Manley 594430C-8 Forged Piston Set Bore Alloy Dish - 3.582 2618 18cc

The Manley 594430C-8 is a high-performance forged piston set engineered for demanding engine builds requiring precise bore specifications and proven durability. Featuring a 3.582" bore diameter with an 18cc spherical dish design, these pistons are machined from high-strength 2618 aluminum alloy to deliver maximum high-temperature strength and fatigue resistance under extreme conditions.

Key Specifications:

• Bore diameter: 3.582 inches
• Compression distance: 1.220 inches
• Compatible rod length: 6.657 inches
• Designed for 4.165-inch stroke
• Piston weight: 363 grams (451 grams with pin)
• Compression ratios: 9.01:1 at 42cc chamber, 8.25:1 at 51cc chamber, 8.17:1 at 52cc chamber
• Ring package: 1.5mm, 1.5mm, 3mm Total Seal configuration

Performance Features:

• 2618 aluminum alloy forging provides superior strength-to-weight ratio and exceptional heat resistance
• Contour forged design optimizes structural integrity without grain-interrupting internal milling
• Offset wrist pin design reduces piston rock for quieter operation and improved performance
• Moly-coated skirts reduce friction and improve wear characteristics
• Pressure balance groove included for enhanced ring seal and reduced blowby
• Single-fixturing manufacturing process ensures perfect ring groove to skirt squareness for maximum cylinder seal
• Proprietary multi-step top ring groove machining delivers precise groove geometry and finish
• Federal Form-Scan gauging validates optimal skirt indexing and polarity

Included Components:

• Forged pistons with 18cc spherical dish
• Tool steel wrist pins
• Roundwire locks
• Total Seal ring package

Note: Compression ratios are calculated at 0.00 deck clearance, 9.240-inch deck height, and 0.042-inch thick compressed head gasket. These precision-machined pistons deliver the lightweight strength and dimensional accuracy required for high-performance street and competition applications.