<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by transamz9 »</TD></TR><TR><TD CLASS="quote"> 71.8 gps
5900 rpm
12psi
don't know prop height but have adjusted up and down from original setting for best speed and handle.I'm not able to drive the boat above 68 gps if plate is any lower.
prop is tempest plus 26 stock (no work done yet)![]()
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From (and based SOLELY on your info above), I'd make the following observations:
-RPM's: You're pretty close. Could perhaps use to spool the engine up another 100-150 RPM's.
-Water Pressure: TOO LOW. If your engine mounting height is set for best handling, you might benefit from blocking off 2-3 of the side "water intakes" at the top of the inlets (see: http://www.bbcboards.net...wpics )
-Prop: I'd recommend that you have this prop worked, or perhaps try a Fury (25 Pitch, more than likely would get you closer to your target RPM). Mark Croxton can work his "magic" on your Tempest Plus, if you'd prefer.
-Hull: Look carefully at the transom and pad of your hull. Observe to see if you have any transducers, paddle wheels, etc. that are protruding downward into the flow of water across the transom. Additionally... take a close look at the last 2' of the keel and pad. Make sure there are no abnormalities.... "hooks", etc. Before making any adjustments here.... make sure you do your research- and find someone VERY knowledgeable to assist you.![]()