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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Fogging for Mosquitos; Valve Guide Issues and Solutions
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<blockquote data-quote="ClassicBiker" data-source="post: 107490" data-attributes="member: 1632"><p>Well I had considered inverting the heads on 2x4x6 blocks placed across the cylinder stud holes and clamping down just off of the face and skimming on the mill. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /> Then I came back to my senses. Thoughts of breaking a fin by clamping down to much or watching a head sail across the garage because it wasn't clamped tight enough entered my head. Plus the nagging doubt of are the top faces of cylinder head bolt holes really parallel to the bottom face, are they actually a single plane or were they just cleaned up to provide a clamping surface without regard to anything? The fact that after the heads are assembled on the engine and the nuts tightened then the brackets that secure the UFM to the engine sit on the nuts leads me to believe locating up down in that location would be okay. But how to secure safely and leave a clear tool path, that is what bothers me. It would be interesting to see how they were located when originally manufactured or how the new replacement heads are done.</p><p>Steven</p></blockquote><p></p>
[QUOTE="ClassicBiker, post: 107490, member: 1632"] Well I had considered inverting the heads on 2x4x6 blocks placed across the cylinder stud holes and clamping down just off of the face and skimming on the mill. :eek: Then I came back to my senses. Thoughts of breaking a fin by clamping down to much or watching a head sail across the garage because it wasn't clamped tight enough entered my head. Plus the nagging doubt of are the top faces of cylinder head bolt holes really parallel to the bottom face, are they actually a single plane or were they just cleaned up to provide a clamping surface without regard to anything? The fact that after the heads are assembled on the engine and the nuts tightened then the brackets that secure the UFM to the engine sit on the nuts leads me to believe locating up down in that location would be okay. But how to secure safely and leave a clear tool path, that is what bothers me. It would be interesting to see how they were located when originally manufactured or how the new replacement heads are done. Steven [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Fogging for Mosquitos; Valve Guide Issues and Solutions
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