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ALFA1750'S CARBURETORS PARTS STORE
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Dell'orto DHLA 40 carburetor settings
DHLA 40, E,C 40H turbo
chokes; Main jet ; emulsion tube; air corrector; idle jet; pump jet; needle valve;
upto 90 BHP; 28; 112; 7772.5/.7; 200; 50; 33; 150
upto 120 BHP; 30; 122; 7772.5/.7; 200; 50; 33; 150
upto 135 BHP; 32; 135; 7772.5/.7; 200; 52; 33-40; 150
upto 145 BHP; 34; 142; 7772.5/.7; 200; 55; 42; 150
Single DHLA40 Std.Mini/1600 XF; 32; 152; 7772.5/.7; 200; 60; 48; 150/170
Single 40 Modified Mini/XF/Pinto; 34; 158; 7772.5/.7; 200; 62; 48; 150/170

DHLA 40, F,G,H,L,R,N
chokes; Main jet ; emulsion tube; air corrector; idle jet; pump jet; needle valve
upto 90 BHP; 28; 122; 7772.11; 200; 58; 33; 150
upto 120 BHP; 30; 135; 7772.11; 200; 60; 150
upto 135 BHP; 32; 150; 7772.11; 200; 60; 33-40; 150
upto 145 BHP; 34; 162; 7772.11; 200; 62; 42; 150
Single DHLA40 Std.Mini/1600 XF; 32; 168; 7772.11; 200; 70; 48; 150/170
Single 40 Modified Mini/XF/Pinto; 34; 178; 7772.11; 200; 70; 150/170
float level for 40 DHLA carbs should be set at 14.5-15mm


DHLA 45/48
upto 145 BHP; 34; 135; 7772.5/.7; 180; 55; 33; 170/200 45's
upto 175 BHP; 36; 142; 7772.5/.7; 180; 60; 42; 225 48's
upto 210 BHP; 38; 155; 7772.5/.7; 180; 60; 42; 225
upto 220 BHP; 40; 165; 7772.5/.7; 180; 62;
42; 225
above 220 BHP; 42; 170; 7772.5/.7; 180; 62; 225


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Porsche 912/914 and Beetle VW Dell'orto carbs chokes; Main jet ; emulsion tube; air corrector; idle jet; pump jet; needle valve;
FRD 32; 23; 110; 7099.1; 200; 40; 40; 150; Use 115/118 mains above 1600cc
FRD 34; 27; 128; 7099.1; 170; 45; 50; 150; Use 132/135 mains above 1600cc
single DRLA40 or DRLA 36; 28; 145; 9164.2; 180; 65; 50; 150/170; Use 28 chokes up to 1800cc, single carb. not recommended for engines above this size
30; 152; 9164.2; 180; 65; 50; 150/170
32; 160; 9164.2; 180; 65; 50; 150/170
34; 165; 9164.2; 180; 70; 50; 150/170
Twin DRLA40 or DRLA 36 1300/1600&1700 Bus; 28; 112; 9164.2; 180; 55; 33; 150
DRLA 40 or 36-1641 cc's & 2 litre Bus; 30; 122; 9164.2; 180; 55; 33; 150
DRLA 40 or DRLA 36 -1800 cc; 32; 132; 9164.2; 180; 58; 33; 150
DRLA 40-1800-2000cc; 34; 140; 9164.2; 180; 60; 33; 150;
float level for the DRLA carburetors should be set at 5-6mm
Twin DRLA45; 36; 160; 9164.2; 180; 60; 40; 170
38; 170; 9164.2; 180; 60; 40; 170
twin DRLA48; 38; 170; 9164.2; 180; 60; 40; 170
40; 180; 9164.2; 180; 60; 40; 170

Basic weber carburetors settings
chokes; Main jet ; emulsion tube; air corrector; idle jet; pump jet; needle valve;
DCOE40
upto 90 BHP; 28; 112; F16; 180; 45F9; 35; 150
upto 120 BHP; 30; 120; F16; 180; 45F9; 35; 150
upto 135 BHP; 32; 125; F16; 180; 45F9; 40; 150
upto 145 BHP; 34; 135; F16; 180; 45F9; 40; 150

DCOE45
upto 145 BHP; 34; 135; F16; 165; 55F8; 45; 200
upto 175 BHP; 36; 145; F16; 165; 55F8; 45; 200
upto 210 BHP 38; 155; F16; 165; 55F8; 45; 200
upto 220 BHP; 40; 165; F16; 165; 55F8; 45; 200
VW16v/20516v&1.9/GM 16v ; 36 choke setting
above 16v engines but modified ; 38 choke setting
DCOE float level should be set at 7.5mm



Weber IDF
chokes; Main jet ; emulsion tube; air corrector; idle jet; pump jet; needle valve;
single IDF40 up to 1600cc; 28(weber idf36=30); 140; F11; 165; 55; 50;
1600-1835cc; 28(weber idf36=30); 145; F11; 165; 60; 50;
1835-2000cc; 28; 150; F11; 165; 60; 50;
Twin 40IDF up to 1600cc; 28(weber idf36=30); 130; F11; 200; 55; 50;
1600-1835; 28(weber idf36=30); 140; F11; 210; 55; 50;
1835cc-2000cc; 28; 145; F11; 220; 55; 50;
2000-2234cc; 28; 150; F11; 220; 55; 50;
Twin 44IDF up to 1600cc; 36 155 F11 200 55 50
1600-1835; 36; 160; F11; 210; 55; 50;
1835-2000; 36; 170; F11; 220; 55; 50;
2000-2235; 36; 175; F11; 225; 55; 50;
Weber IDF float level should be set at 9.2mm
Twin 48IDA up to 1600cc; 37; 135; F7; 155; 55F10; 50
1600-1835; 37; 140; F7; 160; 55F10; 50
1835-2000; 37; 145; F7; 160; 55F10; 50;
2000-2235; 40; 180; F2; 200; 60F10; 50;

A brief overview of weber emulsion tubes carateristics



SOLEX 40ADDHE NOTIONS

- Gg; Main jets
- K; venturis
- a;air correctors
- g;Idle jets
- i; pump jets

Basic solex 40ADDHE settings
chokes; Main jet ; air corrector; idle jet; pump jet;
upto 90 BHP; 28; 117-125; 150; 60; 45;
upto 120 BHP; 30; 135-145; 160 ; 60; 45;
upto 135 BHP; 32; 145-155; 160; 60; 45;
upto 145 BHP; 34; 155-170; 160; 62; 50;
Float level






1955 Alfa romeo Giulietta production lines


1924,Portello,Milano



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