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Another transom repair '88 Scarab

Old 08-29-2020, 09:01 PM
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Default Another transom repair '88 Scarab

Hi all, I've been lurking around here for a while and finally haven't been able to answer a question with the search button, so here goes.

I have a 1988 Scarab 302 with twin 225 Evinrudes. I hear they weren't called 302's till later, but you get it. I just bought the boat a few months ago and noticed that the bracket was pulling free from the transom on the ends when I bought it. I knew the transom was rotting, but didn't quite realize how bad it was until I found a broken stringer/kneeboard. Right in the bilge there is a nice crack where the transom kneeboard meets the stringer. I did not see the crack in the bilge during my inspection, so I assume it cracked while I was running it this summer or while I was trailering it from Florida to Montana, about 2500 miles.

My question here is how would you pro guys attack this? Would you start on the outside and just not laminate the front of the first sheet going into the transom so that you could tear the front apart and work from the transom forward after repairing the transom core? I see that guys have been cutting the cap/floor at the inspection covers to do transom work, but I'm wondering if i shouldn't cut a little further forward to tie in the new stringer. My plan is to start by replacing the core of the transom from the outside and just not laminate the first board that goes in. After the outside is glassed and gel coated I'll tear the fiberglass out and work forward until I get to good wood or the bow, whichever comes first. I have done some fiberglass before and am confident that I can accomplish this, but it is my first major fiberglass repair so please... be gentle.

I will add pictures when I get to my 9 more posts under my belt.




Old 08-29-2020, 11:00 PM
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I’m curious as to what use you could have with a scarab in Montana.
Old 08-31-2020, 10:53 AM
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It does seem a little out of place out here, but there are some pretty big reservoirs out here that I can put her on. My wife and I have four kids, and aboard my dad's 22ft center console its just a little bit tight. So I was looking for something a little larger, budget friendly, and fast enough for me to enjoy when I'm by myself.
Old 09-01-2020, 12:15 PM
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Ok, time to derail. I don't honestly think that I have enough knowledge about how boats are built or engines to contribute to anyone else's posts. I absolutely don't want to add pointless posts to any of the posts around here. So to get me up to my 10 posts required to post my pictures I'll go into some more detail about why I want to start on the rear and move forward with the transom. Feel free to ask me questions or throw in anything you guys want to add.
Old 09-01-2020, 12:24 PM
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The transom is so mushy that I have stress cracks that formed in the gelcoat down by the chines on the transom. One in particular turned south and went around the edge of the transom. Its running about 2-3 inches along the chine toward the bow of the boat. My thought is that I'm going to have to glass around the edge of the transom, but I'm not sure it its into the glass or if just the gelcoat is cracked. If I do have to go around the edge of the transom I don't want to lose the angle or shape of the transom, so I figured the two-step approach would be fairly simple for a rookie like me to accomplish without messing the boat up beyond all repair.
Old 09-01-2020, 01:24 PM
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99% sure the glass is fine, glass can flex a lot and not get hurt, gelcoat not so much it’s really brittle and why it’s cracking.

if I’m understanding you right, you want to tear into and replace the transom from outside. Then tear into the front side of it to tie it into and replace any damaged stringers???

if you have stringer work and the transom them I would go straight on the inside and replace it that way.

there are two ways to replace a transom, from the front or from the back. Nobody does both.

the gelcoat cracks can be dremeled out and a patch kit can fix those. There is no need to cut it all out just to fix some cracks.
Old 09-02-2020, 09:28 AM
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Awesome, thank you. I saw the long round cracks in the gel coat from where the bracket was flexing the outside of the transom and figured the glass was junk too. Since I'll be working on the inside do I still need to leave a few inches of material to glass back into or am I good to cut the inside all the way to the hull? Can I just tab back into the hull with a few layers of 1708 and maybe a layer of chop strand and be done?
Old 09-02-2020, 09:40 AM
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After you get up to 10 posts, you can post pictures. That would help.
Old 09-02-2020, 09:56 AM
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I had a 1990 Scarab Sport 302 that had a bracket for my outboards. The bolts that Wellcraft attached the bracket to the transom never had any sealant put on them so when water got into the bracket from a bad gasket on the inspection port the water seeped it's way into the transom and rotted it out. I had an estimate of $3K to replace the transom but ended up costing me over $6K because the shop that did it told me the boat was built like a brick shithouse and it took them way more hours than they thought it would take. I may still have some pictures of the work in process in an old computer I can email to you if interested. They cut from the inside at the mid point of the scuppers and left the outside of the transom intact.

It turned into a huge argument about the double the cost and it took them 4 months instead of 1 month to do the work. They basically held my boat hostage until I paid them the $6K to get my boat. By the time I paid them their money and got my boat back it was to late in the season to even bother putting it in so I paid $1,650 for a dock for the season and never used it.
Old 09-02-2020, 11:46 AM
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Time to de-rig everything back there and get it ready. Do it from the inside. You'll want to tie the stringers to the transom well. Overbuild it. Nasty work but not that difficult. You need a covered place to work. Post some pics, when you can.
Old 09-02-2020, 11:58 AM
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Hahaha, I'm unlocked again

Russ- I'll shoot you a PM for those pics. If it's not too much trouble I'd love to see them. I've run across a few posts or threads of yours where I saw your story about that. That was such a shady deal that I'm not even involved and it pisses me off too.



Last edited by quarterwalker; 09-02-2020 at 11:59 AM. Reason: Adding text
Old 09-02-2020, 12:05 PM
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Seacat- I've got it mostly derigged. Engines are off and mounted to a stand. Bracket and everything on the exterior or going through the transom has been removed. I do need to pull what's mounted to the interior of the transom, but that's coming soon.
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Old 09-02-2020, 12:13 PM
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There is a Shop in Florida that have Completely redone Scarab 302's Transoms...Deck Off Etc. It is Boathaus Marine in the Sarasota area and a member here with the same name that Owned the Business...He did some nice work over the years...Look him up and search this forum...Best of luck to you...I owned 2 Scarab 302's!

Here is a link to his 302 Repair! http://www.boathausmarine.com/302-scarab.html



Last edited by AIKO AIKO; 09-02-2020 at 12:22 PM.
Old 09-02-2020, 12:47 PM
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Aiko- Thanks for the tip about Boathaus Marine. I was hoping Boathaus would chime in at some point, if needed. But I havent even got pics up to show the damage I'm looking at. I've seen the 302 on his website and another thread where his shop converted a 31' contender cuddy cabin to a 31' open. If I have trouble getting the floor put back together I had planned to give him a call to possibly cut out my terrible patch and redo the floor where I had to tie it back in. Trailering it back to Florida isn't out of the question. There is a rented out 12k lift in Long key with my name on it if I bring it back down next summer.
Old 09-02-2020, 12:51 PM
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Originally Posted by quarterwalker View Post
Aiko- Thanks for the tip about Boathaus Marine. I was hoping Boathaus would chime in at some point, if needed. But I havent even got pics up to show the damage I'm looking at. I've seen the 302 on his website and another thread where his shop converted a 31' contender cuddy cabin to a 31' open. If I have trouble getting the floor put back together I had planned to give him a call to possibly cut out my terrible patch and redo the floor where I had to tie it back in. Trailering it back to Florida isn't out of the question. There is a rented out 12k lift in Long key with my name on it if I bring it back down next summer.
They do nice work....They Enclosed the Transom on a 1988 24 North Coast my brother owned some years back! Looking forward to your Pictures!
Old 09-02-2020, 01:13 PM
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Originally Posted by AIKO AIKO View Post
There is a Shop in Florida that have Completely redone Scarab 302's Transoms...Deck Off Etc. It is Boathaus Marine in the Sarasota area and a member here with the same name that Owned the Business...He did some nice work over the years...Look him up and search this forum...Best of luck to you...I owned 2 Scarab 302's!

Here is a link to his 302 Repair! 302 Scarab deck recore


What did they charge you for that??
Old 09-02-2020, 01:34 PM
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When I pulled the rubrail it looks as if someone has pulled the cap off this boat before. There are several empty screwholes, and a few places where the screws were ran in too tight and cracked through the cap. I haven't got the rubrail pulled all the way off, just to about the center console. Can the cap and hull be flexed enough to shove some 4200 in there to seal up the joint?
Old 09-02-2020, 01:39 PM
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Originally Posted by RussH View Post
What did they charge you for that??
It wasn't done to my Boat but maybe Rob from Boathaus will be here to answer some questions!
Old 09-03-2020, 02:01 PM
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Some pics....





Last edited by quarterwalker; 09-03-2020 at 02:13 PM. Reason: Add pics again
Old 09-03-2020, 02:05 PM
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