WEBER 38 DGMS Carburettor Kit for MGB 1800 B Series – Twin SU Conversion

WEBER 38 DGMS Carburettor Kit for MGB 1800 B Series

Twin SU Carburettor Conversion

Improve the drivability, throttle response and performance of your MGB 1800 with this WEBER 38 DGMS conversion kit, specifically developed for the B Series 1800 engine.

This genuine WEBER Performance kit replaces the original twin SU carburettor setup with an authentic WEBER 38 DGMS manual-choke carburettor, correctly calibrated for the B Series engine.

This kit has been designed to provide a noticeable improvement in driveability and economy compared with the original twin SU carburettors.

WEBER 38 DGMS – Manual Choke

The WEBER 38 DGMS features a manual choke, giving the driver direct control over cold-start enrichment.

The carburettor is supplied with specific jetting and calibration for the B Series 1800 engine, providing excellent driveability and performance straight out of the box.

This configuration is particularly well suited to owners of classic MGBs and enthusiasts looking for a reliable, responsive and easily tunable carburettor setup.

Kit includes

• 1 genuine Spanish WEBER 38 DGMS manual-choke carburettor
• Carburettor correctly jetted for the B Series 1800
• 1 inlet manifold
• 1 throttle linkage set
• 1 high-quality air filter
• Soft mounts
• Studs
• Nuts
• Associated mounting hardware

This is a complete conversion kit developed specifically to replace the twin SU carburettor system with a WEBER 38 DGMS on the MGB 1800 B Series engine.

Why convert from twin SU carburettors to a WEBER 38 DGMS?

Twin SU carburettors are an iconic part of the original MGB B Series setup. This WEBER 38 DGMS conversion has been developed to improve drivability while retaining the character of the classic engine.

The kit is designed to provide:

• improved engine flexibility
• sharper throttle response
• improved driveability
• smoother running
• improved performance
• potential improvements in fuel economy
• a modern and practical carburettor solution for a classic MGB

The WEBER 38 DGMS is supplied with calibration developed specifically for the B Series 1800, rather than as a generic universal carburettor requiring complete initial setup.

Recommended Low-Pressure Fuel Pump

We recommend fitting this kit with a suitable WEBCON low-pressure fuel pump for carburettor applications.

Part number: PAFWFP17303

12 V pump – 0.17–0.30 bar / 2.5–4.5 PSI.

Key specifications

• Brand: WEBER
• Carburettor: WEBER 38 DGMS
• Choke: Manual
• Engine: B Series 1800
• Application: MGB
• Replaces: Twin SU carburettors
• Type: Carburettor conversion kit
• Inlet manifold: Inclluded
• Throttle linkage: Included
• Air filter: Included
• Carburettor manufacture: Spain
• Calibration: B Series 1800

Genuine WEBER Carburettor

PAFClassic is an official distributor of WEBER and WEBCON products.

All WEBER carburettors supplied by PAFClassic are genuine WEBER carburettors manufactured in Spain under Magneti Marelli licence.

We have access to more than 11,000 carburettor and spare-part references, together with the WEBER technical library.

This enables us to supply the correct components for servicing, repairing and tuning your genuine WEBER carburettor.

Beware of WEBER copies

WEBER-style copies are now widely available on the market. Although often offered at attractive prices, manufacturing quality can vary considerably.

Internal components, particularly jets, may not be compatible with genuine WEBER parts. This can make correct tuning and calibration difficult.

For a classic MGB, we therefore recommend choosing a genuine WEBER carburettor.