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[laney101]

My 2003 omega 3.2 v6 is due its cambelt again on 137k.

I know there are variations om cambelt kit for v6 what are they ??

Im looking at Conti ct990k1 Timing Belt Kit+Water Pump VAUXHALL OMEGA B Vectra B 2.5 - 3.2 V6

Good price good brand but unsure if correct style as they do a ct990k2 version

[Kevin Wood]

As long as it's for the right engine family you can make any variant of the kit work. You might need to swap the upper 2 pulleys over to the backplate already on the engine and, on the later 2.6/3.2 you might end up with an adjustable lower pulley where the original was fixed but it should fit.

[biggriffin]

Er ya go
 https://www.ebay.co.uk/itm/VAUXHALL-OMEGA-B-2-6-Timing-Belt-Kit-00-to-03-2062845RMP-Y26SE-Set-QH-Quality/232591001103?epid=19005739529&hash=item362781060f:g:hDsAAOSwfEdbwilf

[laney101]

I wont be buying a QH one haha and want waterpump also so contiential kot is worth money considering all comes in one kit..

But was wanting to know which one i needed as dont want to have to swap and change things around etc just swap and fit right kit

[Kevin Wood]

If you want an exact match for your engine you need to match it against the engine number as there were several different variants of the 3.2 kit.

But.. it really isn't an issue to swap the pulleys to your original casting and the kits for the older engines often go for silly cheap prices as I suspect the demand is falling off for these.

[biggriffin]

QH, kit uses skf bearings and gates or Conti belt, swapping the back plates is all you do,...

[Kevin Wood]

QH, kit uses skf bearings and gates or Conti belt, swapping the back plates is all you do,...

Yep, every variety of kit I have seen has had exactly the same SKF bearings. It really doesn't matter what make you pick.

[Enceladus]

Good price good brand but unsure if correct style as they do a ct990k2 version

Contitech kit CT900K1 is for engine number to 08578511.
Kit CT990K2 is for engine number 08578512 on.
As yours is a 2003 2.6 it's likely the later engine.
The difference appears to be that the later kit has no eccentric on the lower roller. As already said the roller with eccentric can be fitted, it's just more fiddly.

Neither of the Contitech kits conain the water pump. I think you'll have to buy that separately, unless somebody does a bundle.

There's a Contitech CT990K2 kit available here for £65 delivered or make an offer.

Or consider a Gates kit that includes a water pump.

[Kevin Wood]

Yep, no V6 cam belt kits include the water pump as it's not even driven by the cam belt.

Given the quality of recent factor water pumps (and I think a few gen ones have died early too) I personally wouldn't change a V6 water pump unless it failed.

It's quite unlikely that it'll disturb the cam belt if it does die.

[robson]

That kit suggested has no belt.

[Enceladus]

That kit suggested has no belt.

That's a pity. I missed that the belt was not included. So that adds about £25 to get the belt elsewhere.

[laney101]

The kit i found comes with waterpump. Not made by conti bit aupplier of parts sells it with a waterpump.

Ill check engine number and buy right lit for engine with waterpump.

Yes all may use skf bearing but i trust conti or gates belts.

And for 150 all in with waterpump i think thays a fair price..

But i shall still shop around

Also mine a late 3.2 not 2.6

Id rather not be swapoing back plates etx

Wateprump issue dont buy a cheap one haha i swapped three on omegas v6 ive done always at cambelt and never had issues.. this had pump done at 75k with belt last time when my dad had car ...

It be getting swapped silly not to while belt being done

[laney101]

quick question then as side note

if thinking of having heads of and a skim before fitting new cambelt would it be worth using earlier kit with adjustable lower pulley. Im guessing buy early kit with eccentric lower pulley. Leave the top big plate on my engine swap new pulleys onto it and use adjustable lower pulley. As thinking of giving heads a good skim say 0.5mm maybe smidge more need to work it out... as wanting to get CR uo to 10.8.1

[BazaJT]

Kit I bought about 3yrs ago off e-bay had contitech belt SKF bearings and came with a German brand waterpump[with a metal impellor]was roundabout £50.Out of interest why do you want to raise CR?

[laney101]

Im doing loads of woek over course of next year to v6

Compression raise
Fast road cams.
Mild porting
Exh manifolds
Sports cats
And eithe piggyback ecu or aftermarket

So compression ratio raise to original v6 spec is what im going for... 3.2 and 2.6 were lowered for emissions and other stuff.. 3.0 and 2.5 had high comp so taking it to that before i start anything else

[biggriffin]

Im doing loads of woek over course of next year to v6

Compression raise
Fast road cams.
Mild porting
Exh manifolds
Sports cats
And eithe piggyback ecu or aftermarket

So compression ratio raise to original v6 spec is what im going for... 3.2 and 2.6 were lowered for emissions and other stuff.. 3.0 and 2.5 had high comp so taking it to that before i start anything else

 


Fit 2.5 heads

[Enceladus]

Fit 2.5 heads

Do the 2.5 heads have the mounting holes for the ignition modules? '98 onwards maybe?

[Kevin Wood]

Fit 2.5 heads

Do the 2.5 heads have the mounting holes for the ignition modules? '98 onwards maybe?

Later ones do, but why not use 2.6 heads? they are the same, IIRC, and the compression was reduced by pocketed pistons.
The smaller engines heads will need some porting to give full performance too.

[JamesV6CDX]

QH, kit uses skf bearings and gates or Conti belt, swapping the back plates is all you do,...

Yep, every variety of kit I have seen has had exactly the same SKF bearings. It really doesn't matter what make you pick.

This

[laney101]

2.5 and 2.6 head dont use the sodium filled valves... and as u say require fair bit of porting

Soo just easier to remkve my std heads have a good skim decoke.. rrcut seats relap valves and jist port match heads

Should make nice difference even if jist returns it to what its lost haha

[Kevin Wood]

True. If you skim them yourself you can get exactly the compression you want too.
You just have to make sure the intake manifold will still bolt up in the valley with no leaks.

[JamesV6CDX]

You just have to make sure the intake manifold will still bolt up in the valley with no leaks.

From bitter experience, this is a real, real issue with anything more than lightly skimmed heads.......

[Kevin Wood]

You just have to make sure the intake manifold will still bolt up in the valley with no leaks.

From bitter experience, this is a real, real issue with anything more than lightly skimmed heads.......

Back to 2.5 heads, then.

[Nick W]

You just have to make sure the intake manifold will still bolt up in the valley with no leaks.

From bitter experience, this is a real, real issue with anything more than lightly skimmed heads.......

Geometry is a bitch isn't it?

[laney101]

You fit extra gasket between lower manifold and head if needed or slacer plate wkth gasket (like a decomp plate but for inlets..

OUT OF curiosity has anyone skimmed heads om these whats the limit before intake fitment becomes a issue

[Doctor Gollum]

Less than 2 thou of an inch iirc

[henryd]

Less than 2 thou of an inch iirc

2 thou wouldn't even clean a head up as its so little

[cam.in.head]

Other issue worth mentioning is you are still probably better off going for an earlier cam belt kit with the adjustable lower pulley rather than the correct one for your car as it stands now.reason being if you do end up skimming heads then a non adjustable pulley may leave you with valve timing slightly out and no way to get it right on that bank.

[Enceladus]

Other issue worth mentioning is you are still probably better off going for an earlier cam belt kit with the adjustable lower pulley rather than the correct one for your car as it stands now.reason being if you do end up skimming heads then a non adjustable pulley may leave you with valve timing slightly out and no way to get it right on that bank.

In that case the cheapest way to get a kit, with an adjustable bottom guide roller, is apparently to buy two of the below kit. Remove the required roller from the surplus backplate and if necessary reuse the washer currently on the engine. That also gives you a spare belt in case you disturb the cams again. Total outlay £39.98. Possibility of 5% off as well.

If the tensioner/roller backplate in the kit doesn't fit your engine then it's fine to swap the upper roller and the tensioner roller from the kit onto your existing backplate.

Other members on here have previously reported doing this. The bearings are the same SKF ones used in other kits. AC Delco is GM's own brand so the quality of the belt is going to be at least as good as any of the others.

AC Delco Timing belt kit Vauxhall Vectra Calibra Cavalier 2.5 Omega 2.5 2.6 3.0 @£19.99 ea delivered.

[Kevin Wood]

Tried ordering one of those before. They insisted on asking for my registration number then claimed it wasn't compatible with my car. I told them I wanted the pictured kit regardless, and they told me I needed an alternative kit for £hundreds.  P.O. pill administered. It's a scam IMHO.

Other issue worth mentioning is you are still probably better off going for an earlier cam belt kit with the adjustable lower pulley rather than the correct one for your car as it stands now.reason being if you do end up skimming heads then a non adjustable pulley may leave you with valve timing slightly out and no way to get it right on that bank.

In that case the cheapest way to get a kit, with an adjustable bottom guide roller, is apparently to buy two of the below kit. Remove the required roller from the surplus backplate and if necessary reuse the washer currently on the engine. That also gives you a spare belt in case you disturb the cams again. Total outlay £39.98. Possibility of 5% off as well.

If the tensioner/roller backplate in the kit doesn't fit your engine then it's fine to swap the upper roller and the tensioner roller from the kit onto your existing backplate.

Other members on here have previously reported doing this. The bearings are the same SKF ones used in other kits. AC Delco is GM's own brand so the quality of the belt is going to be at least as good as any of the others.

AC Delco Timing belt kit Vauxhall Vectra Calibra Cavalier 2.5 Omega 2.5 2.6 3.0 @£19.99 ea delivered.

[cam.in.head]

Ive had 6 of those kits. They did ask for the reg number on ordering like a lot of sellers do but ignored the message and ordered anyway. All arrived and was fine. Maybee ebay have changed the ordering process now.they do keep mucking about with things.
It might work if you just put in the reg number of a car that it would definately fit !
Otherwise it’s a shame cos at £40 a kit it’s a good price and a way a lot of us have done it I beleive.

[Kevin Wood]

Yep, agreed it's a good price.

I might try again when / if my car makes it to its next cam belt change.

It really left me with the impression that they didn't have any £19.99 kits and it was just a ruse to sell much more expensive kits but your experience indicates otherwise.

[JamesV6CDX]

Yep, agreed it's a good price.

I might try again when / if my car makes it to its next cam belt change.

It really left me with the impression that they didn't have any £19.99 kits and it was just a ruse to sell much more expensive kits but your experience indicates otherwise.

I’ve had plenty at that price. I just message him saying there’s no index but I know what I’m buying and I accept it’s on a no return basis

They always arrive

[laney101]

Ive found a full kit for 40 quid with adjustable lower wheel

So basically leave roller plate on engine swap with new wheels out of new kit ... then swap lower wheel for the new adjustable type..

Groovy

Gonna get heads of next week i think .. go for nice skim then have ally plates made to take difference up from skim for manifold to fit

Seal them like sealing a decomp plate on to ally head then manifold seal against plate just like it was head ..

Port match heads to manifolds..
Insert cams and do belt and should just be a nice rejuvination