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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
motor build beginning!
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<blockquote data-quote="vince998" data-source="post: 36939" data-attributes="member: 261"><p>Before using sealant, put everything together "dry" first.</p><p>Make sure the primary main bearing outer and ball race is in position with circlips, and oil scroll is on the mainshaft</p><p>Once you´ve got the cases together, assemble engine sprocket, ESA etc and do up tight, and make sure everything rotates freely, and the rods are central in the bores.</p><p>Once you´ve crossed this hurdle, dissasemble, oil, apply sealant (i use the green stuff from Kawasaki, or well seal) and reasemble.</p><p>Until you know everything is as it should be, stripping and reasembling is a pain in the butt with sealant and oil everywhere.</p><p>Don´t trust your judgement until that ESA nut is done up real tight. Only then will you know if everything is as it should be (even half tight can hide a clearance problem which will be difficult to source later as the whole motor is fairly tight)</p><p></p><p>Main Pifalls:</p><p>Main race outers to wide (rubbing on the crank)</p><p>Reclaimed housings insifficiently relieved (rubbing on the crank)</p><p>Rods out of centre (various causes)</p><p>oil scroll wrong dimensions (ball race inner will be forced inwards causing drag, or outwards preventing inner face contact of the cases)</p><p>Drag on inside of engine sprocket (if a mainshaft seal has been fitted and insufficient clearance present)</p><p></p><p>(I´ve had all of the above)</p></blockquote><p></p>
[QUOTE="vince998, post: 36939, member: 261"] Before using sealant, put everything together "dry" first. Make sure the primary main bearing outer and ball race is in position with circlips, and oil scroll is on the mainshaft Once you´ve got the cases together, assemble engine sprocket, ESA etc and do up tight, and make sure everything rotates freely, and the rods are central in the bores. Once you´ve crossed this hurdle, dissasemble, oil, apply sealant (i use the green stuff from Kawasaki, or well seal) and reasemble. Until you know everything is as it should be, stripping and reasembling is a pain in the butt with sealant and oil everywhere. Don´t trust your judgement until that ESA nut is done up real tight. Only then will you know if everything is as it should be (even half tight can hide a clearance problem which will be difficult to source later as the whole motor is fairly tight) Main Pifalls: Main race outers to wide (rubbing on the crank) Reclaimed housings insifficiently relieved (rubbing on the crank) Rods out of centre (various causes) oil scroll wrong dimensions (ball race inner will be forced inwards causing drag, or outwards preventing inner face contact of the cases) Drag on inside of engine sprocket (if a mainshaft seal has been fitted and insufficient clearance present) (I´ve had all of the above) [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
motor build beginning!
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