Technical Oil issue

[Goldnrust]

These are some photos of our engine. There's a cracked part, is that connected?

Or main question is? Is it SAFE to drive? or could this cause damage to the engine or anything else? We'll have to find a mechanic around but I wonder how many fiat 500 classic specialist there are in Portugal

The cracked part pictured is part of the air intake. It will have no impact your problem. Worst case the cracks allow a small amount of un-filtered air into the engine, which over time could cause wear. In reality its unlikely to cause a problem.

I think that video answers the question of where the oil is coming from! As @ZaphodB mentions, there is air pressure building up in the crank case, which is popping the dipstick out. There are two reasons for this; either the breather is blocked or there is excess combustion pressure making it's way into the engine.

Try removing the breather tube, the green translucent tube on top of the valve cover. With the engine running, and revved up, you should feel a stream of air coming out of the valve cover? Does the dip stick still pop out?

 

[the hobbler]

The cracked part pictured is part of the air intake. It will have no impact your problem. Worst case the cracks allow a small amount of un-filtered air into the engine, which over time could cause wear. In reality its unlikely to cause a problem.

I think that video answers the question of where the oil is coming from! As @ZaphodB mentions, there is air pressure building up in the crank case, which is popping the dipstick out. There are two reasons for this; either the breather is blocked or there is excess combustion pressure making it's way into the engine.

Try removing the breather tube, the green translucent tube on top of the valve cover. With the engine running, and revved up, you should feel a stream of air coming out of the valve cover? Does the dip stick still pop out?

The fact that the engine has a dynamo and the outlet for the heater-air into the car seems to be coming out of the BACK of the thermostat housing, would leave me to believe that it IS a 500 engine. A safety comment---PLEASE REMOVE THAT FUEL FILTER OVER THE DYNAMO. fi that should leak, petrol will drip on to the dynamo--a good way to start a fire! You already have 3 fuel filters in the system--you do NOT need a 4th.