Omega Owners Forum - Rear spring rates/heights.

Essex Big Al

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Re: Rear spring rates/heights.
Reply #15 - 29. Aug 2011 at 21:54

chrisgixer wrote on 29. Aug 2011 at 20:47:

Essex Big Al wrote on 29. Aug 2011 at 20:38:

chrisgixer wrote on 29. Aug 2011 at 20:32:

Albs wrote on 29. Aug 2011 at 19:08:

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 ? Undecided

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 Embarrassed

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 ? Undecided

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« Last Edit: 29. Aug 2011 at 21:58 by Essex Big Al »

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chrisgixer Omega King Offline Black ones are faster. Posts: 14570 Wokingham Gender: Drives: "Omega Black" 3.2 Elite. Thanks to Joshwyatt.	Re: Rear spring rates/heights. Reply #16 - 29. Aug 2011 at 21:56 See the vid http://i344.photobucket.com/albums/p326/chrisgixer/30337ea4.mp4
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Essex Big Al Senior Member Offline Posts: 727 Southend Essex Gender: Drives: '00 3.0 Elite saloon ( although it says MV6 on the V5) ! !	Re: Rear spring rates/heights. Reply #17 - 29. Aug 2011 at 22:03 chrisgixer wrote on 29. Aug 2011 at 21:56: See the vid http://i344.photobucket.com/albums/p326/chrisgixer/30337ea4.mp4 thanks
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tunnie Over Active Poster Offline Posts: 22520 London, W3 Gender: Drives: 2.2 CD (LPG'd) & BMW R1200 GS	Re: Rear spring rates/heights. Reply #18 - 29. Aug 2011 at 22:05 fitted Boge springs and standard GM shocks to mine, does appear to sit lower than before
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RobG

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I might have a link, pic
or part number for that

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Re: Rear spring rates/heights.
Reply #19 - 29. Aug 2011 at 22:09

Albs wrote on 29. Aug 2011 at 18:51:

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 ? Undecided

I assume MV6 is lower and stiffer than standard and Elite is softer than standard ? Undecided

I sometimes see uprated springs advertised, but uprated from what to what ?
Tia. Thumbs Up!

Anyone able to answer the pertinent questions that Albs has posed Huh

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« Last Edit: 29. Aug 2011 at 22:10 by RobG »

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chrisgixer Omega King Offline Black ones are faster. Posts: 14570 Wokingham Gender: Drives: "Omega Black" 3.2 Elite. Thanks to Joshwyatt.	Re: Rear spring rates/heights. Reply #20 - 29. Aug 2011 at 22:15 tunnie wrote on 29. Aug 2011 at 22:05: fitted Boge springs and standard GM shocks to mine, does appear to sit lower than before Did the old shocks still extend when compressed?
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chrisgixer

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Black ones are faster.

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Re: Rear spring rates/heights.
Reply #21 - 29. Aug 2011 at 22:18

RobG wrote on 29. Aug 2011 at 22:09:

Albs wrote on 29. Aug 2011 at 18:51:

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 ? Undecided

I assume MV6 is lower and stiffer than standard and Elite is softer than standard ? Undecided

I sometimes see uprated springs advertised, but uprated from what to what ?
Tia. Thumbs Up!

Anyone able to answer the pertinent questions that Albs has posed Huh

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.

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dad1uk Omega Knight Offline Posts: 1139 Birmingham Gender: Drives: Omega 2.5 Tourer Estate	Re: Rear spring rates/heights. Reply #22 - 29. Aug 2011 at 23:02 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.
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Albs Omega King Offline The upgrades are ongoing. Posts: 15083 North Essex Gender: Drives: 2000 2.5CD with LPG/Honda cbr600 FX	Re: Rear spring rates/heights. Reply #23 - 29. Aug 2011 at 23:07 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.
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dad1uk

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Re: Rear spring rates/heights.
Reply #24 - 29. Aug 2011 at 23:09

chrisgixer wrote on 29. Aug 2011 at 21:36:

dad1uk wrote on 29. Aug 2011 at 21:11:

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 Thumbs Up!

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.

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best wishes
Simon.

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tunnie Over Active Poster Offline Posts: 22520 London, W3 Gender: Drives: 2.2 CD (LPG'd) & BMW R1200 GS	Re: Rear spring rates/heights. Reply #25 - 29. Aug 2011 at 23:45 chrisgixer wrote on 29. Aug 2011 at 22:15: tunnie wrote on 29. Aug 2011 at 22:05: 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!
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chrisgixer Omega King Offline Black ones are faster. Posts: 14570 Wokingham Gender: Drives: "Omega Black" 3.2 Elite. Thanks to Joshwyatt.	Re: Rear spring rates/heights. Reply #26 - 29. Aug 2011 at 23:48 Albs wrote on 29. Aug 2011 at 23:07: 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.
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chrisgixer

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Black ones are faster.

Posts: 14570
Wokingham
Gender: male

Drives: "Omega Black" 3.2 Elite. Thanks to Joshwyatt.

Re: Rear spring rates/heights.
Reply #27 - 29. Aug 2011 at 23:54

tunnie wrote on 29. Aug 2011 at 23:45:

chrisgixer wrote on 29. Aug 2011 at 22:15:

tunnie wrote on 29. Aug 2011 at 22:05:

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

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?)

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Essex Big Al

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Southend Essex
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Drives: '00 3.0 Elite saloon ( although it says MV6 on the V5) ! !

Re: Rear spring rates/heights.
Reply #28 - 30. Aug 2011 at 06:50

RobG wrote on 29. Aug 2011 at 22:09:

Albs wrote on 29. Aug 2011 at 18:51:

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 ? Undecided

I assume MV6 is lower and stiffer than standard and Elite is softer than standard ? Undecided

I sometimes see uprated springs advertised, but uprated from what to what ?
Tia. Thumbs Up!

Anyone able to answer the pertinent questions that Albs has posed Huh

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 Undecided

Aplogies again to Albs regarding this thread going a bit off track, but this rear end subject is a bit of a minefield IMO

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2woody

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Drives: '02 MV6, '99 Elite, '99 MV6 estate, '92 Evo 500, Commodore SS

Re: Rear spring rates/heights.
Reply #29 - 30. Aug 2011 at 08:51

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.

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