Ford Mustang Forum - View Single Post - Is the "red-line" real or conservative?
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post #20 of (permalink) Old 02-22-2011
PL1's Avatar
Joined: Dec 2010
Location: Youngsville
Posts: 37
Red Line on an engine is like a Maximum Rating on any component. The Designer/Manufacturer selects it as a limit that will give reasonable life of the assembly. Exceeding it doesn't mean instant failure, but exceeding it on a regular basis probably does shorten the life of the assembly. By how much? That's the interesting question!

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