AA Brand 311-198-069-88T Piston & Liner Set - 88mm x 69mm Slip-In

AA Brand 88mm Thick-Wall Piston & Cylinder Kit – 311-198-069-88T

The 311-198-069-88T is considered one of the most versatile performance upgrades for the air-cooled Volkswagen engine. By using an 88mm bore with a 69mm stroke, it provides a displacement of 1679cc. The standout feature is the "Machine-In Top / Slip-In Bottom" design. You get the cooling and strength benefits of a "big bore" cylinder at the head, where heat is most intense, while maintaining the stock 85.5mm opening at the engine case.

The kit features Hypereutectic Aluminum Alloy pistons, which offer lower thermal expansion than forged pistons, allowing for tighter clearances and quieter operation. The cylinders are cast iron with a specialized "Thick Wall" profile that is significantly beefier than standard 88mm or 92mm options, making them a favorite for daily drivers and mild performance builds.

Detailed Vehicle Compatibility

VW Beetle (Standard):

• 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977

VW Super Beetle:

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

VW Karmann Ghia:

• 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974

VW Type 2 Bus:

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

VW Type 3 (Notchback, Fastback, Squareback):

• 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973

VW Thing:

• 1973, 1974

Product Highlights & Features

• Complete Kit: Includes 4 cast iron cylinders, 4 hypereutectic pistons, a full set of piston rings, 4 wrist pins, and 8 clips.

• Increased Cooling Surface: The thicker walls provide more surface area to pull heat away from the combustion chamber, reducing the risk of cylinder warping.

• Cost-Effective Power: Allows for a displacement increase without the labor cost of shipping a case to a machinist for boring.

Technical Specifications

• Part Number: 311-198-069-88T / VW8800T1K

• Bore x Stroke: 88mm x 69mm

• Displacement: 1679cc

• Case Bore Required: 90mm (Stock 1500/1600cc)

• Head Bore Required: 94mm (Clearanced for 90.5/92mm cylinders)

Installation & Maintenance Tips

• Clock the Rings: While the rings come pre-installed, you must remove the pistons to "clock" the ring gaps (ensure they are not aligned) and check the end gaps according to your engine builder's specs.

• Arrow Orientation: Ensure the arrow on the piston crown points toward the flywheel during installation to maintain the correct wrist pin offset.

• Clean the Cosmoline: These kits ship with a protective "cosmoline" coating to prevent rust. Thoroughly clean the cylinders with hot soapy water or brake cleaner(in a well ventilated area with a respirator)  before assembly.

31119806988T

311-198-069F88EC