From Moss Motoring 1983 by Richard Wood It is not the aim of this article to present a technical thesis on the S.U. carburetor; if that is what you need, you should buy an S.U. Manual. (Moss part no. 211-345) Rather, the attempt is to supply some basic “no frills know-how” to help you regain…
From Moss Motoring 1985 Rebushing carburettor bodies and fitting new throttle shafts is a major part of a proper carb rebuild that is often overlooked. Vacuum leaks due to worn bodies and shafts cause rough idle, poor performance and poor fuel economy. Checking the shaft and body clearance is a simple matter of wiggling the…
The choice of carburation for MGBs has really become confusing. Moss currently stocks five basic carb setups. They are twin 1.5 inch SU, twin 1.75 inch SU, Weber DGV down draft, Weber DCOE side draft, and the newest addition is the SK DBS (Double Barrel Side draft). We are purposely avoiding Zenith Strombergs as they…
After installing a re-build kit in an SU carburetor (especially an H-series) it is sometimes impossible to achieve a sufficiently lean mixture by manipulation of the mixture adjusting nut alone. Before resorting to the quick and make-shift solution of lowering the needle in the piston, examine the sketch below carefully and compare the actual carburetor…
SU carburetors are some of the simplest “full function” carburetors ever put on relatively modern cars. However, since they work so differently from most other carburetors, few people in the USA really understand them well. Many, if not most, problems attributed to these carbs’ being “out of tune” are really faults of the ignition system,…
