The timing chain issue is so over-blown on the interwebs, it’s not even funny. The most unreliable unit was found in B6 4.2 Audi A4, and even that one was not that terrible. The 4.2 found in later RS’es was, in fact, a new engine, which was loosely based on the out-going 4.2, capable to rev super high (RS5, 8.5K?)
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