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Omega Help Area => Omega General Help => Topic started by: kev2b4 on 06 September 2012, 19:14:58

Title: possible 2.5 engine swap MFL manual to FL auto
Post by: kev2b4 on 06 September 2012, 19:14:58
essentially as title -
1/ had a FL CDX estate 2.5 petrol auto-- which I have managed to 'lose'  a head gasket.
2/ bought a MFL - tourer 2.5 petrol manual - tatty,scratched etc., 105k miles on clock, engine 67k only ( must have been one of the 80K! cambelt failures - as on the receipt Vauxhall paid 20% towards replacement engine!)- bought it mainly as immediate run-around - with possibility of putting engine in the FL - when the tourer fails mot miserably in oct.( or if not will continue running around in it).

Question -- Is it as simple as :-
a) remove engine /gearbox from each car
b) swap gearboxes ( as would prefer to have the auto in the FL)
apart from silencers etc. ( cats on mfl are better than the FL - so will swap best of most bits to the FL)-
I assume the engine management magic boxes are the same- so it maybe as simple as a bit of spanner work?
Title: Re: possible 2.5 engine swap MFL manual to FL auto
Post by: TheBoy on 06 September 2012, 19:43:48
Yes, just swap mechanicals, not ECUs/wiring.

There is a bearing on back of manual engine you need to pull out to fit autobox.
Title: Re: possible 2.5 engine swap MFL manual to FL auto
Post by: JamesV6CDX on 06 September 2012, 19:46:46

There is a bearing on back of manual engine you need to pull out to fit autobox.

Don't I know it!! Completely forgot this was there, yesterday. Ended up taking box back off to find out why it wouldn't meet the block  :-[ ::) ;D
Title: Re: possible 2.5 engine swap MFL manual to FL auto
Post by: kev2b4 on 06 September 2012, 20:33:23
not too bad then!

use engine crane, and remove the air con stuff - doesn't work on either car anyway - for a bit of space,
then figure out which wire goes where!

The FL with dead engine - originally had camshaft sensor failure- new ( genuine didn't resolve ) - so might consider changing the engine magic box with the known good one from the donor.

Thanks for the info.

James , by the way the dead FL is the one you did timing belt on in Feb this year,
Title: Re: possible 2.5 engine swap MFL manual to FL auto
Post by: TheBoy on 06 September 2012, 20:57:04
If you swap ecus, it'll need reprogramming due to auto/manual configs
Title: Re: possible 2.5 engine swap MFL manual to FL auto
Post by: The Red Baron on 06 September 2012, 21:03:53
flywheels the same then?. ???
Title: Re: possible 2.5 engine swap MFL manual to FL auto
Post by: Andy H on 06 September 2012, 21:09:07
flywheels the same then?. ???
Same as what?
Automatics don't have a flywheel, they have a flex plate (which has the starter ring gear on it's rim).

The torque converter bolts to the flex plate and is plenty heavy enough that the engine doesn't need a flywheel as well.
Title: Re: possible 2.5 engine swap MFL manual to FL auto
Post by: TheBoy on 06 September 2012, 21:09:15
flywheels the same then?. ???
Auto won't have flywheel - that needs to stay with manual box.
Title: Re: possible 2.5 engine swap MFL manual to FL auto
Post by: The Red Baron on 06 September 2012, 21:17:04
flywheels the same then?. ???
Auto won't have flywheel - that needs to stay with manual box.
thus being my point, hope op knows this. thats all. ;)
Title: Re: possible 2.5 engine swap MFL manual to FL auto
Post by: 2woody on 06 September 2012, 23:16:59
don't forget to take off the adaptor ring behind the flex-plate