Removing all possible emission controls

[jon8christine]

OK, I think I've got most of this figured out for my 1976 1800 engine. Please help me out with anything else I'm missing in this photo.

https://drive.google.com/file/d/1mw2zzE ... sp=sharing

https://drive.google.com/file/d/1mw2zzE ... sp=sharing

[18Fiatsandcounting]

A couple answers for you, and a thought:

The part labeled as "A" in your picture is the drier unit for the AC, and it likely has a site glass at the top to be able to look for bubbles in the coolant (a diagnostic). One side runs to the condenser (in front of the radiator if I recall), and the other side runs to the evaporator in the passenger compartment.

The part labeled as "6" in your drawing is likely the electrovalve for the fast idle system. The fast idle system is meant to cause an artificially high idle (1500 rpm or so) under certain conditions, for emissions reasons. The test switch for this is that little black push switch right next to it, near the firewall. If the fast idle device is working correctly, the engine idle should increase to around 1500 when you depress that switch. Basically, it's pretty harmless in terms of engine performance, as it simply uses intake manifold vacuum to pull on a plunger on the carb that slightly opens the throttle a bit. It does add clutter, though.

I don't recall the 32ADFA as being a terribly bad carburetor, so if you remove all the emissions equipment and change the carb, it will likely take some effort to get the engine back to running well under all rpm and load conditions. Fiat set it up to run with all the emissions stuff, and when that's removed, a lot of things are now out of "balance" and likely would need to be adjusted. Carb jetting, spark advance, etc.

-Bryan

[Shaun1305]

Alot of the photos are unavailable, anyone have updated on this? Maybe I'll post some pics of the deletes I'm doing

[jon8christine]

Here's the updated diagram of what I did...

https://drive.google.com/file/d/1MGbfGp ... sp=sharing

and after

https://drive.google.com/file/d/1iQO9op ... sp=sharing

It's still not show car worthy by a long way...

[18Fiatsandcounting]

....and after

https://drive.google.com/file/d/1iQO9op ... sp=sharing

Much cleaner in the "after" version, but where did the air horns end up? I can see the compressor, but not the air horns.

-Bryan

[jon8christine]

Air horns have always been in front of the radiator on the driver's side

[18Fiatsandcounting]

Air horns have always been in front of the radiator on the driver's side

Yep, that would work. On my '69 and '71, the original air horn mounting location was just in front of the ignition coil. The studs welded to the body for the air compressor and air horns brackets are the proof. Both are identical. Later models are likely very different.

-Bryan