Finished the 166
Join Date: Feb 2008
Location: New Zealand
Re: V6 2.5 or 3.0 24v engine swap
Umm I may be talking porky pies here, but......
A late series 155 and the early 156 share an ECU. So it is entirely feasible to get a 24v V6 off a dead 156 + its ECU, and just drop straight in. The water ports, mounting point etc are commo to both cars, and there is no problem with gearbox mating either. The 156 24V is significantly lighter than the 155 12v V6, which makes the beast even more sprightly, and more prone to a sidewinding takeoff at the lights.
The ecu plugs straight in - on 156's they live under the passenger glovebox ala the 164, but in the 155 they hide behind the fusebox, which is releaseable using a screw.
remapping is not necessary.
if you are feeling very very very mental, it is physically possible to plug a 3.2 V6 off a 156 GTA into a 155, always presuming you can find one....since the GTA is a series 1 156, the same rules apply.
The experts in this kind of Skullduggery are Glenwood Alfa in South Africa, best known for the garrett-turbo 3.0L V6 GTV's of the late 80's early 90's, the positively mental 3.7L 166, and the 3.7 Glenwood 156 GTA.
Dunno if this helps or confuses.....