94mm Barrel Spacer Kit (0.010" Thick) - Type 1 Engines

Cylinder base shim set for aircooled VW Type 1 engines using 94mm cylinders and pistons.

These precision shims install between the cylinder barrel and crankcase to alter engine deck height and fine tune compression ratio during engine assembly. Increasing the cylinder spacing slightly increases combustion chamber volume, allowing accurate piston-to-head clearance and compression setup.

Cylinder base shims are commonly used during performance engine builds, especially on 1914cc and larger Type 1 engines where precise deck height measurements are essential. They are also useful for correcting deck height after machining work or compensating for flycut cylinder heads and custom crankshaft combinations.

Designed for use with 94mm barrels commonly fitted to high performance Type 1 engines.

Manufactured to 0.010″ thickness (0.254mm), making them ideal for precise deck height correction and fine compression ratio adjustment.

Sold as a set of 4, enough for one complete engine.

We recommend carefully measuring deck height and calculating final compression ratio before final engine assembly. Ensure cylinder seating surfaces are clean and flat during installation.

Specifications:

• Fits 94mm cylinders/barrels
• Thickness: 0.010″ (0.254mm)
• Fits Type 1 aircooled engines
• Quantity: Set of 4
• Fits between cylinder and crankcase

Applications:

Aircooled VW

• VW Beetle, 1960–1979, performance Type 1 engine applications
• VW Splitscreen Bus, 1960–1967, upright Type 1 engine applications
• VW Baywindow Bus, 1968–1979, Type 1 engine applications
• VW Karmann Ghia, 1960–1974
• VW Type 3, 1961–1973, upright Type 1 engine applications
• VW Type 181 Trekker, 1968–1983
• VW Buggy and Baja models using 94mm Type 1 engines