Weber Triple 45 DCOE Conversion Kit – Healey BN4 to BJ8

This Weber conversion replaces the standard SU induction with three genuine 45 DCOE sidedraft carburettors, a proven upgrade for Austin Healey six-cylinder engines. Popular with historic racers and fast-road builds, the kit offers sharper throttle response and greater airflow headroom than even the factory tri-carb setup.

What’s in the Kit

• 3 × Weber 45 DCOE carburettors pre-jetted for a stock 2912 cc engine
• 3 × individual inlet manifolds with soft-mount gaskets
• Complete rod-type throttle linkage & cable quadrant (RHD or LHD)
• Braided fuel hoses, T-piece, banjo bolts and AN fittings
• Phenolic carburettor mounting plates and sealing O-rings

Key Benefits

• Greater venturi area for high-RPM breathing
• Individual idle and progression circuits simplify fine-tuning
• Modern Weber spares availability worldwide
• Period-correct look for competition or rally replicas

Compatibility

Suits Austin Healey Big-Healey engines BN4.68960 through BJ8 (late BN4, BN6, BN7, BT7, BJ7 & BJ8). The kit is a direct replacement for twin or tri-SU systems; no bodywork changes are required.

Installation Notes

The carburettors are supplied with a baseline calibration suitable for a standard engine. Rolling-road tuning is recommended to optimise jetting for camshaft, compression and exhaust upgrades.

Servicing & Maintenance

Each 45 DCOE can be rebuilt using standard Weber service kits (jets, gaskets and needles). Replacement jets and venturis are readily available for future tuning.