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Author Topic: v6 - 2.5 vs 3.0 - Thoughts  (Read 7575 times)

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tunnie

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #15 on: 09 December 2006, 18:19:00 »
i think as Theo pointed out, manual vs auto is a better discussion really.

Having owned a 2.5 Auto, i was very impressed by the smoothness of the engine. I have driven TB's 3.0 MV6 and that was just as smooth, amazing considering its done 130k..

However i felt my 2.2 manual felt a lot more perkier compared to the 2.5 Auto...

I'll have to agree with Laidback.... 3.0 MV6 manual is by far the best option... and my idea Euro trip car
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sounds2k

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #16 on: 09 December 2006, 19:26:41 »
well, my old miggy (1999 'T' reg - so it was after the engine changes) was a 2.5 as they do seem to be more plentiful (along with 2.0's) compared to the 3.0's.

However when I got replaced I went for a 3.0 and am glad I did ... didn't notice any difference in smoothness between the two lumps but the 3.0 is definitely faster (and thirstier) than the 2.5 ... if I get an estate it will be a 3.0 !!
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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #17 on: 09 December 2006, 19:50:29 »
All v6 units equally smooth if looked after.

3.0/3.2 is more effortless on power, obviously faster, but uses more fuel.

However, one that has not been looked after will take some work to get it back in tip top condition.

My 136k 3.0 is silky smooth :)
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omegaV6CD

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #18 on: 09 December 2006, 21:37:31 »
Quote
I'm looking out for a new Omega soon, unfortunately I just missed one on eBay,

As per title, I'm looking for thoughts on the differences between 2.5 and 3.0's. Eg fuel consumption, accelleration, top end speed, reliability differences, so on....



Sorry i missed the reliability bit, so i have to say from an engineers point of view that the 2.5 will have stronger bottom end and produces less noise, this is the fact, if anyone needs a technical explenation  PM and i will give it i'm bored to write at the moment hehehe ;D
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Markjay

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #19 on: 10 December 2006, 08:46:27 »
I don't quite understand this, but if you support me on the 2.5/2.6 then I agree!  :y


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Kev

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #20 on: 10 December 2006, 10:14:44 »
It's gotta be the 3.0, anything less is, well, less.  ::)

As regards the Auto, i can personally recommend it on the 3.0 v6. Mines has shown up many a rival, effortlessly.  ;) You also don't have to 'plan' to overtake as Matt suggests, not mine anyway, you just accelerate and she goes, quickly. Far better than the 'foot on the clutch, change gear, foot off the clutch and accelerate' pish. Besides as everyone here will surely agree, if you get the Auto you'll know that you have a real gearbox.  ;)
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Omega-MV6

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #21 on: 10 December 2006, 10:44:38 »
Must be just mine then... but the Gearbox does need an oil change :y

The advantage of a Manual is you can go straight to the gear you want... wereas the auto steps down a gear, and if you want to really gun it, it steps down another gear, and then another one, if you really want to gun it.
There is a very slight delay in that process... hence the requirement to plan... :D

Plus when the engine is at the red line there is a slight delay in changing up, it's not as instant as the manual, you have to factore that in when you are going to gun it, and overtake. :)

Cheers.

Matt
 

EDIT: Bearing also in mind, that mine is a 98 Model, so maybe the newer ones have better auto boxes too... :)
« Last Edit: 10 December 2006, 10:47:23 by Omega-MV6 »
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Kev

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #22 on: 10 December 2006, 10:53:01 »
Quote
wereas the auto steps down a gear, and if you want to really gun it, it steps down another gear, and then another one, if you really want to gun it.
There is a very slight delay in that process... hence the requirement to plan...
I think that's just indecision in how much you're pressing the pedal. Just push it right down as far as it'll go. The car will get the correct gear first time. :y

Mine's also doesn't appear to suffer from the changing at the red-line issue.  ::)
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Omega-MV6

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #23 on: 10 December 2006, 11:05:24 »
Quote
Quote
wereas the auto steps down a gear, and if you want to really gun it, it steps down another gear, and then another one, if you really want to gun it.
There is a very slight delay in that process... hence the requirement to plan...
I think that's just indecision in how much you're pressing the pedal. Just push it right down as far as it'll go. The car will get the correct gear first time. :y

Mine's also doesn't appear to suffer from the changing at the red-line issue.  ::)

haha indecision.. yeah right... ;D
It goes to the floor, all the way...

I wonder whats wrong with the Auto Box in mine then... it seems to linger around the red line for a second or too before changing up.... :-/


Maybe it's the Oil Change requirement...

Matt
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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #24 on: 10 December 2006, 11:10:54 »
Biggest downside of our autos is that the gears are a little long - 50mph in 1st, 85mph in 2nd etc.

If you have a flashable gearbox, I recommend a quick 5 mins on a Tech2 getting new software on the box - made a noticible difference to my 98 MV6.
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Omega-MV6

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #25 on: 10 December 2006, 11:14:22 »
How does one know if it's flashable?

And how do you get the software for it?

Cheers.

Matt
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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #26 on: 10 December 2006, 12:23:59 »
Quote
How does one know if it's flashable?

And how do you get the software for it?

Cheers.

Matt
Yet to fully prove that its mini facelift (MY 98) onwards, but that seems likely.

Anyone with a Tech2 should have the software (via TIS)
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theolodian

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #27 on: 10 December 2006, 14:39:56 »
Quote
Quote
wereas the auto steps down a gear, and if you want to really gun it, it steps down another gear, and then another one, if you really want to gun it.
There is a very slight delay in that process... hence the requirement to plan...
I think that's just indecision in how much you're pressing the pedal. Just push it right down as far as it'll go. The car will get the correct gear first time. :y

Mine's also doesn't appear to suffer from the changing at the red-line issue.  ::)
If I floor mine at 15-20mph (edit) it seems to stay in 2nd and slowly winds up from 2-3K rpm.  Bloody useless when pulling out into traffic.  If I accelerate out of a 30 zone into a 60 zone it upshifts to 4th 1-2 secs after I push the pedal down halfway and then struggles to pick up speed without pushing the pedal way down and using a lot of fuel.  If you use sport mode it works better, except that it doesn't go into 4th until over 60 and shunts in with a thunk at very light throttle.  Other than those things it works pretty well for an Auto.
« Last Edit: 10 December 2006, 16:25:34 by theolodian »
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sounds2k

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #28 on: 10 December 2006, 17:39:19 »
well after driving Mick's 2.6 manual today, I can say that it didn't feel quite as quick as my 3.0 auto - but I didn't notice any difference in smoothness between the two engines. It was nice to have a manual box again, the clutch wasn't very heavy which is good news for me!!

... so now I need to find a 3.0 manual estate, hmmm I think that may take a while unless I opt for an ex-plod ...
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MikeDundee

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Re: v6 - 2.5 vs 3.0 - Thoughts
« Reply #29 on: 10 December 2006, 17:47:33 »
Quote
well after driving Mick's 2.6 manual today, I can say that it didn't feel quite as quick as my 3.0 auto - but I didn't notice any difference in smoothness between the two engines. It was nice to have a manual box again, the clutch wasn't very heavy which is good news for me!!

... so now I need to find a 3.0 manual estate, hmmm I think that may take a while unless I opt for an ex-plod ...

quite as quick? LOL...after all the grub the extra weight in the car obviously affected the result?.....then again might have just been too much hard work for you, using a manual, after being used to the auto? ;D
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