I just replaced a Volvo
MD40A in my Contest 48 (40,000 pounds displacement
& a 37-foot waterline) with a Beta Marine
90. It's a Kubota 230 cubic inch (3,769cc), 4 cylinder, naturally-aspirated engine that develops 295 foot-pounds of torque at 1,500 RPM
. I don't, however, believe that it produces 90 horsepower as Beta Marine
claims - the Kubota service
manual says it's rated at 80 horsepower at 2,600 RPM
and I can't imagine that Beta Marine
does anything to it to increase the hp. Regardless, so far I'm delighted with the package: It's quiet, smooth and comes in a surprisingly small footprint. I ordered the optional 100-amp alternator
AND the optional 175-amp alternator
, both made by Iskra. Mine came with the ZF45 transmission. Beta Marine
also offers a 75-horsepower engine, of which I know nothing about.
I did the installation
myself except for the assistance I got with the modifications to the engine stringers and aligning the engine. Phillip Jones, aka the Marine Man, sold me the engine and provided the assistance. He is very knowledgeable, pays close attention to detail and is an excellent craftsman. I felt his pricing was fair.
Of course, time will tell how reliable and economical the engine will be. Kubota has earned an excellent reputation in the agricultural and construction equipment
industry where hard use and less-than-ideal conditions are the norm.
Fair winds and calm seas.