Fixed My Cavitation problem

You know the drill..

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mobldj
Posts: 78
Joined: Tue Jun 03, 2014 9:55 am
Location: Moreno Valley Ca

Fixed My Cavitation problem

#1 Post by mobldj » Fri Sep 15, 2017 8:57 pm

2013 xcursion with a 150 merc.tried everything,lower engine,change props.put on a whale tale,even put on a jack plate to lower it more.

come to find out I was missing a 2dollar and 10 cent plastic washer/grommet that goes between the lower hub area and the prop.makes tons of sense,keeps the exhaust gas from escaping around the prop huband going thru the middle of prop as designed.

hope this helps anyone.

since I put this on not 1 bit of cavitation
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2014 Excursion x23c
150 merc

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ROLAND
Posts: 4248
Joined: Sat Oct 03, 2009 4:29 am

Re: Fixed My Cavitation problem

#2 Post by ROLAND » Sat Sep 16, 2017 1:44 am

Congrats on finding your issue... Good catch... a 2 dollar part... enough to make you pull your hair out..
Roland & Jo
2010 Bennington 20 Sfi
Yamaha 75 4 Stroke
Shreveport, Louisiana

Bryden24shp
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Location: Iowa/Lake of the Ozarks, Mo.
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Re: Fixed My Cavitation problem

#3 Post by Bryden24shp » Sat Sep 16, 2017 4:32 am

Good catch! How did you figure that out? And next question, what happened to the factory one? Was it just missing from the get go? This is going into my "Must Remember" file. Nice find!!!
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rancherlee
Posts: 580
Joined: Tue Jul 13, 2010 5:59 am
Location: Eveleth MN

Re: Fixed My Cavitation problem

#4 Post by rancherlee » Sat Sep 16, 2017 11:12 am

Never seen an outboard with a plastic ring there? I've seen some plastic rings that clip on small bore props so they can be used on large bore cases before to prevent that issue.
1988' Kennedy 20' "Haley's Comet"
Rebuilt 2016 with 25" single strake outer tubes and a 25x23" straked U-tube
2003 Suzuki DF140 - Yamaha 9.9HT kicker - 39.1@6300rpm

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