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05-04-2022, 12:54 PM #1Junior Member
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1979 Hawaiian Outboard Boat Project
So the Project begins, This is a 1979 Hawaiian 21' boat, from what I know they were pretty much all jet boats but did make this one model made for an outboard for a couple years. Anyone with more info on these boats or pictures of one you have would be awesome to see/read.
My plan is to do a full composite rebuild, I will try and document as much as I can on this thread.
I am not an expert, I have never rebuild a boat like this- So any and all comments will be taken and good criticism - I also might do something that could be done better, I will post about it and then do better next time!
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05-04-2022, 03:18 PM #2
Very cool boat, looking forward to the build! I had never rebuilt a boat before mine and it turned out ok. Lots of good help here.
'78 Hydrostream Viking/'98 225 ProMax
Restoration: https://www.screamandfly.com/showthr...Viking-rebuild
Pictures: https://www.flickr.com/photos/152974...57708863869223
Videos: https://www.youtube.com/tnels
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rgsauger liked this post
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05-04-2022, 03:23 PM #3Junior Member
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tnelsmn liked this post
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05-04-2022, 03:26 PM #4
Thanks man! Hope it helps you.
'78 Hydrostream Viking/'98 225 ProMax
Restoration: https://www.screamandfly.com/showthr...Viking-rebuild
Pictures: https://www.flickr.com/photos/152974...57708863869223
Videos: https://www.youtube.com/tnels
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05-05-2022, 08:24 AM #5
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tnelsmn thanked for this post
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05-05-2022, 08:56 AM #6
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tnelsmn liked this post
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05-08-2022, 12:43 PM #7
very nice lines , always loved the west coast Daycruiser style boats, even has a pad bottom ! ought to be a good runner , and those tanks are awsome , good range between fillups
Definatly take a hard look at the wood in the transom , looks like the stringers are shotLast edited by mr fun; 05-08-2022 at 12:48 PM.
most overnite successes usually take at least 10 years
Certified turd polisher,
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05-26-2022, 09:00 AM #8Junior Member
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05-26-2022, 09:07 AM #9Junior Member
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Couple questions that you all might have good answers to:
The boat originally had saddle tanks but I would rather extend that back deck area and do an aluminum tank center with the transom, I was thinking around 30gal. This will keep the weight back and centered I believe and I will not have to have fuel lines with a T running to the back.
Also I know this is a page where fuel injected racing two strokes are the way, but I have a 2020 150hp Tohatsu/honda here ready to mount on the boat. I'm leaning toward doing a low water pick up on its gear case and seeing what it will do! I don't have plans on racing this boat, just want it to be in the 60-70mph range if possible and be comfortable. Let me know what you guys think!
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05-27-2022, 06:14 PM #10Team Member
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I don’t think 150 HP is enough. I have two direct injected 2 strokes and they are fuel efficient
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MrBoatYard liked this post
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06-02-2022, 10:18 PM #11
This is going to be a very cool build. Definitely post a lot of pics! Sadly, I agree that 150 hp is most probably not going to get you where you want to be. It is certainly worth bolting on and trying and having fun with that if you want to post a big speed number, you probably need 75 more horsepower. Your boat is definitely not a potato chip.
1990 Shadow bass boat w/ 2.4 200 Merc. Totally resto'd boat and love it!
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10-04-2022, 03:47 PM #12Junior Member
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Been extremely busy with work but it looks like we are back on the horse and moving forward. I got the transom laminated to the boat. I used 2 layers of 1.5oz csm and have plans of going overtop and around with 2-3 layers of 1708 bi axial. I have also started to see a number of some of these offshore boats running those Honda 250's. I am a Tohatsu dealer and can get a 250 Tohatsu which is a Honda at cost. I also have a good deal from a buddy on a newer 250R Merc but its quite a bit more expensive. Just playing around with engine ideas.
Got the clamp idea from all of you guys and it worked out great!
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10-08-2022, 11:57 AM #13Team Member
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I have a smaller version of what is essentially your boat... An 18 footer. Side tanks, a hull design that is usually V8 jet or V-drive, but a few were made as outboards. Looks like this:
Mine has a 150 and I'm sure it's a good bit lighter than yours. The 150 is good for maybe 60mph with just me in it. Goes a little over 50 with wife and two little girls and our gear for the day.
HTH
-Peter"padded wonder"
__________
the wet:
Hydrostream Viper, 140 v4 crossflow, some Raker props
16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
17' boston whaler alert, 90 merc fourstroke
13' boston whaler, 40hp yamaha
the dry:
2003 bmw ///M5
1993 mustang/griggs racing road race car
and a handful of clunkers
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10-31-2022, 08:48 AM #14Junior Member
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11-01-2022, 06:03 PM #15Junior Member
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Grinded out the majority of the stringers today. Boat originally had 3 stringers but I plan on just replacing two - my thoughts were, I've seen a lot of build ups that only have two and because the two will be thick pieces of coosa I would say it is good. Also when I step around in the boat I don't notice any real flex, I'm 220lbs so I imagine the hull has enough fiberglass.
I could be completely wrong, any thoughts, comments, questions, concerns will be great!
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