Technical Carburetors - Mistery…

[genefiat2502]

Good evening,
My name is Gene and I just bought at an auction a Fiat 124 CS1 late 1978.
In the trunk I found a couple of spare double bodied carburetors mounted on an Alquati Cremona manifold. I also found a small radiator. Any clue about these carburetors?
Any help is welcome.
Thank you!

 

[genefiat2502]

Good evening,
My name is Gene and I just bought at an auction a Fiat 124 CS1 late 1978.
In the trunk I found a couple of spare double bodied carburetors mounted on an Alquati Cremona manifold. I also found a small radiator. Any clue about these carburetors?
Any help is welcome.
Thank you!

 

[348azeus]

Don’t recognise those but give Midwest Bayless a call they may know as it looks like their sticker on the filter.

 

[124BC1]

Alquati was a supplier of tuning parts for Italian cars including camshafts, cylinder heads and inlet manifolds. Iirc, Cremona (Italy) was where the Co. was based. Afaik, there were various very similar looking manifolds made to suit different twincam engine, some were for the Fiat t/cam, some for the Lancia t/cam, the differences were subtle e.g. height of carbs when installed, whether engine was slightly inclined, intake runners biased towards one end to provide clearance for some other component e.g. alternator. So, if planning to install this manifold on your car, best check that it is actually correct for your particular car.
Here's a similar manifold from Midwest Bayless but it is listed 'as out of stock'.

Vick Auto list a modern equivalent ;-

The small radiator is called a Heater Matrix, it's fitted inside the heater box/assembly under the dashboard, it connects to 2 metal pipes that protrude through the firewall (bulkhead) and are connected by rubber hoses to the engine cooling system :-

Re - the type of carb, looks like they're Weber DCNF, to find the exact type, clean the carb. mounting flange next to the manifold, the model type, size and the version (iteration) should be stamped into the flange.

 

[genefiat2502]

Thank you very much! I will test the car with its original carb first then will try the Weber. Will keep you informed

 

[124BC1]

I will test the car with its original carb first then will try the Weber.

Personally I'd stick with the original carb.

Maybe offer the Alquati set-up for sale and given that Midwest Bayless say it's very rare, it might be worth quite a bit to a classic Fiat enthusiast/collector. If those carbs are Weber type DCNF 40, these were used on many of the older Ferrari's etc. so possibly might be worth quite a bit on their own?

Back in the early 1970's, Fiat had their own similar manifold and dual twin choke carbs fitted on the European spec. 124 Sport Coupe. Afaik, this dual twin choke carb set-up was not fitted on U.S. spec. 124 Sport Coupes or Spiders.
They didn't give much extra power compared with the single twin choke carb (i.e. 1 carb only) and could be quite troublesome in service and unpleasant to drive unless kept in a top state of tune, also easy to flood the engine when starting if you habitually pump the accelerator pedal several times before starting.
Fiat abandoned the use of 2 x twin choke carbs on these engines after only 2 or 3 years, all later models had just one dual choke carb.

 

[Twink80]

I think these are DCNF carbs
The manifold looks similar to Twincam head but I think they may be off a Lancia which has the engine inclined with the inlet side higher than the exhaust
I have seen Montecarlos fitted with twin DCNF’s but not seen them on a Spider
The parts are rare and can be serviced so valuable. Its worth getting them ultrasonically cleaned before you sell them

Spider Twincams usually run twin IDF’s and there are a variety of manifolds depending where the distributor is mounted

Sidedraft DCOE’s don’t usually fit due to the brake servo, so you either need to move that or convert to RHD!

Guy Croft does excellent reviews of the options and it depends on what you want from your car!

I converted mine from FI to twin 40 IDF’s cos they sound great, once set up are pretty reliable and produce good power and torque.