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FJR Motorcycle Forums
Technical & Mechanical Problems
Pulling dirty air into the engine via Audiovox
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<blockquote data-quote="wfooshee" data-source="post: 544415" data-attributes="member: 6354"><p>First, it's not steadily pulling air through that tap. Once the chamber in the CC is reduced to what vacuum the engine can apply, there is no more airflow until the CC has to apply vacuum to its diaphram to open the throttle, and that amount would be so miniscule compared to actual combustion air intake I can't see it being a problem. That vacuum doesn't come directly from the engine, it comes from the reservoir, which is then refreshed by engine vacuum.</p><p></p><p>Note that the Audiovox unit <em>does</em> have a built-in vacuum reservoir with a check valve, it's just not big enough to make some folks happy. (Mostly because the FJR runs so little vacuum compared to most cars, for which the unit was designed.)</p><p></p><p>Be assured that the vacuum tap does not have a steady flow of unmetered air into the engine.</p></blockquote><p></p>
[QUOTE="wfooshee, post: 544415, member: 6354"] First, it's not steadily pulling air through that tap. Once the chamber in the CC is reduced to what vacuum the engine can apply, there is no more airflow until the CC has to apply vacuum to its diaphram to open the throttle, and that amount would be so miniscule compared to actual combustion air intake I can't see it being a problem. That vacuum doesn't come directly from the engine, it comes from the reservoir, which is then refreshed by engine vacuum. Note that the Audiovox unit [I]does[/I] have a built-in vacuum reservoir with a check valve, it's just not big enough to make some folks happy. (Mostly because the FJR runs so little vacuum compared to most cars, for which the unit was designed.) Be assured that the vacuum tap does not have a steady flow of unmetered air into the engine. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Pulling dirty air into the engine via Audiovox
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