Weber Tuning Books

The STE BK will fit intakes of approx. 2” to about 2 5/8”. The BK features a rubber sleeve that can be rotated to open a by-pass allowing a higher air flow up to 50 kg/h; by-pass closed 1 to 35 kg/h. Using an additional adapter STE 118 will allow the BK to fit intakes as small as 1 ½” similar to the STE SK and allow for higher RPM air flow and synchronization. (Most universal combination) Learn More

The STE SK will fit intakes of 1 5/8” to 2 1/8”. This SK will measure air flow from 1 to 30 kg/h. With this “lower” calibration scale it is easier to read the variations in air flow between carburetors at idle RPM’s only. The SK also has extended calibration at 1 to 3 kg/h also making it useful to check secondary throttle adjustment at idle. Learn More

Haynes Weber Carb Manuals
A great reference book for rebuilding, tuning, etc.

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This is the factory tuning manual with all the calibrated parts specifications, circuit diagrams, etc. 
This is the book to have if you really want to know how a Weber carb works and what all the pieces do.

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