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Unread 03-07-2013, 12:59 AM
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Smithers Smithers is offline
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Location: San Luis Obispo, CA
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The surface of the cylinder head should be super flat and this cannot be done with the valves installed. You can't get the surface flat with the valve heads sticking up from the head surface. Below is a picture of the head up close and notice the shadows displayed to the right of the valves showing that they protrude up from the head surface. The valves need to be removed to surface the head.



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