Carrillo SC7653-1 Forged Piston for Toyota Bore CR Pistons - 4AGE 16V 81.5mm 12 1

The Carrillo SC7653-1 is a high-performance forged aluminum piston designed for naturally aspirated Toyota 4AGE 16-valve engines. This single piston features precision engineering with a 3.209-inch (81.5mm) bore diameter and delivers a 12.0:1 compression ratio for maximum power output.

Key Specifications:

• Bore diameter: 3.209 inches (81.5mm, +0.5mm oversize)
• Compression ratio: 12.0:1
• Compression height: 1.208 inches (30.7mm)
• Dome height: 0.155 inches with 5.0cc dome volume
• Wrist pin diameter: 0.787 inches (20mm)
• Ring thickness: 1.0mm x 1.2mm x 2.8mm
• Rod length compatibility: 122mm
• Stroke compatibility: 77mm

Construction and Features:

• Manufactured from high-strength 2618-T61 aluminum alloy forgings for exceptional durability under high heat and cylinder pressure
• CNC-machined and balanced to within +/- 1 gram for precise tolerances
• Full radiused dome design with deep valve reliefs compatible with oversized valves and high-lift camshafts
• Custom skirt cam and barrel design optimized for performance applications
• Accumulator grooves and double pin oilers for enhanced lubrication
• Press-fit or floating wrist pin configuration

What's Included:

• Single forged piston
• High-performance piston rings (1.0mm top ring, 1.2mm second ring, 2.8mm oil ring)
• Wrist pin (gudgeon pin)
• Wrist pin retainers

This piston is specifically designed for naturally aspirated 4AGE 16V builds seeking maximum compression and performance. The dome piston design with four valve reliefs ensures compatibility with performance camshafts while maintaining optimal combustion chamber efficiency. Proper installation requires verification of piston-to-wall clearance, ring end gaps, and deck height during assembly.