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  #21  
Old 04-27-2010, 06:39 PM
rickg rickg is offline
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Join Date: Aug 2009
Location: Palm City,FL.
Posts: 54
Default Re: 18SF guys, anyone run a 25\" motor?

I also have a 78 18sf that i just restored last april the original transom failed long ago had a make shift 25 added to the boat.I have a 1990 150 merc that weighs 404lbs deck did not self bail,now with the new floor raised 2 inches and transom done correctly i have no problem with self bailing,but do get water on deck in 2-4 seas anchored.
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  #22  
Old 05-04-2010, 03:03 PM
Bigshrimpin Bigshrimpin is offline
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Join Date: Dec 2002
Location: Onset, MA
Posts: 2,712
Default Re: 18SF guys, anyone run a 25\" motor?

Quote:
I also have a 78 18sf that i just restored last april the original transom failed long ago had a make shift 25 added to the boat.I have a 1990 150 merc that weighs 404lbs deck did not self bail,now with the new floor raised 2 inches and transom done correctly i have no problem with self bailing,but do get water on deck in 2-4 seas anchored.
I'm running the same setup on a 76 SF18 with two 1/2 thick aluminum plates raising the transom to 25" (2.0L Merc 150). The deck self bails with one person unless the baitwell is full. I made a quick 8" splashwell gate with PVC "Tuf Board" which helps contain the water.
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  #23  
Old 05-04-2010, 11:49 PM
jorgeinmiami jorgeinmiami is offline
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Join Date: May 2005
Location: Miami Fl
Posts: 1,613
Default Re: 18SF guys, anyone run a 25\" motor?

nfortunately, I'm thinking of selling my 1999 Johnson 175 carb, 145 original hours, but 20", so he can't use it. I'm getting closer and closer to having the transom enclosed and bracket installed on my 79 MA, but understand I will need a 25" engine. Vezo, Part II.


How did your MA run with that engine...are self bailing? I too have a 20 MA and am at the point that I'm thinking of what power to hang on the back
Any feedback would be appreciated
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  #24  
Old 05-05-2010, 01:08 AM
adamcannon adamcannon is offline
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Join Date: Aug 2009
Location: Newport, North Carolina
Posts: 63
Default Re: 18SF guys, anyone run a 25\" motor?

My 1975 18sf has a factory 20" transom. The guy I bought it from said I needed to raise the transom for sure. He had a Yamaha 100 four stroke on it and he had big issues with self bailing and following seas. I dont have a motor yet but I am looking at a 2004 Johnson 150(391 lbs. dry). I am redoing mine right now. I am closing in the transom and putting a bracket with 26" setback and a full platform on it. My drains are going out the sides of the boat in front of the full width transom box. This will put the drain holes about 15" or more from the stern. I am also going to raise the floor, but Im not sure how high I should come up with it . I want it to self bail in a hurricane if possible. I hope with the full transom I wont have to worry about the following seas to much.
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1975 Seacraft 18SF w/2004 150hp Johnson 2-stroke on a 26" bracket
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  #25  
Old 05-30-2010, 02:58 AM
McGillicuddy McGillicuddy is offline
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Join Date: Dec 2007
Location: 32.77 N, 117.01 W
Posts: 2,184
Default Re: 18SF guys, anyone run a 25\" motor?

The water in the bilge is like leaking through the scuppers. I'm not sure if the 18 has thru-hull scuppers, but if so its a common problem and an easy fix.

What happens is the the scupper tubes separate from the glass-wrapped wood block that encases them and incoming water begins to rot through the wood block and trickles along the stringer falling into the bilge.

Any number of ways to fix it, but do a search for scupper repair over 3 years or so and you'll find a bunch of insight from many who've shared the experience.

Good Luck!
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