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Re: Strange looking brake rotors

To: <land-speed@autox.team.net>
Subject: Re: Strange looking brake rotors
From: "John Burk" <joyseydevil@comcast.net>
Date: Sat, 5 Jun 2004 00:53:02 -0400
Like exhaust manifolds and flywheels , brake rotors are ductile iron castings
- Ductile iron is regular iron with sulpher added to change the grain
structure - Hard spots sound like foundry errors .






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