Need help with ID of what's left of an 18' alum boat.

Joined
Jun 26, 2025
Messages
12
I just found a parts catalogue on Ebay for the Volvo Penta Aquamatic 80 stern drive. It shows a photo of the large round oil cooler that this boat has.
So it's an AQ 80 which was the original model introduced in 1959.
Google AI says,
The Volvo Penta Model 80 engine, a 1.6-liter, 80-hp unit, was first used in a sterndrive prototype developed by Jim Wynne in the spring of 1958. He purchased it from a Volvo car dealership and Volvo Penta was marinizing it.
This engine was then directly bolted onto the sterndrive prototype. Following intensive testing in Gothenburg, Sweden during the autumn of 1958, the first real drive was fitted just before Christmas.
"Note: This engine appears to have been developed and utilized in the late 1950s, specifically around 1958, in connection with the development of the world's first sterndrive, the Aquamatic.
 

garbageguy

Lieutenant Commander
Joined
May 8, 2012
Messages
1,605
That camper looks pretty-cool, and must be a hoot to pilot! Your sketch and plan to resto-mod the boat, then take an ocean voyage in it are inspiring. Your mariner-skills must be top-notch too. Looking forward to seeing/reading about your resto-mod and journey!
 
Joined
Jun 26, 2025
Messages
12
That camper looks pretty-cool, and must be a hoot to pilot! Your sketch and plan to resto-mod the boat, then take an ocean voyage in it are inspiring. Your mariner-skills must be top-notch too. Looking forward to seeing/reading about your resto-mod and journey!
Thanks for that! I've been pondering what to build on top and have discovered the Lone Star Cruisemaster model of 1954-6. Lines like it means business. I intend to build a near copy. I'm looking forward to towing the boat behind the Flyer in our town's 4th of July parade as a pair. That will be a hoot. This boat I got has sat in the Az sun for 30 years. It's a real resurrection. 1751932367241.png
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Joined
Jun 26, 2025
Messages
12
I've cleaned the boat out enough to find there is a heavy steel brace running across the hull about halfway from bow to stern. This brace was put in at the factory and bolts thru the stringers at 4 places. The end pieces are 3/8 by 3" strap bent to fit the hull and a center piece is 1/4" plate welded to connect the ends. This will be a good identifier if someone's seen such a thing before ? P1060284.JPGP1060285.JPG
 

cyclops222

Commander
Joined
Mar 21, 2024
Messages
2,470
A factory steel strap and bits and pieces shown in picture. The company is CRAP !! Also corrosion when there is water wetting those 2 metals. Do not be surprised if your finished boat has a mysterious slow constant leak. At the contact points with softer Aluminum hull sheet metal.
 
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