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Classic Goldwing Technical Forums
GL1100
Time for me to address the 800lb Gorilla in the room.(Engine knock thread) REVIVED!
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<blockquote data-quote="scdmarx" data-source="post: 18329" data-attributes="member: 92"><p>It's a theory, but easy for me to buy into because I don't know what's causing the noise. Also easy for me to buy into because I have always associated the "tapping" and "ticking" noise with the top end, and the "solid knocking" noise with the bottom end. To tell you the truth, I don't think I've ever "heard" valves floating. Maybe that's because it happens at higher RPM's when there is a lot of other noises going on. But I would really expect it to be a ticking and tapping noise if I did hear it. I like his theory of odd ball cylinder pressures making the bottom end say <span style="color: #FF0000">"ouch"</span>. And the better cam making it run quieter sorta backs that up.</p><p></p><p>I've been thinking about this most of the day. I have a few questions that I'm not sure how to ask. First, I'm just a little surprised to see this on an OHV engine. I mean it's not like the cam has to deal with the reciprocating mass of flexing pushrods and all that. </p><p>Are the 1000 & 1100 solid adjustment valve trains an engineering flaw? Were they cutting corners to save manufacturing costs? Or is this mostly a "lack of maintainence" and-or "improper valve adjustment" and-or "incorrect luricant" issue that has taken it's toll over the years?</p><p>Another thing I'm questioning in my mind is doesn't the 1200 have hydraulic lifters? Could this have a cushioning effect on the cam, or would this just be more slack that has to be taken up within the time frame of the event (opening/closeing cycle of the valve)? (why is the 1200 cam in better shape?)</p><p></p><p>Hmmm.....so many questions, and so little pizza left.</p></blockquote><p></p>
[QUOTE="scdmarx, post: 18329, member: 92"] It's a theory, but easy for me to buy into because I don't know what's causing the noise. Also easy for me to buy into because I have always associated the "tapping" and "ticking" noise with the top end, and the "solid knocking" noise with the bottom end. To tell you the truth, I don't think I've ever "heard" valves floating. Maybe that's because it happens at higher RPM's when there is a lot of other noises going on. But I would really expect it to be a ticking and tapping noise if I did hear it. I like his theory of odd ball cylinder pressures making the bottom end say [color=#FF0000]"ouch"[/color]. And the better cam making it run quieter sorta backs that up. I've been thinking about this most of the day. I have a few questions that I'm not sure how to ask. First, I'm just a little surprised to see this on an OHV engine. I mean it's not like the cam has to deal with the reciprocating mass of flexing pushrods and all that. Are the 1000 & 1100 solid adjustment valve trains an engineering flaw? Were they cutting corners to save manufacturing costs? Or is this mostly a "lack of maintainence" and-or "improper valve adjustment" and-or "incorrect luricant" issue that has taken it's toll over the years? Another thing I'm questioning in my mind is doesn't the 1200 have hydraulic lifters? Could this have a cushioning effect on the cam, or would this just be more slack that has to be taken up within the time frame of the event (opening/closeing cycle of the valve)? (why is the 1200 cam in better shape?) Hmmm.....so many questions, and so little pizza left. [/QUOTE]
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Classic Goldwing Technical Forums
GL1100
Time for me to address the 800lb Gorilla in the room.(Engine knock thread) REVIVED!
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