BBTV 669 Engine Piston Ring

Engine Piston Ring for Corvair

This engine piston ring set is built for a 3 7/16-inch bore and standard oversize applications. It is listed for the Chevrolet Corvair and uses grey iron and steel rail materials with phosphate and chrome surface treatments for the ring package.

Key Features

• Standard oversize configuration for the specified bore size
• Grey iron top and second ring construction
• Steel rail and stainless expander oil ring design
• Phosphate-coated top and second rings for added surface protection
• Fits the Chevrolet Corvair engine application shown in the catalog data

Detailed Description

Part number 669 is an engine piston ring set specified for a 3 7/16-inch engine bore with 1/16-inch top and second ring grooves and a 1/8-inch oil groove. The ring package combines a grey iron top ring, grey iron second ring, and a steel rail/stainless expander oil ring arrangement, with phosphate treatment on the compression rings and chrome treatment on the oil ring surface. For buyers searching for Chevrolet Corvair piston rings or a Corvair standard bore ring set, this listing provides the core dimensional and material details needed for selection.

This part number 669 application is cataloged for 1964-1969 Chevrolet Corvair engines with the notes shown in the fitment data. The ring set is intended for the six-cylinder engine configuration listed in the product record and should be matched to the bore and groove dimensions before ordering.

What It Is Used For

• Restoring cylinder sealing in a worn engine
• Addressing oil control concerns related to ring wear
• Replacing compression rings with the correct groove dimensions
• Supporting proper combustion pressure retention
• Matching a standard bore Corvair engine rebuild specification

Installation Notes and Tips

Verify the engine bore, ring groove widths, and oversize specification before installation. Confirm that the 3 7/16-inch bore and the listed groove dimensions match the engine being serviced. Part number 669 should be installed only after the cylinder walls, pistons, and ring lands have been inspected and measured to the same specification.

Quality Assurance

Cataloged dimensions, materials, and surface treatments are provided for accurate part selection. This listing includes the fitment data needed to confirm the Chevrolet Corvair application before installation.