A table listing jet sizes and other parameters applying to carburettors used on Flavia and 2000 engines.  Where these are known more modern alternatives are listed also.


Model Capacity Make Type
Primary


Secondary

Needle Choke Pump Emulsion




Venturi Main Slow
Air
Corrn.
Venturi Main Slow
    Air
Corrn.
Valve jet jet tube
815 1500 Weber DCH1 25 130 50 220 26 130 85 160 175 150/90 50
815 1500 Solex PAIA3 24 125 45 190 26 145 70 190 175 90 50
815
1500/1800
twin
Solex C35
PII2 		28 120/125 50 170



160
40 70
815 1800 Solex PAIA8 24 130 45 190 26 145 70 190 175 120 45
815 1800 Weber 32 DFM 26 150 50 160 27 155 45 140 200
65 F6/F6
815 1800 twin Weber DCN10
& 11 		32 115 55 230



150
45
815 1800 twin Weber DCN 4
& 5 		32 135 or
140 		70 200 or
250



150
45
815 Superjolly
1500		 Solex F35AHD 26 135 55 180



175 125

815 1800 Nardi Weber 36 DCD 7 25 135 55 185 27 145
180 175 150 * F13
819 1500/1800 Solex PAIA14 24 125 45 180 26 140 70 190



819 1500/1800 Solex PAIA8 24 125/130 45 190 26 145 70 190 175 120 45
820 2000 Solex C34 EIES 24 137.5 60 155 26 135 100 145


155/145
820 2000 Solex C36 EIES 28 205 60 130 28 150 150 100


230/220
820 2000 Weber 32/36 DFV 26 160 50 160 27 165 45 140 200

F6/F6
820* 2000 Weber 32/36 DGV 26 140 60 165 27 140 50 160 175 200 50 F50/F50


The alternate Weber instruments may require the choke flap on the secondary venturi to be removed.  The 32 DFM and 32/36 DFV have a similar body to the Solex C34 and C36.  Neither have provision for fuel spillback, nor do they need an electrically operated pilot jet.  The 32/36 DFV has a vacuum connection for a distributor advance control, and this will require blocking off.  The 32/36 is now only available new as the 32/36 DGV with the fuel inlet pipe facing to the offside.  Minor modification will be becessary to throttle lever arrangement and possibly the choke cable if these Weber units are fitted, and in the case of the Flavia 1800 to the air filter flange also (32 DFM).   The 32 DFM has the fuel inlet pointing offside, which means the  fuel hose will foul the  oil filler (see below).

* The 32/36 DGV not only has the fuel inlet pointing offside, but also the accelerator pump mechanism is now on the offside.  Utilising this instrument will require for the oil filler to be adapted so as to be further away from the carburettor.  The top flange has been changed too, although Weber do make a plenum unit which may be adapted to an existing air filter.  Alternatively a bespoke air cleaner unit is available.

* The 36 DCD 7 used on Nardi converted 1800 engines has an accelerator pump bypass jet in the base of the float chamber.  The jet in the unit dismantled had no marking, but measured 0.078 (Morse 47) diameter. This jet has been calibrated to give an optimum squirt of petrol from the accelerator pump.  The emulsion tubes have 4 evenly spaced holes to give good throttle response.  Nardi supplied this conversion together with a lower height cast inlet manifold and an Aurelia type of air cleaner.  This was designed to provide KF injection performance without the associated complication.
Manufacturer's Carburettor information leaflets.

Links to the few readily available historic PDF documents are available where the "type" cell is coloured mauve.   The Weber 32/36 DGV and 36 DCD are currently available and can be found via an internet search.