Weber Idle Jet 50F8 DCOE

Application

This precision idle jet is specifically designed for Weber DCOE and 45 MCHH carburetors, providing essential fuel metering for idle and low-speed operation.

Technical Specifications

Fuel Orifice Size: 50 (0.5mm)
Air Bleed Type: F8 configuration
Air Bleed Hole: 1.2mm diameter side port
Thread: Standard Weber carburetor thread

Performance Characteristics

The F8 air bleed configuration provides a leaner mixture compared to F9 jets but richer than F11 types. This design is particularly recommended for applications using oxygenated fuels, where the additional air bleed helps maintain proper fuel mixture ratios.

Function

The idle jet controls fuel delivery during idle and progression phases of carburetor operation. The dual-circuit design combines precise fuel metering through the 50 orifice with controlled air introduction via the F8 side port, ensuring optimal atomization and mixture quality at low engine speeds.

Installation Notes

This jet is a critical component for proper carburetor tuning and should be selected based on specific engine requirements, cam profiles, and fuel type. Professional tuning may be required for optimal performance.