Manley 592865C-8 Forged Piston Set Bore Alloy Dish - 4.065 2618 29cc

The Manley 592865C-8 is a high-performance forged piston set engineered for serious engine builds requiring durability and precision. Machined from premium 2618 aluminum alloy, these pistons feature a -29cc dish design with a 4.065" bore, making them ideal for custom displacement combinations with excellent strength-to-weight characteristics.

Key Specifications:

• Bore: 4.065 inches
• Compression Distance: 1.115 inches
• Rod Length: 6.125 inches (designed for)
• Stroke: 4.000 inches (designed for)
• Piston Design: -29cc Dish
• Pin Diameter: 0.927 inches
• Piston Weight: 402 grams (497 grams with pin)
• Ring Package: 1.5mm, 1.5mm, 3mm Total Seal configuration
• Compression Ratios: 9.3:1 @ 64cc | 9.1:1 @ 66cc | 8.8:1 @ 70cc | 8.7:1 @ 72cc

Advanced Manufacturing Features:

• 2618 aluminum alloy forging delivers maximum high-temperature strength and superior fatigue resistance for demanding applications
• Contour forging process provides optimal strength-to-weight balance without grain-interrupting internal milling
• Single-fixturing manufacturing method ensures perfect ring groove to skirt squareness for maximum cylinder sealing and horsepower
• Proprietary multi-step top ring groove machining controls groove size, geometry, flatness, and surface finish
• Federal Form-Scan gauging validates ideal skirt indexing to pinhole and maintains precise skirt-to-skirt polarity
• Precision pinhole machining delivers exact compression distance and lock ring groove spacing

Performance Enhancements:

• Offset wrist pin design reduces piston rock for quieter cold starts and improved performance
• Moly-coated skirts reduce friction and provide superior scuff resistance
• Pressure balance groove included standard to minimize internal stress
• Total Seal ring package optimizes cylinder sealing for maximum compression retention

Complete Kit Includes: Pistons, tool steel wrist pins, round wire locks, and rings. All value-added features included at no additional charge.

Technical Note: Compression ratios calculated at 0.00" deck clearance, 9.240" deck height, and 0.042" compressed head gasket thickness. Verify all measurements for your specific application to ensure proper fitment and performance.