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Is the longer valve spring on the new Santana for intake or exhaust?

1 Answers

Eugenia

07/30/25 3:16am

The longer valve spring is for the exhaust, while the shorter one is for the intake. Here are the specific details about valve springs: 1. Function: The valve spring ensures the correct reset of the valve, overcoming the gap generated by the inertia force of the valve and transmission parts during the closing process, ensuring timely seating and tight contact of the valve, and preventing the valve from breaking the seal due to jumping during engine vibration. 2. Installation position: When installed, one end of the valve spring is supported on the cylinder head, and the other end is pressed against the spring seat at the tail end of the valve stem, fixed at the end of the valve stem with a lock ring or lock pin. 3. Material: To ensure sufficient stiffness and installation preload, valve springs are mostly made of high-carbon manganese steel, chromium-vanadium steel wire, or silicon-chromium steel wire. Valve springs are generally made into cylindrical springs with equal pitch. When an engine is equipped with a single valve spring, springs with unequal pitch are used to prevent resonance.

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