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Unread 08-11-2010, 11:24 AM
yodaddy yodaddy is offline
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Join Date: Sep 2009
Location: New Hampshire
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I have an '83 V20 Cuddy with the same motor. Turning a 15x17 prop and get about 35 mph on GPS @ 4000 rpm WOT with a heavy load on (3 men, full tank of fuel, and 30 gal livewell). I'm going to drop another inch of pitch to get into the 4200-4600 WOT band. Will end up with a top end of 33-35 mph. I installed a Faria fuel flow meter and it looks like the sweet spot for cruising is about 24 mph @ 3000 rpm, getting 3.5 mpg. Trim tabs do help getting on plane faster, and are essential for any rough water / offshore running.

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Quote:
Originally Posted by powrguy View Post
What kind of performance can I expect from a V20 with the 4 cylinder I/0 (cuddy cabin model)?

Will it need trim tabs to get on plane quickly? What pitch prop (average loaded) and what kind of cruise/WOT speed?

thanks
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1983 V20 Cuddy, 3.7L/165hp Mercruiser


Fishing out of Portsmouth NH
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