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FJR Motorcycle Forums
Technical & Mechanical Problems
An Excel Valve Clearance Spreadsheet
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<blockquote data-quote="Fred W" data-source="post: 1061683" data-attributes="member: 3828"><p>I only had to do my intakes so unsure what they have going on under the exhaust buckets. All 8 of my intakes were under the .15mm spec by from .01 to .03 mm at 75k miles. They had previously always been on the low end of spec range since the first check at 25k. Exhausts were all in spec.</p><p></p><p>The shims I took out miked out to be between 1.79 and 1.81, so it appears the factory aims for a 1.80 but has increments of .01 for setting the initial clearances.</p><p></p><p>If I was using Yamaha shims, only available in .05mm increments, I would have just stuck in 8 of the 1.75 mm shims and called it good. Instead, I sanded the shims to the exact thickness I wanted and got all 8 clearances to .20 mm, the high end of spec range (.15-.22 mm)</p><p></p><p>Here's the whole story:</p><p></p><p><img src="https://i916.photobucket.com/albums/ad4/FJWinNH/FJR1300%20Modifications/Shimming/ShimCalculations.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Fred W, post: 1061683, member: 3828"] I only had to do my intakes so unsure what they have going on under the exhaust buckets. All 8 of my intakes were under the .15mm spec by from .01 to .03 mm at 75k miles. They had previously always been on the low end of spec range since the first check at 25k. Exhausts were all in spec. The shims I took out miked out to be between 1.79 and 1.81, so it appears the factory aims for a 1.80 but has increments of .01 for setting the initial clearances. If I was using Yamaha shims, only available in .05mm increments, I would have just stuck in 8 of the 1.75 mm shims and called it good. Instead, I sanded the shims to the exact thickness I wanted and got all 8 clearances to .20 mm, the high end of spec range (.15-.22 mm) Here's the whole story: [IMG]https://i916.photobucket.com/albums/ad4/FJWinNH/FJR1300%20Modifications/Shimming/ShimCalculations.jpg[/IMG] [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
An Excel Valve Clearance Spreadsheet
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