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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
LM 25 cylinder head brackets
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<blockquote data-quote="oexing" data-source="post: 92537" data-attributes="member: 1493"><p>In the pictures you find an idea what it could look like, just a quick wood Dremel job recently. I am busy in other places of the engine so that will be a much later project . I will have lots of position bushes from crank case to top of head brackets like Japs do, so there will be just plain 10 mm studs from the bottom and only 4 top nuts holding brackets and heads down . That may help a little to fight bending heads and out of line valve guides under heat and high combustion forces but that was not my first idea, just read about it lately here. But I could imagine shoving a piece of flat bar under the head bracket a tad higher than measured from the machined head space between fins above the center of combustion chamber up to the bracket so this will no doubt help a lot keeping the head straight. You could not do this with a bunch of high nuts and washers there, too crude to get a good measurement for that bar - or so I think. At least it is another topic for discussions. </p><p></p><p> Vic</p><p>[ATTACH=full]20464[/ATTACH]</p><p></p><p></p><p>[ATTACH=full]20465[/ATTACH]</p><p></p><p></p><p>[ATTACH=full]20466[/ATTACH]</p><p></p><p></p><p>[ATTACH=full]20467[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 92537, member: 1493"] In the pictures you find an idea what it could look like, just a quick wood Dremel job recently. I am busy in other places of the engine so that will be a much later project . I will have lots of position bushes from crank case to top of head brackets like Japs do, so there will be just plain 10 mm studs from the bottom and only 4 top nuts holding brackets and heads down . That may help a little to fight bending heads and out of line valve guides under heat and high combustion forces but that was not my first idea, just read about it lately here. But I could imagine shoving a piece of flat bar under the head bracket a tad higher than measured from the machined head space between fins above the center of combustion chamber up to the bracket so this will no doubt help a lot keeping the head straight. You could not do this with a bunch of high nuts and washers there, too crude to get a good measurement for that bar - or so I think. At least it is another topic for discussions. Vic [ATTACH=full]20464[/ATTACH] [ATTACH=full]20465[/ATTACH] [ATTACH=full]20466[/ATTACH] [ATTACH=full]20467[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
LM 25 cylinder head brackets
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