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2000 Horizon 170 3.0 Cobra outdrive Propeller https://www.smwebhead.com/phpBB3/viewtopic.php?f=3&t=23691	Page 1 of 1

Author:	RonJ [ Wed May 26, 2021 5:53 pm ]
Post subject:	2000 Horizon 170 3.0 Cobra outdrive Propeller
I thought I should start my own thread on this topic. I'm looking to replace the prop on my Horizon 170. Can someone tell me what prop would have been stock on this boat when it was new. There are no markings on the prop that's on the boat that I can make any sense of. Looking for the diameter and pitch if someone can help me out. Thanks, Ron

Author:	Surface Interval [ Thu May 27, 2021 8:39 pm ]
Post subject:	Re: 2000 Horizon 170 3.0 Cobra outdrive Propeller
The original prop should have been a 14 1/4 dia. x 21 inch pitch. The Volvo/OMC outdrive propshafts and props have a different number of splines than Merc and other brands. I believe the Merc has 15 splines, and the Volvo has 19 splines. Go to the www.Fourwinns.com site and click on "Owners". Select the year. You can find a lot of general info for your boat in "Fast Facts", Owner's manuals, Parts catalog, sales brochure info, merchandise, and more. The Fast Facts identified the 14 1/4 x 21 prop. This is a common size prop that has been used in many different boat/engine combinations. Volvo/OMC changed the gear ratio in the outdrive to work with different engine power choices.

Author:	RonJ [ Thu Jan 13, 2022 6:48 pm ]
Post subject:	Re: 2000 Horizon 170 3.0 Cobra outdrive Propeller
Ok so I kind of figured it out. Turns out the complete drive system has been replaced. The engine and drive is actually a 1988 3.0 OMC cobra and not the original drive train at all. If anyone has this drive system in a similar weight hull (2000 lbs) I'd appreciate suggestions on propellers. Thanks for the help, Ron

Author:	LouC [ Fri Jan 14, 2022 4:10 pm ]
Post subject:	Re: 2000 Horizon 170 3.0 Cobra outdrive Propeller
That does seem odd, someone had a 2000 Four Winns and put a 1988 Cobra drivetrain in it? Anyway you can find that same information in the same place, look for the fast facts publication for that year and it will list the standard prop. I found out that my boat which came with a 14.5x19 was actually supposed to have a 15x17 prop on it. I later switched to a 15.5x15 for better acceleration, although it does limit top speed.

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