Broken cavitation plate

aboynton

Recruit
Joined
Mar 11, 2004
Messages
4
Hi everyone,<br /><br />Last weekend, I was launching from the Berkeley Marina. I put the boat in reverse and had the wheel cut (unintentionally, of course) and backed it into the adjacent dock. I damaged the prop, no big deal. But, upon returning from an all day excursion on the SF Bay, I pulled the boat out and became sick over the damage. <br /><br />I broke my cavitation plate. (See links to photos below)<br /><br />Picture 1 <br /><br /><br />Picture 2<br /><br />So much has broken, I think welding it is out of the question.<br /><br />As far as I see it, I have these options:<br /><br />1.) Replace the entire lower case. I price a used one at $150, plus cost to swap gears out of broken case at $500 = $650.<br /><br />2.) Add a full hydrofoil (whale tail style) which will act as a cav. plate.<br /><br />I'm not sure option 2 will even work. Obviously, I would love to save the $$. <br /><br />Any thoughts? This has made me really sick!! :confused: :( <br /><br />BTW, it is a Mercruiser 1976 233HP 351 windsor with an "early" style outdrive.<br /><br />Thanks in advance for any help.<br /><br />Adam
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Broken cavitation plate

Moving to I/O
 

Mark C.

Recruit
Joined
Jan 18, 2004
Messages
5
Re: Broken cavitation plate

Hi Adam,<br /> If you he piece that was broken off it can be TIG wielded back on. Most wield shops will be able to do it for a reasonable amount. I had a skeg wielded back on for $50.00.<br />It doesn't look too bad. :) <br />Mark
 

OBJ

Supreme Mariner
Joined
Dec 27, 2002
Messages
10,161
Re: Broken cavitation plate

aboynton....you originally had posted in the Merc/Mariner outboard forum. JB moved it here to the I/O repair forum.
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Broken cavitation plate

hello<br /> I have seen worse run with no problems. as long as it does not cavitate it will just be ugly. you may wish to bond the trim tab anode better now.<br /> no worries. <br /> good luck and keep posting
 
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