Fiat Dino Forum (FDF)

I read on a Dino book that the type of carburettors of the 2.4 has been changed during the production story from 40 DCNF 6 to 40 DFC 12. I think it meant DCNF 12…What’s the difference between the two? Are the two maintenance kits different ?

Thanks

The difference between Weber DCNF 6 and DCNF 12 is, the DCNF 12 has
two adjustible air bypass needles:


Weber 40 DCNF 6:


Weber 40 DCNF 12

So, if not new air bypass needles are included in a specific service kit,
there should be no differences re gaskets, O-rings and so on.




Dinoswede

Thank you for the wonderful reply. I see that many carburettors kits for Dino are meant for Weber 40 dcnf 13 instead 12. Can you explain me the difference?

Weber carbs 40DCNF 13 and 20 fit to Ferrari Dino 246.

That means they do not fit fiat dino?

My guess is, all Weber 40 DCNF will fit a Fiat Dino. The different versions 13 - 20 are probably
only referring to different jet set-ups, choosen from factory.
Maybe they need to have some of the jets exchanged, to work well in a Fiat Dino - with longer
exhaust systems, making different gas resistance.

The 246GT/GTS sold in USA had a crankcase ventilation device, and the workshop manual
for these shows a diagram table, with some minor differences between the different versions:



Dinoswede