Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: 456lbft on 18 December 2019, 10:53:20
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Does anyone know which or if any Omegas had LSDs fitted as standard, and what options are there for diff ratios? I assume diesels are different and manuals/autos or 4 cyl/V6.
I assume that police spec manual 3.2 would have an LSD, I was told they spec it so they can pull away from grassy verges...I'm sure it's more to do with showing off their advanced driving skills.
I'd like to fit one to my 3.2 (Auto) MV6, which doesn't seem to be so equipped :-[. If anyone has one, or a suitable donor rear end that could be rebuilt and a LSD fitted, please let me know.
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STD fit to police, HM revenue etc, was an option on retail cars, sold my last one for £250. Unicorn poo is easier to source,,, there is a rumour that another hoof'er has a couple. :o
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Zirk used to have a couple, but I haven't noticed him online for quite a while.
Edit. He was online 30th November. Not as long as I thought. Might be worth dropping him a PM.
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Zirk used to have a couple, but I haven't noticed him online for quite a while.
Edit. He was online 30th November. Not as long as I thought. Might be worth dropping him a PM.
Thanks, how do I find Zirk?
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Zirk used to have a couple, but I haven't noticed him online for quite a while.
Edit. He was online 30th November. Not as long as I thought. Might be worth dropping him a PM.
Thanks, how do I find Zirk?
As its Christmas, I'll give you a clue. ::)
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Search for him in the list of members and then send a pm.
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Just to throw doubt into proceedings, just have a google and research what shape a 20+ year old LSD is likely to be in, even on low miles, versus what you are intending to gain from the fitting of such. I seem to recall reading a rather in depth look at, amongst others, an Omega LSD from a top OEM (Prodrive, someone like that), and they tested it to discover it had lost 50% of its effectiveness after 80k.
I'm sure my figures are well off, but it was something like the above.
I'm biased in as much as I've never ran a car with one, but is it 'pub bragging rights', or are you building a track day car, or something else?
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Thanks for the feedback. I realise that any diff is likely to need to be rebuilt, and that there are any number of varying types of 'diff, with different characteristics. I expect that an LSD like a Quaife or Gripper could be fitted to a normal casing, but I have reasoned that it might be easier if the casing to be rebuilt already had an LSD in it, or better still if I could find one in good enough condition that wouldn't need rebuilding. My long term goal with the MV6 is to improve the road dynamics (and fun) without spending too much. Maybe very long term it could end up as a track day/driver training tool if the rust can be kept at bay. It fits in with my sideline of spares, service & restoration of Lotus Carlton's, as the MV6 seems like a decaff version of the LC, that can be enjoyed without the risk/responsibility/guilt of thrashing an icon.
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Just to throw doubt into proceedings, just have a google and research what shape a 20+ year old LSD is likely to be in, even on low miles, versus what you are intending to gain from the fitting of such. I seem to recall reading a rather in depth look at, amongst others, an Omega LSD from a top OEM (Prodrive, someone like that), and they tested it to discover it had lost 50% of its effectiveness after 80k.
I'm sure my figures are well off, but it was something like the above.
I'm biased in as much as I've never ran a car with one, but is it 'pub bragging rights', or are you building a track day car, or something else?
bear in mind that factory LSDs for roadcars don't lockup very much(20% for a Capri LSD for example), and tend to be inadequate for enthusiastic track use. They also wear very quickly compared to an open diff, so an expensive rebuild is usually required for an already expensive acquisition. A soft, heavy Omega with only 200bhp won't see much benefit from an LSD, which is probably why they were always rare.
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There is a guy on Facebook... on the Omega Owners Group page,does fully reconditioned Omega LSD's, I can't recall how much he charges,but it would be plus shipping from N.I :-\ I was considering replacing both of mine,but after a fluid change, they now seem to be working as they should, and so didn't follow it up. He is still advertising from time to time,might be worth getting in touch.
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There is a guy on Facebook... on the Omega Owners Group page,does fully reconditioned Omega LSD's, I can't recall how much he charges,but it would be plus shipping from N.I :-\ I was considering replacing both of mine,but after a fluid change, they now seem to be working as they should, and so didn't follow it up. He is still advertising from time to time,might be worth getting in touch.
Are yours LSD equipped? I understand that the amount of lock up can be dramatically affected by the type and condition of diff oil used. They rely on a friction modifier either in or added to the oil.
I'm just getting frustrated by the inner wheel spinning up when the TC is switched off, or the TC cutting in unnecessarily early in slippy conditions so I have assumed that mine has an open diff.
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I'm just getting frustrated by the inner wheel spinning up when the TC is switched off, or the TC cutting in unnecessarily early in slippy conditions
They all do that Sir ;)
so I have assumed that mine has an open diff.
The vast majority are :y
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Does anyone know which or if any Omegas had LSDs fitted as standard
None, and neither was it available as an option in the retail channel.
It was available in vehicles from the Special Vehicles unit, for a cost. So many of the plod cars have them for example.
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Zirk used to have a couple, but I haven't noticed him online for quite a while.
Edit. He was online 30th November. Not as long as I thought. Might be worth dropping him a PM.
Thanks, how do I find Zirk?
Ive only got 2 LSD's left and there both still attached to 3.2 Manual Specials and I'd like to keep them that way.
I did have a couple of good 3.9 (Auto) LSD ones but sadly they belong to the DVLA now as I forgot I left them in a Boot of a Car >:(
I would say the chances of finding any now are zero, most of the Ex Plod ones where for Manual Boxes (3.7 Ratio) so the chances of finding any 3.9 Ratios for your Auto is probably a non starter.
You could fit a 3.7 Ratio LSD but it wont feel or run right with an Auto box especially when it come the the Final Lock Up on the Box at Mid Speeds and Hills on a Cruise, like wise you can fit a 3.9 to a Manual, get a bit more grunt on Acceleration with the higher Ratio, but it will drive you Mad on a Motorways with a V6 Revving at 3K at 70mph.
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Zirk used to have a couple, but I haven't noticed him online for quite a while.
Edit. He was online 30th November. Not as long as I thought. Might be worth dropping him a PM.
Yea Im on Leave of Absence at the moment due to being the Sadest Dick on the Forum for the last couple of Years. :(
Just checked and Sir Tigger QC is currently catching Me up in second place with 200 Days, happy days. ;D
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Speak of the devil...…..
Lol.
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Just to throw doubt into proceedings, just have a google and research what shape a 20+ year old LSD is likely to be in, even on low miles, versus what you are intending to gain from the fitting of such. I seem to recall reading a rather in depth look at, amongst others, an Omega LSD from a top OEM (Prodrive, someone like that), and they tested it to discover it had lost 50% of its effectiveness after 80k.
I'm sure my figures are well off, but it was something like the above.
I'm biased in as much as I've never ran a car with one, but is it 'pub bragging rights', or are you building a track day car, or something else?
In my experience, most of the LSD's from Ex Plod Cars were good, assuming you could get the Car relatively quickly from the Force and hasn't been round the Block a few times with 2nd Hand Owners.
Or sadly where some Muppet from Vauxhalls or A N Other Garage topped up the LSD's with Standard Diff Oil and killed them off.
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Speak of the devil...…..
Lol.
Ive still got my eye on you, so behave. ;D
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Zirk used to have a couple, but I haven't noticed him online for quite a while.
Edit. He was online 30th November. Not as long as I thought. Might be worth dropping him a PM.
Thanks, how do I find Zirk?
Ive only got 2 LSD's left and there both still attached to 3.2 Manual Specials and I'd like to keep them that way.
I did have a couple of good 3.9 (Auto) LSD ones but sadly they belong to the DVLA now as I forgot I left them in a Boot of a Car >:(
I would say the chances of finding any now are zero, most of the Ex Plod ones where for Manual Boxes (3.7 Ratio) so the chances of finding any 3.9 Ratios for your Auto is probably a non starter.
You could fit a 3.7 Ratio LSD but it wont feel or run right with an Auto box especially when it come the the Final Lock Up on the Box at Mid Speeds and Hills on a Cruise, like wise you can fit a 3.9 to a Manual, get a bit more grunt on Acceleration with the higher Ratio, but it will drive you Mad on a Motorways with a V6 Revving at 3K at 70mph.
Thanks for that. The ratio thing was going to be my next question, I certainly would want to go to a longer ratio, and the 3.9 explains the excellent low speed pick up of my auto which puts my VW DSG box to shame.
So it looks as though I am looking for a 3.9 open diff to experiment with. I do have a bearing like rumble from the back end of mine at certain speeds.
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There was a company, that rebuilds them for £300, can't remember who they were,, I use to use Amsoil diff oil in mine,had the correct friction modifer already in, :)
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Yea Im on Leave of Absence at the moment due to being the Sadest Dick on the Forum for the last couple of Years. :(
At least you aint got over 100,000 posts :-[. Good job I culled myself ;D
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Zeke has an LSD. I gave it an oil change a couple of years ago (thanks to the frigging excellent guide on here). It certainly works, well enough for me. On 180k miles so not bad.
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I have one from my 2.6L that had it as an option, was a common ad on here in the north of Sweden to handle slippery roads in winter.
It is however in need of rebuild since the LSD is damaged, worn discs. Being from a 2.6L Auto it has 4.22:1 in gears.
I wasn't successful in finding any replacement looking for a LSD on the web sites for scrapyards in Sweden or Germany. Ended up with a Non-LSD as a replacement.
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I have had many ex police senators and omegas 3.0 /3.2 manual and auto with LSD. On acquisition from the BCA or WOMA auctions they always performed 100% and were actually a nice tight diff that locked up good and early. I usually changed the diff oil and refilled with gm diff oil and tube of gm friction modifier at 100k and in every case the were performing really well many miles later.
Best way to acquire one now is to buy an mot failed ex police omega for pennies and strip it.
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I have had many ex police senators and omegas 3.0 /3.2 manual and auto with LSD. On acquisition from the BCA or WOMA auctions they always performed 100% and were actually a nice tight diff that locked up good and early. I usually changed the diff oil and refilled with gm diff oil and tube of gm friction modifier at 100k and in every case the were performing really well many miles later.
Best way to acquire one now is to buy an mot failed ex police omega for pennies and strip it.
Good luck with that...
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I have had many ex police senators and omegas 3.0 /3.2 manual and auto with LSD. On acquisition from the BCA or WOMA auctions they always performed 100% and were actually a nice tight diff that locked up good and early. I usually changed the diff oil and refilled with gm diff oil and tube of gm friction modifier at 100k and in every case the were performing really well many miles later.
Best way to acquire one now is to buy an mot failed ex police omega for pennies and strip it.
I agree with everything youve just said there. :y
Apart from the last sentence. :-X
There was a time when you couldnt give away Ex Plod Omega,s, now there like Rocking Horse Poo. ;)
Edit: and there worth a fair bit now considering the fitments.
Just thought I,d through that last bit in case I decide to sell any of mine. ;D
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211,000 on mine and it is performing as it should but Does squeak a bit occasionally :y
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At risk of it being a numb question, how can you tell if an Omega has a LSD fitted?
I only ask because I have an ex police 3.2 saloon auto for breaking, although it wasn't a traffic patrol vehicle, but a Chief Staff Officers car, so it is an Elite rather than a Special, so it wasnt spec'd for razzing around....
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At risk of it being a numb question, how can you tell if an Omega has a LSD fitted?
I only ask because I have an ex police 3.2 saloon auto for breaking, although it wasn't a traffic patrol vehicle, but a Chief Staff Officers car, so it is an Elite rather than a Special, so it wasnt spec'd for razzing around....
For breaking? Too far gone?
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At risk of it being a numb question, how can you tell if an Omega has a LSD fitted?
I only ask because I have an ex police 3.2 saloon auto for breaking, although it wasn't a traffic patrol vehicle, but a Chief Staff Officers car, so it is an Elite rather than a Special, so it wasnt spec'd for razzing around....
Jack up the rear end and turn one wheel. The other should rotate the same way or not at all. If it turns the opposite way then the diff is open/non lsd :y
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At risk of it being a numb question, how can you tell if an Omega has a LSD fitted?
I only ask because I have an ex police 3.2 saloon auto for breaking, although it wasn't a traffic patrol vehicle, but a Chief Staff Officers car, so it is an Elite rather than a Special, so it wasnt spec'd for razzing around....
For breaking? Too far gone?
It depends on how much anyone would be willing to throw at it. The engine is harsh on the bottom end when revved, needs new cats, and I've removed the S/L suspension. Alloys, bonnet and front bumper have already gone. It has a lovely tan leather interior and colour Sat Nav, and the rear arches are rust free, but having three other good Elites, plus two other Elites that I haven't decided on their future as yet, I decided that I won't be putting it back on the road.
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At risk of it being a numb question, how can you tell if an Omega has a LSD fitted?
I only ask because I have an ex police 3.2 saloon auto for breaking, although it wasn't a traffic patrol vehicle, but a Chief Staff Officers car, so it is an Elite rather than a Special, so it wasnt spec'd for razzing around....
Jack up the rear end and turn one wheel. The other should rotate the same way or not at all. If it turns the opposite way then the diff is open/non lsd :y
Thanks for that. I will check the diff - but probably now after the Xmas break.
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At risk of it being a numb question, how can you tell if an Omega has a LSD fitted?
I only ask because I have an ex police 3.2 saloon auto for breaking, although it wasn't a traffic patrol vehicle, but a Chief Staff Officers car, so it is an Elite rather than a Special, so it wasnt spec'd for razzing around....
Most non-retail Omega had Lsd as standard, all of mine did, and I had automatics,, to be 100% remove driveshaft, look into diff,, your looking for a + were the end of driveshaft sits... Lsd not fitted there's a --,, A picture would be better.
Can't think what forms it tho.
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I have one from my 2.6L that had it as an option, was a common ad on here in the north of Sweden to handle slippery roads in winter.
It is however in need of rebuild since the LSD is damaged, worn discs. Being from a 2.6L Auto it has 4.22:1 in gears.
I wasn't successful in finding any replacement looking for a LSD on the web sites for scrapyards in Sweden or Germany. Ended up with a Non-LSD as a replacement.
Sure, I have 2.6 V6 Automatic and this LSD 4.22/1, too. Good ratio for me. When speedo shows 115km/h I have about 2500 rpm. Also when towing a caravan in bad roads found LSD useful.
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105 km/hour=2500 rpm., sorry.