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Old 07-22-2021, 12:14 AM   #2
Ronald Culberbone III
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Join Date: Feb 2010
Location: Portland, OR

The valve guide diameter is 13.5mm, so you’ll want an ID on the washer that’s slightly bigger than that. Shim the spring so it’s within 1-1.5mm of coil bind at full lift.

When you use valve spring shims, make sure the smooth edges are towards the aluminum, and the sharp edges towards the spring seat. Better yet, debur the sharp edges.
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