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Weber Carburetors



Weber Carb Kits

CB has a large selection of Genuine WEBER Carburetors in a range of sizes to fit your desired application. These image links below will take you to our listings for the various kit sizes

.

Dual Weber ICT Kits
Dual 40 IDF
Dual 44 IDF
Dual 48 IDF
Dual 48 IDA
51.5mm Weber IDA



Weber Jetting Chart

This Jetting Chart provides a base line starting point. Every engine responds differently, and final jetting changes are most often determined by the engine builder or tuner. Engine size, cam, cylinder heads, ignition system, compression ratio, exhaust system, type of fuel, the vehicle and type of driving are all key elements in final calibration. The selection of main gas and air correction jets is determined by venturi size. The venturi sizes listed below are the sizes supplied by Weber in new carburetors. The use of larger venturi will increase airflow, and larger main gas jets than noted below will be required.



WEBER 40 IDF Factory
Sizes
Single
Carb
Dual
Carbs
AIR CORRECTION 2.00 1.60 2.00
EMULSION TUBE F-11
MAIN JET 1.15 1.45 1.30
PUMP JET .50 .80 .50
IDLE JET .50 .65 .55
VENTURII 28mm
NOTE: Drill 2mm Hole in each Throttle Valve of Single Carb.

WEBER 44 IDF Factory
Sizes
Single
Carb
Dual
Carbs
AIR CORRECTION 1.75 1.65 2.00
EMULSION TUBE F-11
MAIN JET 1.35 1.60 1.55
PUMP JET .50 .80 .50
IDLE JET .50 .65 .60
VENTURII 36mm
NOTE: Drill 2mm Hole in each Throttle Valve of Single Carb.

WEBER 48 IDF Factory
Sizes
Single
Carb
Dual
Carbs
AIR CORRECTION 1.80 1.80 2.00
EMULSION TUBE F-2
MAIN JET 1.50 1.70 1.75
PUMP JET .50 .80 .50
IDLE JET .55 .65 .60
VENTURII 40mm
NOTE: Drill 2mm Hole in each Throttle Valve of Single Carb.

WEBER 34 ICT Factory
Sizes
Single
Carb
Dual
Carbs
AIR CORRECTION 1.60 N/A 1.60
EMULSION TUBE F-78 N/A
MAIN JET 1.30 N/A 1.35
PUMP JET .50 N/A .50
IDLE JET .52 N/A .60


Weber Carburetor Parts

NOTE: Please specify exact sizes when ordering Jets & Venturi.

IDF Idle Jets
#6394

IDF Main
Gas Jets
#6398

IDF Air
Correction Jets
#6389

IDF Carburetor
Base Gaskets
40 #2700 /
44 #2709 /
48 #2702

DCOE Idle Jets
#6451

Not Available

DCOE Main
Gas Jets
#6398

DCOE Air
Correction Jets
#6389

DCOE Carburetor
Base Gasket
40 #2705
45-48 #2702

IDA Idle Jets
#6357

IDA Main
Gas Jets
#6398

IDA Air
Correction Jets
#6389

IDA Carburetor
Base Gasket
#2701

Emulsion
Tubes

F-2
#6353

F-7
#6352

F-11
#6354

40 IDF Venturi
#6395

44 IDF Venturi
#6356



Carburetor
Flow Meters


Weber Rebuild Kits
DCNF Carburetor Rebuild Kit
(40, 42, & 48) #6361
IDF Carburetor Rebuild Kit
(40, 44, & 48) #6362
IDA Carburetor Rebuild
Kit - 48 #6363
DCOE Carburetor Rebuild Kit
(40, 45 & 48) #6364
A larger selection of Weber Rebuild Kits to fit your application can be found here.



Weber IDF Update Kits

CB Performance has two Weber IDF Update Kits available.




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