⚠️ Technical Build Warning (Read Before Purchasing)
This specific Manley piston kit features a specialized Flat-Top design with a minimal -2.50cc volume. Unlike standard aftermarket 2JZ pistons that lower your compression for low-octane pump gas, this set creates a high-compression environment. Your exact compression ratio depends strictly on your cylinder head choice:
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2JZ-GTE (Turbo Head / 45cc Chamber): Yields a high-compression 10.0:1 CR. Ideal for high-response E85, methanol, or naturally aspirated setups looking for sharp throttle response.
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2JZ-GE (Non-Turbo Head / 37.7cc Chamber): Yields an ultra-high compression approx. 11.4:1 CR. Primarily reserved for dedicated all-motor (NA) builds or specialized fuel classes.
Critical Engineering Dimensions
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Bore Diameter: 86.50mm (+0.50mm Oversize)
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Piston Type: Flat Top (with valve pockets)
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Piston Net Volume: -2.50cc
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Compression Distance (CH): 1.338"
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Piston Weight: 354 grams (per piston)
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Designed For Stroke: 86.00mm (Standard/Stock Stroke)
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Designed For Rod Length: 142mm / 5.590" (Standard/Stock Length)
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Wrist Pin Size: 22mm x 2.250" (0.150" Wall Thickness)
Premium Materials & Manufacturing Features
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2618 Aircraft-Grade Forging: High-silicon alloy built to withstand extreme cylinder temperatures and aggressive ignition timing without fracturing.
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Factory Moly-Coated Skirts: Features an advanced anti-friction skirt coating straight from Manley to protect walls during cold start-ups and decrease friction.
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One-Fixturing Machining: Unique manufacturing process ensuring the ring grooves are perfectly square to the piston skirt for optimal ring seal and maximum horsepower retention.
- Valve Pocket Depth: Built to safely accommodate up to +1mm oversized aftermarket valves.
