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Broken Camshaft
I bought an 88 300zx turbo that was listed as having a rod knock. I determined that the noise was coming from the passenger side camshaft, so I pulled the timing cover to inspect it. The belt was fine and I couldn't move the cam by hand, so I started the engine and revved it up a bit, and the cam simply snapped in half inside the head. I'm not concerned one bit about the engine, but I'd like to know what may have caused this to happen. I was told that it was overheated and that caused the knocking. It was parked, sold, and then sold to me, so I can't really get the full story.
Any ideas?
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