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[RWD4ever]

I knew the 1990 Lotus Turbo had a modified IRS, but I recently found out it was actually a multi-link setup instead of the crude Opel IRS. Presumably that was a bit scary at 290 km/h.
Therefore they must have customised the underbelly quite a bit.  I haven't found any pictures of the Lotus IRS.  Does anybody know where I might find some?
 

[4x4]

Maybe posting in right section will give better response, i.e general car chat,as this area is for omega related problems only 

[05omegav6]

Maybe posting in right section will give better response, i.e general car chat,as this area is for omega related problems only 

LC=Omega A

[biggriffin]

Was a full air suspended set up,on the rear,think it also dropped rear down at speed.
 could possibly be retro fitted, but why,

[05omegav6]

Was a full air suspended set up,on the rear,think it also dropped rear down at speed.
 could possibly be retro fitted, but why,

Guess the subframes are different, but use the same mounting points...

Given OPs location, possibly looking to retrofit it to a Second generation Commodore chassis...

Certainly has Carlton/Senator dna...

[LC0112G]

I knew the 1990 Lotus Turbo had a modified IRS, but I recently found out it was actually a multi-link setup instead of the crude Opel IRS. Presumably that was a bit scary at 290 km/h.
Therefore they must have customised the underbelly quite a bit.  I haven't found any pictures of the Lotus IRS.  Does anybody know where I might find some?
 

There are no chassis changes to the underbelly of an LC/LO to accommodate the rear suspension. The only real chassis changes (over the standard Carlton GSi) are in the transmission tunnel to accommodate the larger ZF-6 gearbox.

The one dimentional change in the rear end geometry relates to the rear track rod arms, which has a longer inboard section, and hence the pickup point on the trailing arm is moved further inboard. This is supposedly related to the Active Camber Control. The LC has the same basic self levelling setup as on the Omega B, so rear ride height should be maintained within limits across all speed and rear weight limits. The rear spoiler supposedly generates 80kg of down-force at 80MPh (IIRC), One of the design goals was to preserve zero lift at the front end across all speeds, so self levelling is required to counteract the spoiler.

There are obviously lots of LC/LO specific components on the rear suspension, but they are all basically component substitutions using existing fixing points - the only difference being the inboard section of the rear trackrod.

Auto self-leveling was an option on Senator/Carlton/OmegaA, though I have never personally seen one fitted with it so it must have been a rarely taken up option. The pump, rear shox and springs from an OmegaB definatley fit an LC - lots of LC owners have been forced down that route already due to lack of genuine LC/LO spares.

HTH,
Malcolm

[Andy B]

...
Auto self-leveling was an option on Senator/Carlton/OmegaA, though I have never personally seen one fitted with it so it must have been a rarely taken up option.  ....

I had it on my face lifted MK1 2.2 Carlton. like this one The lad that fitted my aftermarket alarm was Vauxhall trained & was very surprised when he saw the compressor under the bonnet, he'd never seen one before either. The car also had ABS & heated seats too ....... apparently very rare options

[Keith ABS]

  The 24V Diamond estate had the self leveling on as standard
Keith B