In the US, there were no 131s sold here with the (1600 ??) pushrod engines. All 131s sent to the US had 1800 then 2000cc twin cam engines. Yet these larger displacement engines made less HP than the pushrod engines because of all the polution control devices and lower C/Rs.

I'm curious, are the intake manifolds interchangeable between the pushrod and twin cam engines? I was thinking of doing a propane conversion on my 131 and this IMPCO CA-100 mixer/carb seems to be the best choice. 

http://tinyurl.com/6p4lxgs

But it uses a two bolt base instead of a four bolt carb like a twin cam intake manifold. By the time I fabricate an adapter, I'm afraid the bonnet may not shut.

I'm thinking the pushrod engines used a one barrel carb like a Weber 34 ICH or something. So this mixer/carb may bolt right up.

Please forgive me on my lack of 131 pushrod engine knowledge. I know nothing about these engines since they were never sold here.

Thanks. That's what I wanted to know.

I somehow missed that one on Ebay. Some Holley carbed used on Fords back in the 70s (2.3 liter Pintos, Mustangs) were actually rebadged Webers so the bolt pattern may be the same. What effect would using a 76mm carb on a 2 liter create?

My 131 is itching to be turbocharged. It's got the Opel automatic and it's slug. I can stomp the accelerator from a dead stop and if the secondary opens up, the engine shuts off. I'm not sure if the secondary jet is clogged or I'm just asking for the car to do too much. The car has to be going at least 20 mph before I open up the secondary.

Although my 131 is fun to drive, my turbocharged Yugo 1500 and turbo 2000 Fiat Spider runs circles around this thing.

I've turbocharged L-jet and Webers but have no experience with LPG mixers.

If using a non-electronic LPG mixer like the IMPCO which increases gas flow based on manifold vacuum, what would happen under positive manifold pressure? I'd imagine the same thing (engine shuts down) if not having the fuel bowl vent connected to the bonnet or not enough fuel pressure (wrong fuel pump or 1:1 fuel pressure regulator to installed).

LPG is sort of a novelty over here like diesel was back in the 1990s. When I mean novelty, I mean it's like trying to find a petrol station that is open from 12 to 3 in the afternoon in the Italian countryside. Or an AGIP petrol station that is open after 5pm in downtown Torino. This was back in the late 90s. I'm sure this isn't the norm with Italian petrol stations, just from my experience.

I would have to take my car between the hours of 8 and 5 Monday through Friday to have it refilled at a station that just refills LPG bottles. Most LPG dealers are closed on the weekends. There are no petrol stations I know of here in the United States that fill an automotive propane tank.

This can create a hassle. Where as with petrol, I can scan my debit or credit card, pump fuel and be on my way within 5 minutes. With propane I have to go into an office, pay the lady, drive 100 feet to their refilling station, etc. So getting propane tanks filled is something you would have to be dedicated at doing.

But LPG is cheaper. The average cost is about US$2.29 for four liters. Where petrol is about US$3.39 for four liters. The price of LPG usually follows the cost of petrol by a dollar less. CNG is even cheaper but once again because CNG and LPG hasn't caught on here in the US, finding a refilling station can be a challenge.