Reply to "How sketchy are the stock valves?"

Hi Jack...good advice as usual. I checked my valves that are out for a head rebuild (71 4V) and very interesting, the intakes are VERY magnetic, yet the exhausts (with rusty tips) are still magnetic but barely. I would love to know what they are, but the heads have been rebuild and there are things I don't like, so anything but the actual head casting is likely going to be replaced.  

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