Quote:
Originally Posted by RadRacerX
German manufacturers have been using plastics in engine parts for well, forever now. If you can identify the poor quality plastic parts and replace them immediately your car should last twice as long. In this case, there is no metal timing chain guide available but you can have one custom machined for a big price. It's probably worth it. They replaced the plastic timing chain guide with a new plastic timing chain guide of a different color. HA!
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There are plastics that are much better for this particular application then metal Think a metal chain sliding across a low friction(slippery), wear resistant plastic. If the guides were made from metal, as it wore, you be depositing metal dust into the oiling system and all through the engine, which is a bad thing
