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[Big_Al]

I have a perfectly good pair of springs from the Elite Im breaking (marked LA) which I assume are self levelling type, and therefore assume that they are a lot softer ? :-/

LA springs are a bit of an oddity. I had them on mine from the previous owner. They sitbtoo high, but are firmer than sl springs.

Softest is Elite suspension, standard(gls, cd, cdx) in the middle, mv6 pre face uses stock springs, but different shocks that are firmer damped but don't hold the car so high. Then there is lowered sports chassis fitted to face lifts only(mv6 and 2.2 sport) shorter springs different shocks again, sits 15 mill lower.

LA's sit way higher than all of those.

Agreed . .  had em on mine & sat at 690mm.

Still can't grasp this thing with the shocks though Chris

Well, taking pre face lift mv6, springs are the same as standard gls, cd, cdx. But the car apparently sits lower. So only difference is shocks, which do not extend at the same rate as standard shocks.....by extend I mean, with a shock in your hand, compress it fully so it bottoms out then let go. It will fully extend on it's own. Pre face lift mv6 will extend at a slower less forcefull rate than standard shocks. Hence the car sits lower.... Or that's the general idea.

So tell me if I have got this right Chris,  if you  take the shocks off of a pre facelift MV6  it will sit higher than with them on ? :-/ :-/   

[feeutfo]

See the vid

http://i344.photobucket.com/albums/p326/chrisgixer/30337ea4.mp4

[Big_Al]

See the vid

http://i344.photobucket.com/albums/p326/chrisgixer/30337ea4.mp4

thanks

[tunnie]

fitted Boge springs and standard GM shocks to mine, does appear to sit lower than before   :-/

[RobG]

Anyone got any info on the rates and ride heights for the various different spring types ?
Standard/MV6/Elite.
Seen a fair amount of discussion on here about such things, but dont think Ive ever seen the relevant data.
Elite ride height wont just be governed by the springs, but the others will and all 3 must have a rating figure in pounds ? :-/
I assume MV6 is lower and stiffer than standard and Elite is softer than standard ? :-/
I sometimes see uprated springs advertised, but uprated from what to what ?
Tia.

Anyone able to answer the pertinent questions that Albs has posed :-?

[feeutfo]

fitted Boge springs and standard GM shocks to mine, does appear to sit lower than before   :-/

Did the old shocks still extend when compressed?

[feeutfo]

Anyone got any info on the rates and ride heights for the various different spring types ?
Standard/MV6/Elite.
Seen a fair amount of discussion on here about such things, but dont think Ive ever seen the relevant data.
Elite ride height wont just be governed by the springs, but the others will and all 3 must have a rating figure in pounds ? :-/
I assume MV6 is lower and stiffer than standard and Elite is softer than standard ? :-/
I sometimes see uprated springs advertised, but uprated from what to what ?
Tia.

Anyone able to answer the pertinent questions that Albs has posed :-?

No idea on the maths for spring rates. 2woody will most likely know.

"Uprated springs" is usually just a phrase planted in adverts for Chavs thinking they must be better, purely because they are different or firmer ime.

[dad1uk]

I was led to believe there were only a few different springs for the Omega.
ie - Estate Standard
    - Estate Heavy Duty
    - Saloon
    - MV6
and I think a different spring for the Face lift....
But then you have the Springs for dropping the body and customising the car.

[albitz]

Plus - Elite springs fitted to self levelling setup,plus LA springs which seem to be often found on elites, but no-one seems to know what they are.

[dad1uk]

I had a set of standard springs on my Tourer estate and I was in danger of losing the exhaust.
I eventually got a set of Heavy Duty Springs and the car is sitting normally.
I checked the Shocks, they gave resistance in both directions so left them alone.
I thought all shock absorbers do is what the name says. Absorb shocks
They may offer a little assistance to the springs but as to helping hold the weight of the car then they couldn't do this otherwise you would not be able to compress them.
As for air shocks, these I don't know about.....

Not sure whats fitted to the tourer tbh, but I would expect the shocks to extend under their own power, or suspect they need replacing...? Ok the ride hight is better, but is the hight correct? Does the car bounce excessively when you compress it, by bouncing on the boot lip for instance...?

I'll get you to have a look at Newent Chris, and see what you think. Personally I'm very happy with it. There was no way I could leave the other springs on it. I will bring them with me and see what you reckon. I feel I was supplied wrong even though they assure me they are correct.
The only difference with the Heavy Duty Springs is the thickness of the coil. The height of the spring is the same.

[tunnie]

fitted Boge springs and standard GM shocks to mine, does appear to sit lower than before   :-/

Did the old shocks still extend when compressed?

No. They were totally fubared!

[feeutfo]

Plus - Elite springs fitted to self levelling setup,plus LA springs which seem to be often found on elites, but no-one seems to know what they are.

LA springs are not listed on epc for omega.

Believed to be Carlton. Which may be similar, but is not the same.

[feeutfo]

fitted Boge springs and standard GM shocks to mine, does appear to sit lower than before   :-/

Did the old shocks still extend when compressed?

No. They were totally fubared!

What does it measure from floor to wheel arch. (trying to remember, should it be 675mm?)

[Big_Al]

Anyone got any info on the rates and ride heights for the various different spring types ?
Standard/MV6/Elite.
Seen a fair amount of discussion on here about such things, but dont think Ive ever seen the relevant data.
Elite ride height wont just be governed by the springs, but the others will and all 3 must have a rating figure in pounds ? :-/
I assume MV6 is lower and stiffer than standard and Elite is softer than standard ? :-/
I sometimes see uprated springs advertised, but uprated from what to what ?
Tia.

Anyone able to answer the pertinent questions that Albs has posed :-?

Can't think where that info would be available from . .  it never surfaced several months ago when I was trying to get to the bottom of exactly what LA springs were. But must be available from somewhere :-/ :-/ :-/   
 Aplogies again to Albs regarding this thread going a bit off track, but this rear end subject is a bit of a minefield IMO

[2woody]

it would be great if we could put together a table of the spring rates & ride heights, but I fear it's going to be impossible because of two things :-

springs age. So, person "A" with a new set of MV6 springs might well report a higher ride height than person "B" with high-mileage Elite springs, and

there's a lot of "stiction" in the system. So if you removed and refitted a pair of springs, you';re very likely to get a different answer when you put them back on.

As an example, the highest-riding car I have is fitted with the supposedly lower MV6 chassis ( LU rear springs, etc. )

Spring rates, if we collate a table, must come from the manufacturer

Yes, dampers are usually sprung-loaded, BUT the spring force is way smaller than the force provided by the road spring, so can be discounted from any calculations.