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Author Topic: which diesel?  (Read 4042 times)

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eomega

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which diesel?
« on: 30 December 2007, 14:30:07 »
hi all im new to the forum and not an omega owner yet but am thinkin about a 98/99 diesel (manual),had a look around here but it seems mostly petrol owners .  i would be interested to hear about views on the 2.2 versus the 2.5     am i right in sayin that from 99 on timing chain is used instead of belt on the diesels,  i would be greatful for any advice or tips. :y
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Pitchfork

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Re: which diesel?
« Reply #1 on: 30 December 2007, 14:32:39 »
The 2.5TD (BMW engine) has a timing chain
IW
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tunnie

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Re: which diesel?
« Reply #2 on: 30 December 2007, 15:08:43 »
from 1994-2000 - A BMW sourced 2.5 Straight 6 diesel was used in Omega's, ALL of them were chain driven.

it was de-tuned for Vauxhall so chipping is a good idea. Manual is best.

2.5's wreck the Autos, to much torque. An Ar35 box is needed instead of AR25.

2000 onwards Vauxhalls own 2.2 DTi (4pot) replaced the BMW 2.5, its generally conisdered a slightly weaker engine and not as smooth, but can be tuned to quick out quite a lot of torque  :y

« Last Edit: 30 December 2007, 15:09:38 by tunnie »
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Marks DTM Calib

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Re: which diesel?
« Reply #3 on: 30 December 2007, 15:19:21 »
Quote
2000 onwards Vauxhalls own 2.2 DTi (4pot) replaced the BMW 2.5, its generally conisdered a slightly weaker engine and not as smooth, but can be tuned to quick out quite a lot of torque  :y


Definately a stronger engine....not sure its possible to get weeker than the BMW power plant.
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tunnie

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Re: which diesel?
« Reply #4 on: 30 December 2007, 15:22:26 »
Quote
Quote
2000 onwards Vauxhalls own 2.2 DTi (4pot) replaced the BMW 2.5, its generally conisdered a slightly weaker engine and not as smooth, but can be tuned to quick out quite a lot of torque  :y


Definately a stronger engine....not sure its possible to get weeker than the BMW power plant.

I think its cause they are de-tuned for Vx, seen many 5 series 2.5 tractors on eBay in inter-sella miles 300k +
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eomega

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Re: which diesel?
« Reply #5 on: 30 December 2007, 15:43:19 »
did the 2.2dti not come out in 98?  got this off honest john

------------------------------------------------------------------------
Three year warranty from October 2000. 2.5 litre 6 cylinder BMW diesel supplemented, then replaced by GM's own 2.0 and 2.2DTi four cylinder chain cam diesels from January 1998.
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Pitchfork

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Re: which diesel?
« Reply #6 on: 30 December 2007, 15:44:13 »
Quote
Quote
2000 onwards Vauxhalls own 2.2 DTi (4pot) replaced the BMW 2.5, its generally conisdered a slightly weaker engine and not as smooth, but can be tuned to quick out quite a lot of torque  :y


Definately a stronger engine....not sure its possible to get weeker than the BMW power plant.
Depends on what you mean by weak!
If you mean power, yes they are de-tuned from the standard BMW spec, but if you mean durability, I suspect that the BMW engine will outlast the VX motor. They are known to last for 300K + miles, although rumour has it that they eat Auto boxes because of the torque, but then this has to be related to how they are driven
My workhorse has now done 135K miles with no problems from the AR25 box. I drive it sensibily, don't play tunes on the gearbox and get around 34 mpg on a run. That's the downside - it's not particularly economic & diesel is more expensive than petrol
Unfortunately, the BMW engine is much derided on this forum, but it is very reliable
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tunnie

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Re: which diesel?
« Reply #7 on: 30 December 2007, 15:48:03 »
Quote
did the 2.2dti not come out in 98?  got this off honest john

------------------------------------------------------------------------
Three year warranty from October 2000. 2.5 litre 6 cylinder BMW diesel supplemented, then replaced by GM's own 2.0 and 2.2DTi four cylinder chain cam diesels from January 1998.

engine may have come out in 98 (not sure) but it was never fitted to Omegas until late 2000 early 2001
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Marks DTM Calib

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Re: which diesel?
« Reply #8 on: 30 December 2007, 16:08:36 »
I personally have found more problems with the diesel than the petrols.....and they are only sought after thanks to the 'BMW' badge.

There biggest Achilles heal is the oil service intervals...6K ish recommended and 3K if you want it to last.

If you don't stick to this then the chains will stretch, the timing will go out and I have seen many of these that have thrown rods!. Throw in the cooling problems, pain in the arse viscous fan, water pumps that shed blades, heads that crack......

If it had any other badge it would be slated.
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davlad22

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Re: which diesel?
« Reply #9 on: 30 December 2007, 16:42:21 »
The king has spoken gentlemen!

A diesel is bought for its reliabilty, strength, economy and extended service intervals. From what i've seen on this forum, these don't seem to be terms in common with the 2.5!?! It is old technology nowadays and frankly any car which needs its oil changing every 4-5 thousand miles these days is just a joke frankly  :o

....but quite prepared to be overuled  ;D
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cem_devecioglu

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Re: which diesel?
« Reply #10 on: 30 December 2007, 16:45:22 »
here are the models for comparison..

http://www.parkers.co.uk/cars/equipment/Summary.aspx?model=985

whatever you buy , buy a fully loaded one..
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davlad22

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Re: which diesel?
« Reply #11 on: 30 December 2007, 17:01:16 »
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whatever you buy , buy a fully loaded one..

Best piece of advice on this forum  ;D  :y

....can the same piece of advice be applied to women?  :-X
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davlad22

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Re: which diesel?
« Reply #12 on: 30 December 2007, 17:07:58 »
Oh, and you won't get a 98/99 2.2 Diesel, they were available in the facelift from 2001 onwards iirc
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cem_devecioglu

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Re: which diesel?
« Reply #13 on: 30 December 2007, 17:15:02 »
Quote
Quote
whatever you buy , buy a fully loaded one..

Best piece of advice on this forum  ;D  :y

....can the same piece of advice be applied to women?  :-X


 ;D ;D  erm..depends.. :-X
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MickAP

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Re: which diesel?
« Reply #14 on: 30 December 2007, 17:23:16 »
Quote
The king has spoken gentlemen!

A diesel is bought for its reliabilty, strength, economy and extended service intervals. From what i've seen on this forum, these don't seem to be terms in common with the 2.5!?! It is old technology nowadays and frankly any car which needs its oil changing every 4-5 thousand miles these days is just a joke frankly  :o

....but quite prepared to be overuled  ;D

Most more knowledgeble than me on here would advise to change the oil on petrol engines that frequently, for longer engine life.

Mick
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