Manual Join Date: May 2012 Location: Borehamwood Posts: 43 Thanks: 15 Thanked 1 Time in 1 Post	Rear ride hight Thank's for the replies and interest - will check the measurements over the weekend. One point, we raised the rear of the car by the tow hook point and the side with the bigger gap (passenger side), the rear tyre left the ground before the drivers side, with the car being raised a further 2 in before this tyre was clear of the ground. The side with the smaller gap has the wheel hanging lower when the car is raised off the ground. Is this significant in any way? Geraint

3rd April 2014, 21:27	#2
neilbaker86 Gets stuck in MG ZT Join Date: Jun 2011 Location: Oxford Posts: 847 Thanks: 124 Thanked 312 Times in 147 Posts	What springs did you use? Genuine or aftermarket? There were various different specifications for road springs, every car should have a sticker under the rear seat cushion which gives a code for the springs fitted at the factory. This can then be cross referenced to the correct part number required. The only problem is some springs are NLA, and equivalents have been issued, whether these equivalents are 'correct' or not is only known by X-Part. http://www.rimmerbros.co.uk/content-...le-Information Scroll down to the 'CI Codes' section.

4th April 2014, 11:08	#6
tourer Posted a thing or two Rover 75 Tourer CDT Auto. Join Date: Oct 2011 Location: Long Eaton Posts: 1,342 Thanks: 30 Thanked 220 Times in 160 Posts	According to the source of information that cannot be named, height from centre of wheel to wheel arch should be:- Rover 75. Front. 408.5mm + or - 10 (16.08 inch + or - 0.39) Rear 399mm + or - 10 (15.71 inch + or - 0.39) MG models are listed as 20mm lower