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[05omegav6]

Assuming you're talking wwd... bell housing will dictate what will/won't fit. I can't tell you what the exact differences are but...

Omega B.
93185903 is the p/n for both the 2.6 and 3.0 kits,
93185904 is the p/n for the 2.6 kit.

90509302 is the p/n for the 2.5 flywheel.
90509303 is the p/n for the 3.0 flywheel.
9196643 is the p/n for the 2.6 flywheel.

Vectra B.
9201516 is the p/n for 2.6 kit.
90466476 is the p/n for the 2.6 flywheel.

Vectra C.
93185922 is the p/n for the 3.2 kit.
93174634 is the p/n for the 3.2 flywheel.

Taken from... http://ecat24.com/catalog/types/1/30 No 3.2 Omega clutch/flywheel listed

Mark DTM or Serek might be able to shed more light on it...

[terry paget]

Gentlemen, I thank you for your comments. I have returned to the JamesV6CDX's maintenance guide. I see no mention of the slave cylinder, I assume it is within the gearbox housing. You say it is concentric; I imagine, with the gearbox input shaft. Does it push directly on the clutch thrust bearing? On the Senator, my Peugeot 505, and my Mini, the slave cylinder was external to the gearbox and operated the clutch via a lever and pivot. I am sure all will become clear when I take the gearbox off.

[05omegav6]

Three bolts hold it to the gearbox casing input shaft runs through the centre... and yes the bearing acts directly on the pressure plate, no levers involved

The external slaves are the result of lazy designers bodging older cable designs

To add, bleeding it is a dog of a job

[Nick W]

Three bolts hold it to the gearbox casing input shaft runs through the centre... and yes the bearing acts directly on the pressure plate, no levers involved

The external slaves are the result of lazy designers bodging older cable designs

External slaves are the result of pragmatists who accept that hydraulic cylinders fail, and object to removing the gearbox just to change the bloody thing!
Changing an external cylinder is a few minutes work - we did one on a Humber Sceptre in the dark, outside the previous owner's house, in  less time than he took to make the tea. The look on his face when he came out with the tea to find the car being roadtested was priceless.

[05omegav6]

If you change the Omega one when the box is out it shouldn't break in the first place

Arguably the Omega one is less stressed because it doesn't have to force a lever every time the pedal is pressed which could also suggest why external ones fail more often...

[terry paget]

I note BuyPartsBy list the same two clutch kits for all V6 Omegas.

[AndyStobbs]

If you change the Omega one when the box is out it shouldn't break in the first place

Arguably the Omega one is less stressed because it doesn't have to force a lever every time the pedal is pressed which could also suggest why external ones fail more often...

Not sure how much difference that makes. The pressure the system reaches is dictated by the spring tension on the clutch cover. As most of the levers on external type box's are very near to a 1:1 ratio its the same thing as pushing direct.

Atleast the external slaves are removed from the dust and heat unlike a CSC.

[05omegav6]

On three Omegas, the only slave failure was due to debris damage from an exploding thrust bearing at 140k, on two other cars, one I didn't own long enough for the clutch to fail, tother the slave failed at a paltry 65k...

Point being if it's changed whilst the gearbox is out, it should never be an issue, besides, it's only three bolts

[Nick W]

Mini is only 2, and none to get at it.
Ford used a circlip on many of theirs, the one on my Zephyr needed big Stilsons to twist it in the bore.
I don't think either type has an edge on reliability, but external ones certainly do for maintenance.

[terry paget]

I rang BuyPartsBy. The cheaper kit does not include the thrust bearing, otherwise they are identical. So the best but seems to be Trade Club Vauxhall.

[terry paget]

BuyPartsBy cheekily did not include a picture of their product. Now I realise the set I mentioned earlier is cheapest, at £161 inc. VAT, with free P & P. Here it is again.
http://www.ebay.co.uk/itm/NEW-CLUTCH-KIT-Vauxhall-Omega-3-2-V6-24v-2000-2004-/370532853297?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item56457aa631

[AndyStobbs]

Buy the best you can afford not the cheapest you can find. I only fit LUK or valeo clutches. Some of the cheaper has caused me issues in the past.

[AndyStobbs]

Incidentally I was informed today that a 3.2 omega has the same size clutch as a 2.6 vectra. Both at 240mm and with the same number of splines (14 I think).

Don't know what the differences between all the part numbers are but it must only be subtle.

[terry paget]

Buy the best you can afford not the cheapest you can find. I only fit LUK or valeo clutches. Some of the cheaper has caused me issues in the past.

Thanks Andy. Good advice. I imagine you would include Vauxhall TC units as OK. So the ByPartsBy LUK 3 piece kit at £179.81 inc vat is OK (plus postage?) and the Vx TC kit at £187.22, collect your own.

[05omegav6]

By the time it's delivered, you might as well buy genuine