Alfa Romeo 155

Features

The 155 was available with 1.7 Twin Spark, 1.8 Twin Spark and 2.0 Twin Spark petrol engines, the latter two with variable valve timing. Two four-cylinder turbo diesel engines, a 1.9 (92 PS) and a 2.5 (125 PS) were available in some markets (but not the United Kingdom, however the Republic of Ireland got this version). At the top of the 155 range were the 2.5 V6, using an engine derived from the 3.0 V6 used in the 164, and the Q4, which used a drivetrain derived from the Lancia Delta Integrale , including a 190 PS 2.0 16V turbocharged engine and permanent four-wheel drive. The Q4 also incorporated three differential gears (normal at the front, epicyclic at the centre (including a Ferguson viscous coupling) and torsen self-locking at the rear).<ref name="italiaspeed.com">Template:Citation/core{{#if:|}}</ref>Both the 2.5 V6 and Q4 models were also available with electronically adjustable suspension with two damper settings (automatic and sport). The most notable special edition was the Silverstone edition released in the UK which was known as the Formula in Europe; this was release as an homologation exercise to allow Alfa Romeo to compete in the BTCC with a revised aero-kit. For reasons best known to the Alfa Romeo bosses the car was a lightened 1.8 8 valve Twin Spark model (the touring car being a 2 litre motor) with slightly more power than the standard 1.8, they had either Alfa red or Black paintwork with black unpainted bumpers. The main appealing features of these models was the unique from and rear spoilers, the rear on being fully adjustable.

In 1995 the 155 was given an extensive revamp giving the car wider front and rear track with subtle enlargement to the wheel arches to accommodate the changes underneath. Late Series 1 155's manufactured in 1994 also received the wider track, and may be recognised by their wheels being recessed inside the main bodyline of the vehicle. Other changes included the move to 16 valve belt timed Twin Spark engines from the original 8 valve chain timed units (also the 1.7 was replaced by a 1.6 16 valve Twin Spark) along with revised steering rack and suspension. Series 2 155s can be distinguished from their earlier counterparts by their flared front and rear wheel arches. Some versions in the Republic of Ireland retained the 1.8 8 valve version.