Why Aren’t All Timing-Chain Guides Made of Metal?
Channel: Counterman
Date: 2024-03-21

To call some timing-chain guides plastic is not accurate. The materials used by manufacturers are highly engineered resins and structural fibers. These materials are designed to withstand high temperatures and forces inside the engine. They’re also engineered to withstand engine oil and harmful vapors created by blow-by inside the combustion chamber. The engineered materials are also designed to endure thousands of heat cycles.
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