Omega Owners Forum

Chat Area => General Discussion Area => Topic started by: doog on 19 May 2009, 11:08:10

Title: 2.5 to 3.0
Post by: doog on 19 May 2009, 11:08:10

I plan to swap my existing 2.5 for another one i have which has half the miles and has been better maintained  but i got thinking ... if im going to sway out an engine  would i not be as well fitting the 3.0 v6  as its the same amount of work

so my question is  is it a straight swap? will the ecu etc do fine with the larger engine or should i just save some pennies and fit the 2.5 i already have?

Doug

Title: Re: 2.5 to 3.0
Post by: tmx on 19 May 2009, 12:00:03

its far easier & cheaper to just buy a 3litre MV6 Or Elite mate!

Title: Re: 2.5 to 3.0
Post by: Bumbazor on 19 May 2009, 12:02:30

If you fit a larger engine then you might have to swap the gearbox too. I know on autos going from 2.5 to 3.0 that the original AR25 should be replaced by the AR35. Not sure about manual transmission though but it's worth considering.

Title: Re: 2.5 to 3.0
Post by: tmx on 19 May 2009, 12:04:15

2.5 & 3.0 manual both use the R28 i believe

2.4 Auto uses the AR25 where the 3.0 uses an AR35

its cheaper to just buy a 3litre though you can buy an old preface elite 3.0 or mv6 for £500 even less if you look around at auction

Title: Re: 2.5 to 3.0
Post by: doog on 19 May 2009, 12:07:48

 I have a manual so the box should be fine
is the 3.0 a direct swap?

Doug

Title: Re: 2.5 to 3.0
Post by: tmx on 19 May 2009, 12:11:41

yes it is a straight swap just use all your old 2.5 sensors on the 3.0

Title: Re: 2.5 to 3.0
Post by: Kevin Wood on 19 May 2009, 13:02:49

Quote

yes it is a straight swap just use all your old 2.5 sensors on the 3.0

No need to do that. They are all the same!

Just unplug the engine loom by the battery box and plug in the new one.

Kevin