Dellorto PHVA 17.5mm ID Carburettor with manual starter

Carburettor Dellorto PHVA 17.5mm ID manual starter.

This Dellorto PHVA 17.5 ID carburettor with manual starter is the recommended component to replace the worn original carburettor or to upgrade 50cc engines and low-to-mid-range setups. By increasing the duct diameter to 17.5 millimetres, more efficient gas filling is achieved in the crankcase, providing greater acceleration force and a quicker, cleaner throttle response.

Its cylindrical slide ensures constant regulation of the air and fuel flow, preventing carburation flat spots and providing stable performance throughout the entire rev range. The body is made of die-cast Zamak, a metal alloy that withstands vibrations and thermal differences without suffering deformations that affect airflow.

To facilitate tuning, the idle system incorporates an easily accessible jet and air adjustment screw, while the mixture calibration in the high-speed circuit is carried out mechanically by means of a needle and tapered pin.

Technical characteristics

• Slide: cylindrical
• Starter: manual
• Idle: jet and air adjustment screw
• Mixture: mechanical adjustment with tapered pin
• intake manifold connection: 24mm, 42 mm flange
• Air intake connection: 35 mm
• Material: die-cast Zamak