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  Should I raise the motor one hole?

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Author Topic:   Should I raise the motor one hole?
Perry posted 02-09-2003 02:00 AM ET (US)   Profile for Perry   Send Email to Perry  
The anti-vent plate is about even with the bottom of the hull on my 16' Dauntless. The Honda 90 is set on the second hole from top. I heard the plate should be 1 to 1 1/2" from the bottom of the hull. Is it too low?
Clark Roberts posted 02-09-2003 08:01 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Perry, give it a try... only way to tell and two holes up may be the ticket! Watch cooling water flow and engine temp. Anti-cavitation plate approx. one inch above keel should be about right. Happy Whalin'.. Clark.. SCN
Perry posted 02-09-2003 02:44 PM ET (US)     Profile for Perry  Send Email to Perry     
Thanks Clark. I'll try to test for cavitation with current set up before raising motor. If it doesen't cavitate while making sharp port and starboard turns when on plane, I'll raise it a notch. It currently turns 5900 rpm at WOT with 16" pitch ss prop. What improvements can be achieved by raising a motor? Better hole shot, top end, over all handeling?
Clark Roberts posted 02-10-2003 07:51 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Advantages can be (due to less drag from lower unit): higher top speed; better fuel economy; possibly better handling but trim-up may be limited by blow out... I run engines as high as possible (usually on a set-back/jack plate with Doel-Fin to put a cap on prop) to reduce draft and make for better shallow water running. Hole shot may suffer from blow out if engine is mounted really high... in this case it's good idea to install a water press gauge and temp gauge to be safe! Happy Whalin'/.. clark.. SCN

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