No, why, oh why, oh why? and where do you propose to stick the tank, on the roof?
IMO waste of time for such a small engine. Will have detrimental affects to engine parts due to fuel mixture and nothing but trouble. It would be a sin
Cost of the actual kit, then constant repairs and the death of the Alfa character is not worth a cent putting any Alfa on gas.
More than a year ago I had my 166 3.0 V6 equipped with a Vialle G3 LPi system in the Netherlands where LPG is a very common used-, highly available fuel. Starts on Petrol and changes smooth, automatic to LPG within a Mile. Bought the car at 155K km's and is now over 185K km's. Until now I had no LPG related problem.
My total investment: 2.500. My daily profit: Every 6.5 km Bella consumes 1 litre LPG @ 0.58 against every 7.5 km 1 litre Petrol @ 1.50. Further advantage: Since LPG burns much cleaner than Petrol the quality off the motor oil remains on a high level.
Disadvantage: Our gouvernment wants to promote cleaner driving and therefore charges me with a 1.116 yearly Road Tax against a 748 running on Petrol.
Alfa's unsuitable to burn LPG? No way. In the eighties of the last Century
I installed myself LPG systems on a Alfetta 1.8 and a 1.6 (Twin Double Carburettor Engines) Other cars suffered from burned exhaust valves because of the higher burning temperature of LPG. Not the Alfa's and the Fiats because LPG was already common use those days in Italy and the Alfa's had Sodium cooled exhaust valves.
The tank is a 72 litre "Ring" tank with a hidden filling nipple behind the registration plate at the rear. The tank is stored in the space where you normally find your spare tyre and has an effective filling capacity of 80%. (55 litres) For that reason I am a frequent visitor of my local gas station. (Every 320 to 350 km's)
In our Dutch 166 club a number of 3.0, 2.5 and even Twinny owners praise the day that they decided to convert their car to LPG. Also 156 2.0 and 1.8 are popular "Gas burners".
Very important is the qualification of the Shop that installs the system and is not neccessarily an Alfa dealer. In our country there is a lot of experience and even German car owners cross the border to have their Gas guzlers converted to LPG. Their waiting list is about 6 months at the moment.
These are the facts. Have a look at the pictures, that's reality.