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Discussion Starter · #1 ·
I'm planning on pulling my head to get it ported, install new stem seals, and springs/retainers. Is it necessary to replace the valve guide bushings and the spring seats?

thanks.

Jay
 

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Discussion Starter · #4 ·
Ya, I know what their usually called. For some reason in the service manual, Toyota calls them Valve Guide Bushings and Spring seats.
 
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