311-198-06987T VW 1641cc 87mm Piston & Liner Set - AA Performance

87mm Piston & Liner Set (1641cc) – 311-198-06987T

The 311-198-06987T is the easiest way to add a noticeable boost in torque and horsepower to your classic Volkswagen. By increasing the bore from the stock 85.5mm to 87mm, you effectively bump your displacement to 1641cc. Because these are "slip-in" style, they are a favorite for garage builders looking for extra performance during a routine top-end refresh without the expense of a machine shop.

The cylinders are made from durable cast iron for excellent heat dissipation and wear resistance, while the pistons feature a standard 39.50mm compression height, keeping your geometry close to factory specifications.

Detailed Vehicle Compatibility

VW Beetle (Standard):

• 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977

VW Super Beetle:

• 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979

VW Bus (Type 2):

• 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971

VW Karmann Ghia:

• 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974

VW Thing:

• 1973, 1974

VW Type 3:

• 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973

Product Highlights & Features

• Increased Displacement: Moves your engine from 1584cc to 1641cc for improved hill-climbing and highway cruising.

• Cast Iron Cylinders: Provides a stable, long-wearing surface for the piston rings and excellent thermal stability.

• Direct 69mm Stroke Fitment: Engineered specifically for the standard 69mm crankshaft stroke.

Technical Specifications

• Part Number: 311-198-06987T (AA-8700T1)

• Bore Size: 87mm

• Engine Displacement: 1641cc

• Piston Material: Hypereutectic Aluminum Alloy

• Cylinder Material: Cast Iron

Installation & Maintenance Tips

• Check Deck Height: Even with slip-in kits, you must measure your Deck Height (the distance from the top of the piston to the top of the cylinder) to ensure your compression ratio is safe for the fuel you intend to use.

• Ring End Gap: Always "file-fit" or at least verify the Piston Ring End Gap before installation. Never assume rings are pre-gapped out of the box.

• Break-In Procedure: Use a high-zinc break-in oil and follow a strict break-in heat cycle to ensure the rings seat properly against the new cast-iron cylinder walls.

31119806987T

VW8700T1