Selecting the right crankshaft for your 4G63 engine is crucial for ensuring durability and optimal performance. Consider these factors when making your purchase:
1. Material and Construction: Look for crankshafts made from high-quality materials such as forged steel or billet steel. These materials offer superior strength and durability compared to cast iron crankshafts, making them ideal for high-performance applications.
2. Stroke: Decide on the stroke length based on your desired engine displacement and performance goals. Longer strokes increase engine displacement and torque output, while shorter strokes favor high-RPM power and response. Choose a stroke length that aligns with your engine's intended use and power band requirements.
3. Counterweight Design: Consider the counterweight design of the crankshaft, which affects engine balance and smoothness. Balanced crankshafts reduce vibration and stress on internal components, leading to improved reliability and longevity. Choose a crankshaft with properly sized and balanced counterweights for your engine's specifications.
4. Journal Size and Bearing Compatibility: Ensure compatibility with your engine's main and rod journal sizes, as well as bearing specifications. Choose a crankshaft that matches your engine block's journal sizes and bearing clearances to ensure proper fitment and function. Consider upgrading to high-performance bearings for increased load capacity and durability.
5. Brand Reputation: Select crankshafts from reputable manufacturers known for quality and reliability. Brands like Manley, Eagle, and Brian Crower have earned reputations for producing high-performance crankshafts that meet or exceed OEM standards.
6. Installation Ease: Choose a crankshaft that is compatible with your engine block and other internal components. Consider whether professional installation is necessary and factor installation costs into your budget.
7. Budget Considerations: Set a budget for your crankshaft purchase and compare prices across different brands and retailers. While high-performance crankshafts may have a higher upfront cost, they can provide significant power gains and improved engine response, making them a worthwhile investment for enthusiasts seeking maximum performance.
By considering these factors, you can confidently select a 4G63 crankshaft that meets your performance goals and engine requirements, ensuring durability, reliability, and optimal performance for your Mitsubishi engine.