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General Minitrail Talk
Tech Area
S65 carb woes
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<blockquote data-quote="allenp42" data-source="post: 188640" data-attributes="member: 8785"><p>I agree. Don't see how it could run at all. I have a ND (Nippon Denso) advancing flywheel, Mitsubishi advancing flywheel, and a Hitachi advancing flywheel. The one thing they all have in common is the fat side of the lobe faces toward the keyway. As the flywheel turns CCW, you can see the points open and close as it passes the timing marks on top top. The only way I can time one with the timing advancing 180 off is to use opposite "window" (timing marks not in sight), <u>which is 180 degrees off</u>. </p><p></p><p>I took a pic to show the fat part of the lobe (Hitachi). If you look closely, you will see a slight bevel edge on the cam lobe. From what I have seen, the amount of bevel may vary a bit but the grind for the lobe is always the same. For what's worth, the one Mitsu flywheel I have the bevel is a little more CCW than a Hitachi, but it's still pointing more toward the keyway than the other possibility. </p><p></p><p>I used a green sharpie to make the bevel edge. This should make it easier to determine if the timing mechanism is correct. </p><p></p><p>However if I were in your shoes, I would still probably hook up a timing light just to be sure that nothing crazy is going on with the timing.</p></blockquote><p></p>
[QUOTE="allenp42, post: 188640, member: 8785"] I agree. Don't see how it could run at all. I have a ND (Nippon Denso) advancing flywheel, Mitsubishi advancing flywheel, and a Hitachi advancing flywheel. The one thing they all have in common is the fat side of the lobe faces toward the keyway. As the flywheel turns CCW, you can see the points open and close as it passes the timing marks on top top. The only way I can time one with the timing advancing 180 off is to use opposite "window" (timing marks not in sight), [U]which is 180 degrees off[/U]. I took a pic to show the fat part of the lobe (Hitachi). If you look closely, you will see a slight bevel edge on the cam lobe. From what I have seen, the amount of bevel may vary a bit but the grind for the lobe is always the same. For what's worth, the one Mitsu flywheel I have the bevel is a little more CCW than a Hitachi, but it's still pointing more toward the keyway than the other possibility. I used a green sharpie to make the bevel edge. This should make it easier to determine if the timing mechanism is correct. However if I were in your shoes, I would still probably hook up a timing light just to be sure that nothing crazy is going on with the timing. [/QUOTE]
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