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Valve Shimming - which side of spec?
#17
(01-31-2021, 02:07 AM)Dave_imp Wrote: spec (IN 0.006, EX 0.011).

The recommended shim size for EXHAUST is fine, but I have two choices for INTAKE. For INTAKE I have choice of 0.065 (recommended) or 0.051 new clearance. I was thinking I should pick 0.051 with the assumption that they will loosen over time.
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I don't understand your numbers. The spec is .006 +/- .001, correct? Where are the values .065 and .051 coming from? Are these the shim thicknesses, or the actual valve clearances, which seems about a factor of 10 off.

Please clarify.
Those are the "calculated" new clearances based on the two shim size choices
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New Clear. Calc = Actual valve clearance - (New Shim thickness -Old Shim thickness)
If anybody cares, I copied Mr. LakeWylieJoe's spreadsheets and modified them to do my desktop analysis.
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Contains valve clearance history, new shim calcs, and diagram of final shim changes.

[Image: 1372a507524a8051c493524f728f0189.gif] [url=attachment.php?aid=12929]Flint.valves.xlsx (Size: 62.02 KB / Downloads: 15)
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Contains sizes of available replacement shims. I mic'ed the ones I thought applicable to my bike.

[Image: 0ff532e04f46b0fd0363c7e4dfb7932a.gif] [url=attachment.php?aid=12930]Available.Shim.sizes.xlsx (Size: 14.91 KB / Downloads: 2)
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RE: Valve Shimming - which side of spec? - by bflint_imp - 01-31-2021, 04:03 AM

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