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About Highwood

dotCurrency Assistlf

Chris Sweetapple sales@highwoodalfa.com    

www.highwoodalfa.com

Highwood Motor Co
27A Wellfield Bishopston Swansea SA3 3EP.
Great Britain
Phone
(+44)1792-234314
fax
(+44)1792-234514,
mobile
(+44) 7831-160480

 

Highwood Motor Co 27A Wellfield Bishopston Swansea SA3 3EP.  Great Britain
Phone (+44)1792-234314,     fax (+44)1792-234514,      mobile (+44) 7831-160480,       www.highwoodalfa.com

Alfa Romeo spare parts on the Internet since 1996       sales@highwoodalfa.com

Alfa Romeo Giulia Sprint GT stepnose

First chart shows data for Alfa Romeo 105 series. GTA versions and and 101/750 , see second chart  At the bottom of the page you will find a drawing of the different jets. If you copy the sites, please rmember where you got it, thank you.

105-series data

Part name 1300 105series 40DCOE28 1600
105 series 40DCOE27		 1600
105 series 40DCOE4		 1600
Giulia Super 40DCOE24		 1750 40DCOE32 2000 40DCOE78 *note
Venturi 28 30 30 27 32 32
Aux. venturi 4,5 4,5 4,5 4,5 4,5 4,5
Main jet 112 120 127 110 130 135
Air corr jet 210 180 220 180 200 210
Emulsion tube F-16 F-16 F-16 F-16 F-9 F-34
Idle jet 50F11 50F11 50F11 50F11 50F8 55F17
Starting jet 65F5 65F5 65F5 65F5 65F5 65F5
Needle valve 150 150 150 150 150 150
Acc. pu,p jet 35 35 35 35 35 35
Acc. pump bypass 60 60 50 50 60 60
Note. 40DCOE 72, 73, 76, 77, 80, 81 have different internal circuits. Jettings in these carbs cannot be applied to previous 40DCOE type carburetors.

101 / 750 and GTA series data

Part name 1300 Veloce 40DCOE2 1600 Veloce 40DCOE2 1300 GTA jr 45DCOE18 1600 GTA 45DCOE14
Venturi 29 30 30 30
Aux. venturi 4,5 4,5 3,5 4,5
Main jet 110 115 120 135
Air corr jet 200 180 220 220
Emulsion tube F-16 F-16 F-9 F-16
Idle jet 50F11 55F11 50F8 55F8
Starting jet 60F5 65F5 65F5 65F5
Needle valve 150 150 150 150
Acc. pu,p jet 35 35 35 35
Acc. pump bypass 50 70 50 50

 Idle jet code

Air jet Diameter in mm F code
0,70 F6
0,90 F12
1,00 F9
1,20 F8-F11-F14
1,30 F13
1,40 F2-F4
1,60 F5
1,70 F7
2,00 F1
2,30 F3

 

Part code #

  1. Venturi
  2. Auxiliary venturi
  3. Main jet
  4. Air correction jet
  5. Emulsion tube
  6. Idle jet
  7. Needle valve
  8. Accelerator pump jet
  9. Idle mixture adjusting screw
  10. Throttle valve

 

 

 

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