Thread: What is the best size prop for a 1989 Sport 20 with 200hp blackmax merc?
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Unread 03-08-2011, 06:53 AM
CharlestonSC CharlestonSC is offline
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Join Date: Apr 2009
Location: Greenville and Charleston/SC
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What is the best way to see if the tach is correct? I suspect that is off a bit because when I am WOT 5900 rpm just don't sound like 5900 but that it sounds like a slower rpm could just be me.
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