Intake Manifold Set - DELLORTO 2-Hole, 19/19 mm SHB - Vespa V50, PV, ET3 - for converting from SHB16 to SHB19 carburetors

Mounting Kit for DELL'ORTO SHB 19.19 Carburetor – Vespa V50, V90, Primavera, ET3, and Motovespa

All necessary mounting parts for installing an existing DELL'ORTO SHB/SHBC 19.19 carburetor on a classic Vespa small-frame engine. This kit is specifically designed for owners of a Vespa 50, 90, or a Spanish Motovespa who want to replace their stock small carburetor with a 19-mm carburetor.

The larger carburetor bore is a proven upgrade for small-frame engines. Even sporty 75-cm³ cylinders, such as the Polini Racing or DR F1, can benefit from this. A 19-mm carburetor is also a sensible choice for many tuned engines with 102 or 112 cm³. Especially when combined with adjusted intake valve timing, the performance potential of these engines can be better realized.

If you already own the right carburetor, this kit provides the parts needed for installation without having to buy an additional carburetor or air filter.

Complete Installation Kit for 19-mm Carburetors

When upgrading from a smaller SHB carburetor, simply replacing the carburetor is not enough. The 19-mm version requires a compatible intake manifold and a properly sized mounting sleeve.

The kit includes a 2-hole intake manifold for rotary valve engines with a Ø23 mm carburetor connection, as well as the corresponding sealing and mounting parts.

Contents

• 1 × Intake manifold, 2-hole version, for SHB/SHBC 19.19
• 1 × Casting protection cap / intake manifold sleeve
• 1 × Felt ring for sealing between the intake manifold and the carburetor
• 1 × Clamping ring to secure the cast protection cap
• 1 × Carburetor clamp
• 1 × Gasket between intake manifold and engine housing

Carburetor and air filter are not included.

Compatible Vehicles – Conversion to 19 mm

Vespa 50 / 90

• Vespa 50 / N / L / R (V5A1T)
• Vespa 50 S (V5SA1T)
• Vespa 50 Revival (V5R1T)
• Vespa 50 Special (V5A2T, V5B1T, V5B3T)
• Vespa 50 Special Elestart (V5A3T, V5B2T, V5B4T)
• Vespa 50 SS / Super Sprint (V5SS1T)
• Vespa 90 (V9A1T)
• Vespa 90 Racer (V9SS2T)
• Vespa 90 SS / Super Sprint (V9SS1T)

Motovespa – Spanish small-frame models

• Motovespa 50 3V (06C / 06M)
• Motovespa 50 4V (07C / 07M)
• Motovespa 75 (08C / 08M)
• Motovespa Super (762C / 762M)
• Motovespa 75 U2 (11C / 11M)
• Motovespa 75 Primavera PR (9PR / PR9)
• Motovespa 75 Primavera PN (9PN / PN9)
• Motovespa 75 Primavera PK (9PK / PK9)

Note on Motovespa: The Spanish Primavera 75 PK (9PK) is not the same as the later Piaggio PK series. For Spanish models, the actual design of the engine casing and the routing of the pipes should be checked before installation.

Additional Applications – Near-OEM Replacement

The installation kit is also suitable for the following models equipped with a corresponding 19-mm carburetor system:

• Vespa 50 SR / Sprinter (V5SS2T)
• Vespa 100 / 100 Sport (V9B1T)
• Vespa 125 Nuova (VMA1T), with appropriate modification
• Vespa 125 Primavera (VMA2T)
• Vespa 125 Primavera ET3 (VMB1T)
• Motovespa 125 SL (SN9 / 9SN)
• Motovespa 125 Primavera T3 (9T / T9)
• Motovespa 125 Primavera NV (9NV / NV9)
• Motovespa 125 Primavera NK (9NK / NK9)

For Vespa Primavera and ET3 models equipped with the original 19-mm carburetor, this kit can be used to replace worn or missing components.

Installation Instructions

The intake manifold is attached to the engine casing using the included gasket. The cast metal protective cap and felt ring seal the connection to the carburetor. The felt ring should be greased before installation to ensure the connection reliably seals against air leaks.

Important: The included intake manifold is designed for classic V50/Primavera engine cases with a 2-hole mounting and corresponding pipe routing. Different intake manifold versions are required for Vespa PK, PK S, and PK XL models.

After the conversion, the carburetor’s jet settings must be adjusted to match the engine.