This is a place to share jetting configurations that we run on our dual-carbed engines.  If you're running dual carbs, please submit your configuration and any comments on how it runs.
DCOE Jet Configurations
Last Updated:12/10/2003
Name Disp. Head CR Valves (In/Ex, mm) Camshaft Header DCOE type Venturis Chokes (mm) Mains Air Correctors Emulsion Tubes Idle Jet Idle Air Pump Jet Exhaust Valve (?) Comments
Myron Samila 1500cc           45DCOE   36 140 170 F15          
Scott Phelps 1301cc Yugo 9.8:1   FAZA 35/75 Ansa 4-2-1 40DCOE   32 120 180 F16 45 F9 35 80  
Eric Armstrong 1290cc Yugo     Unknown Stock 4-2-1 40DCOE     112 220 F16 50 F11      
DCNF Jet Configurations
Last Updated: 3/8/2002
Name Disp. Head CR Valves (In/Ex, mm) Camshaft Header DCNF type Aux Air Venturis Chokes (mm) Mains Air Correctors Emulsion Tubes Idle Jet Accel Pump Cams Pump Jet Starter Jet Comments
Scott Phelps 1500cc Yugo (lightly ported) 10.0:1   FAZA 40/80 IAP 40DCNF 4.5 32 125 190 F24 50 big (11?) 45 75F5 83.4 hp @ 6250 rpm, 82.5 lb/ft @ 4750 rpm, Peak @ Rear Wheels
Mark Scholz 1500cc 1300 ported, shaved .035"   40/stock Alquati 50/70 Stock 4-2-1 40DCNF12   32 125 195 F25 50       Pending Install
Eric Armstrong 1290cc Yugo     Unknown Stock 4-2-1 40DCNF   32 125 195 F25 50       Prior to DCOE Install
Dave Meredith 1290cc           40DCNF   30 125 200 F22 45   40    
Mike Richmond 1500cc Yugo     Stock USA Stock 4-2-1 36DCNF   26 112 190 F36 45        
OEM as provided Fiat Dino V6 2400cc             4.5 32 125 220 F24 50   45 75F8  
"As Fitted" per FLU Ricambi Article March/April 1995               4.5 32 115 220 F30 50   45 75F5  
PBS Recommendations               4.5 32 130 200 F24 55   50    
Ron Collins' X1/9 Racing Prep Handbook for Street Prepared Auto-X               4.5 32 125 220 F24 50 2.95mm 45    
FLU Ricambi Article May/June 1995 Auto-X Car 1290cc           36DCNF 4.5 29 120 185 F36 or F30 52   40    
British X1/9 Club Booklet, Issue No.15               2.5 (short) 32 145   F24 55   40    
George Emery 1500cc 1500 (lightly ported) 11.0:1   PBS S-2 FI 4-2-1 Exhaust Manifold 40DCNF 4.5 30 130 200 F30         Alternate config is:   32 Choke, 190 Air Corrector