The Wassell Evolution 30mm carburetor is a reproduction of the Amal 930 Concentric Premier, but at a lower cost.
The left-hand Evolution carburetor is intended for use with a matching right-hand version on a dual-carburetor head, although with changes in the jetting, it can be used on a single-carburetor head. The tickler is on the left side of the carburetor body.
The carburetor is supplied with a #3 cutaway slide, .106 needle jet, and a 200 main jet. The internal parts are interchangeable with Amal 930 Concentric components.
The mounting flange is fitted to the inlet manifold studs and secured with nuts. The banjo fitting at the bottom of the float bowl is retained with a special bolt that allows introduction of fuel into the float bowl. Supplied with choke assembly.
Note: The carburetor top cap adjusters must be removed and the threaded holes drilled out to accept Triumph-specific throttle and choke cables with the “top-hat” ferrules fitted.
For our 30mm Triumph/BSA ‘Evolution’ carb set for Triumph and BSA twins click here
For the single right hand 28mm ‘Evolution’ carb for BSA models click here
For our 32mm ‘Evolution’ carb set for Norton models click here