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| Repower Articles |
| Building "Miss Rebecca" - A 26' Jack Tar, Designed by Arch Davis |
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I purchased my 6BT5.9 M from Cummins Cal-Pacific in Irvine, California.
Along with the engine came a recommendation for expert assistance in designing
my engine installation - Seaboard Marine in Oxnard, California. Living near
San Diego, 150 miles south of Oxnard, I was sure I could find such expertise
locally. Prior to installing my engine I had to design my boat's mechanical
systems: engine, gear, exhaust, drive shaft, and steering. My search of
the local suppliers found several that would do the job, but none that were
interested in helping me to do the work. With no success locally I decided
to call Seaboard Marine. After talking about my project with Tony Athens,
owner of Seaboard Marine, I knew I'd found the help I needed.
Our first project was the design of my exhaust system.During that first
phone call I learned more about exhaust systems than I could have ever imagined
so I made a trip up to Seaboard.
I arrived at the shop on Saturday at 7:30 AM, blueprints in hand. After
sharing boat-building experiences we got down to business. Using my boat's
plans, Tony designed an exhaust system that considered operational parameters
for backpressure, noise suppression, and preventing seawater backflow. The
heart of the system is a 5" exhaust elbow. Built of 316L stainless,
it includes a high temperature (loss of raw water) alarm. Another feature,
a surge tube for preventing sea water back flow into the engine, was built
by myself using directions and materials supplied by Tony. As construction
progressed I asked Tony for advice on many other projects, including the
boat's fuel system, hydraulic steering, rudder and propeller, and pilothouse
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