How to choose the right Carburetter for your vehicle

Mark 1, Mark1 1/2 & Mark 2 Concentrics - Carburetter type number, followed by internal bore diameter, followed by the following specification number, according to adjuster screw handling and fuel type e.g.
928/300 is a Mark 1 900 series, with a 28mm bore, right hand adjustment, for a 4 stroke petrol engine.
1930/301 is a Mark 1 1/2 series with a 30mm bore, left hand adjustment, for a 4 stroke petrol with flange mounting.
2932/302 is a Mark 2 series with a 32mm bore, right hand adjustment, 2 stoke petrol with spigot mounting.
2934/303 is a Mark 2 series with a 34mm bore, left hand adjustment, 2 stoke petrol with spigot mounting.
2036/304 is a Mark 2 series with a 36mm bore, right hand adjustment, 4 stoke alcohol fuelled with spigot mounting.

Smoothbore carburetter specifications end with a 'T' designation. The specification numbers for Petrol are:
Right hand adjustment /300 4 Stroke /302 2 Stroke /306 2 Stroke Powerjet /310T 2 Stroke Smoothbore /312T 4 Stroke Smoothbore * Left hand adjustment /301 4 Stroke /303 2 Stoke /307 2 Stroke Powerjet /311T 2 Stroke Smoothbore /313 4 Stroke Smoothbore

The specification numbers for Alcohol are:
Right hand adjustment /304 4 Stroke /308 4 Stroke Smoothbore
Left hand adjustment /305 4 Stroke /309 4 Stroke Smoothbore

Monobloc Carburetters - Carburetter type number e.g 376 or 389, followed by size designation.
376 series, size designations are: 1516 for 15/16" bore diameter, 1616 for 1" bore diameter and 1716 for 1 1/16" bore diameter.
389 series, size designations are: 3632 for 1 1/8" bore diameter, 3732 for 1 1/16" bore diameter. Both series are only available in right hand adjuster form, 'Short' float bowl versions ('S' designation) are available.

Pre-Monobloc Carburetters - Order by vehicle specification or using build your own feature.