TwinTurbo.NET: Nissan 300ZX forum - Cylinder head distortion question.
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Subject Cylinder head distortion question.
Posted by Aaronw on March 19, 2017 at 9:03 AM
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Message Hello everyone, I have a question of curiosity. I have a set of 40p heads I'm checking with a machinist straight edge, as per FSM, it tells you to measure across the top bolt holes, bottom bolt holes, then in an X pattern. It doesn't tell you to measure across the center (over all the spark plugs). However I did it anyways, and I find a .09mm gap in only the section the X pattern doesn't hit. Is that normal? I understand that true, should be 100% true every place, but since the FSM doesn't say to measure that area, should I ignore it? Thoughts?

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