Turning-Milling-Sheet Metalwork-Welding-Raw Material Supplies

Ringwood Precision Engineering

Price £14.95

Postage £1.95 United Kingdom

Postage £6.00 Rest of the World

Pro. Series SU Carburettor High Performance Manual

Expert advise on how to build & modify SU carbs to suit any 4-stroke application, including competition cars. Includes needle profiling, and explains how to "Jet" SUs for almost any application. With step by step illustrations, tables and colour photographs throughout.

Contents Include :-

How an SU carburettor works

Inlet manifold / Throttle linkages

What size carburettor's / SU carburettor sizes, SU type range, Single carburettor applications (four cylinder engines), Twin carburettor applications (four cylinder engines), Twin & triple carburettor applications (six cylinder in-line engines), Carburettor size versus cylinder capacities, Carburettor choice compromises

Needles

Altering needle Methods of holding needles during polishing, Modifying individual measuring point diameters, Alternative method

Choosing starting point needles

Carburettor tuning sequence Multiple carburettor fuel bowl setting, Basic/start-up settings, Idle speed settings, Idle speed advance, Vacuum advance, Synchronising multiple carburettors for off idle use

Rejetting (engines equipped with SUs as standard)

Choke

Rejetting (other engines)

Piston springs, Idle settings, Vacuum advance, Needle profiles

Modifications for racing engines

Modifications, Throttle spindle modifications, Piston spring base machining, "Dashpot" cap vent hole modification, Air cleaners/ram tubes, Checking/modifying needles for correct mixture strength, Piston travel (11 1/4in SU), Conclusion, Manual choke, Example engine

Fuel & octane ratings & valve seat recession

Heads without hardened exhaust valve seats, Fitting hardened valve seats

Rolling road dyno

Conversion chart

Your needle modification record

SU repair and rebuild

Repair kits, Spindle wear, Multiple carburettor linkages, HS type main jet assembly, Damper rods, Throttle stop adjustment screw spring, HIF baseplates, HS where applicable and HIF floating needle guides, Spring loaded needles, Remote fuel bowls, Float levels, Hoses and clamps, Fuel pumps and fuel filters