Mercury Marine Racing 1,350 Hp for top marine power

photo marine engine Mercury Marine Racing turbo F I 9 liter gas engine

Photo Mercury Racing 9 liter 1,350 Hp gas super Turbo charged engine

It is a four cam, port fuel injection, turbocharged, 9 liter, 6,500 rpm redlined marine engine that comes with a warranty. Special exhaust tuning and electronics keep turbo lag out of the picture. She gives reduced time-to-plane acceleration and continuing push you back into your seat back punch all the way to a boat’s  top speed.

The engine has a bore of 4.57 inches with a stroke of 4.21 inches for a displacement of 552 cubic inches or 9 liters. The full throttle operating rpm is 6000 to 6500 rpm. It has a sequential fuel injection system.  With the multiple turbo set-up the compression ratio is 7.8 to 1. She meets with EPA and CARB emissions requirements for 50 state boating enjoyments.

This engine is so strong that Merc Racing had to invent new propellers to handle the power. The entire driveline and its dry sump M8 surface style stern drive have also been strengthened.

A M8 surface-piercing stern drive with a Mercury Racing hydraulic transmission handles high torque and power levels with ease for improved handling and exceptional performance

MTI came out with a 48 foot long with a 10’ 6” beam catamaran that matched up perfectly with two of these engines. It was displayed at the most recent Miami Boat Show and wowed the Very High Hi Performance crowd attending that show. Twin gas fueled engines was the popular way to power many of the Go Fast boats this year.

Seabuddy says many thanks to Mercury Marine Racing for these photos.

boat builder MTI 48' Cat boat photo 1350 Hp Mercury Racing engine

48' Cat from MTI with with twin 1,350 Hp gas Mercury Marine engines

One Response to “Mercury Marine Racing 1,350 Hp for top marine power”

  • The original 100-hp Mercury outboard was called the Tower of Power because it was so tall. They ought to revive that nickname for this one, since since that V-12 block is mounted straight up and down, with the open side of the V pointed rearward. Normally, outboard-powered boats steer by pivoting the whole engine and drive as single unit. But with 12 cylinders filling up the cowl, Mercury had to figure out a different approach every inch counts when you’re trying to cram as many outboards as humanly possible on the back of your center console. So instead of pivoting the powerhead and lower unit, the V-12 Verado simply swivels the lower part of its outdrive. It’s going to be disconcerting to see one of these leave the dock, the boat swinging around while the engines point straight ahead.

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