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Author Topic: engine difference  (Read 864 times)

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hitcho

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engine difference
« on: 06 November 2009, 15:21:07 »

hi looking at buying a 2.5 v6 just wondering if there is a difference in the engine at all when they changed to the new shape as i had a V reg old shape a couple of years ago and i was never away from the petrol station i also fancy a 2.2 but there is less power in them cheers.
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tunnie

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Re: engine difference
« Reply #1 on: 06 November 2009, 15:23:02 »

2.5 was updated in 1998 i think, various upgrades to make it smoother. Not changed for the later shape.

2.2 is reliable and smooth for a 4 pot, but does lack power. It depends what you do, at the moment i just sit on the motorway for 3 hours a day, and the 2.2 will sit at 80mph alllllll day long, just as easily as the V6  :)
« Last Edit: 06 November 2009, 15:23:25 by tunnie »
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cruisetopoland

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Re: engine difference
« Reply #2 on: 06 November 2009, 15:31:36 »

I have the 2.2 auto and its quicker than I thought it would be, given the kerbweight of the car.

You need more revs than the V6s to get it going, but I find it goes very well in kickdown and gives 28-30mpg average.
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cruisetopoland

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Re: engine difference
« Reply #3 on: 06 November 2009, 15:32:41 »

Quote
2.5 was updated in 1998 i think, various upgrades to make it smoother. Not changed for the later shape.

2.2 is reliable and smooth for a 4 pot, but does lack power. It depends what you do, at the moment i just sit on the motorway for 3 hours a day, and the 2.2 will sit at 80mph alllllll day long, just as easily as the V6  :)

Also, as Tunnie says-once up there, there is no difference apart from mpg.
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hitcho

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Re: engine difference
« Reply #4 on: 06 November 2009, 20:52:06 »

thanks for all your replys i might look out for a 2.2 now all you advice has been great
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cruisetopoland

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Re: engine difference
« Reply #5 on: 06 November 2009, 22:35:29 »

I am only recently an Omega convert, have a 2.2 nearing 100k which has had the usual issues at this age/mileage-has been through workshop for the following (may be useful to look out for/negotiate price with when you look at cars):

Major service with plugs, pollen filter etc
Engine flush, new oil and filters
Rocker cover gasket replaced
New discs/pads all round
Swapped tyres around/balanced/tracked-was tramlining
Replaced wiper blades
Replaced tatty remote key outers and batteries
Tech2 read and ECU/box update at VX
Cruise stalk fitted and enabled
Replaced fuel release motor
Replaced horn
Greased everything, sorted a few squeaks
Noisy door strap washer replaced
Valet/t-cut/polish/Rain-x
Some minor dings/bumper marks cut and touched in

Now getting there and being assisted by helpful forum member this weekend to do the last bits;
Replace headlight inners/whole units-adjusters bust
Another short oil change to cure top end rattle
Coolant change
ATF/gasket change
Boot release mod

It has taken some work but is now coming together nicely-I would recommend a decent refurb budget if you want it "right" and would say you would do well to ask advice on here re: buying before you part with the cash.

Happy hunting  :y
PM if you have any 2.2 specific queries-I'll do my best to help.
« Last Edit: 06 November 2009, 22:42:40 by geoffharvey »
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Boracic

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Re: engine difference
« Reply #6 on: 06 November 2009, 23:04:10 »

I remember a guy at work bought a 2.2 and asked me if my 2.6 was gutless like his 2.2, no doubt you will find out if its fast enough when you test drive it, but he was always moaning about how bad it was on petrol, he was not happy when he found out my 2.6 was not much worse on petrol
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cruisetopoland

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Re: engine difference
« Reply #7 on: 06 November 2009, 23:12:57 »

Quote
I remember a guy at work bought a 2.2 and asked me if my 2.6 was gutless like his 2.2, no doubt you will find out if its fast enough when you test drive it, but he was always moaning about how bad it was on petrol, he was not happy when he found out my 2.6 was not much worse on petrol

I'm not blindly sticking up for 2.2s-but I would never say mine is underpowered (if you rev it)-it is well "run in", immaculately serviced, tyres at correct pressure and bang up-to-date with software etc-I suppose this helps somewhat.

The consensus seems to be that the 2.6 V6 manual is a great balance of power/economy, but I could not find a good one locally at the time and I am pleased with my 2.2.
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Rockhampton

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Re: engine difference
« Reply #8 on: 06 November 2009, 23:19:50 »

Quote
Quote
I remember a guy at work bought a 2.2 and asked me if my 2.6 was gutless like his 2.2, no doubt you will find out if its fast enough when you test drive it, but he was always moaning about how bad it was on petrol, he was not happy when he found out my 2.6 was not much worse on petrol

I'm not blindly sticking up for 2.2s-but I would never say mine is underpowered (if you rev it)-it is well "run in", immaculately serviced, tyres at correct pressure and bang up-to-date with software etc-I suppose this helps somewhat.

The consensus seems to be that the 2.6 V6 manual is a great balance of power/economy, but I could not find a good one locally at the time and I am pleased with my 2.2.
I set my sights on a 2.6 and it took me a while to find one - now that it's pretty much sorted, I'm happy with it, and the fuel consumption is on par with my previous 2 litre Fiat, and it's better than my Saab 900 was. I never expected it to be great around town, but on a motorway, it's pretty decent. Having said that, I've driven a 2.2, and was pleasantly surprised with the performance on what is essentially a heavy car  :y
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Previous GM Models include '00 Omega 2.5 CD Auto, '06 Holden Commodore Executive 3.6 Auto, '99 Astra 1.8 CDX Auto, several Astra Diesels.
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