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does new oem head and oem vales need lapping?

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Old Sep 10, 2015 | 12:14 PM
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does new oem head and oem vales need lapping?
getting a new oem head and oem valves. wonder if the valves will need lapping, or just install and go.
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Old Sep 11, 2015 | 10:10 AM
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Always lap them
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Old Sep 11, 2015 | 10:38 AM
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if the the head isn't coming to you assembled, IE you're buying a bare head, and separate valves. Then you need to lap them in. Its a simple process..
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Old Sep 11, 2015 | 10:56 AM
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i have lap valves on honda before, new valves on used head. but this head and valves will be new from dealer, not assembled.
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Old Sep 11, 2015 | 11:22 AM
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Definitely need lapped. Freshly machined valves and seats still need to be lapped for final exact fitment..
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