HERE IS RON WONDERING HOW HE IS GOING TO GET THESE OLD, WIDE ENGINES OUT THAT 30" DOORWAY
WE AT UNLIMITED YACHT SERVICES INC. ARE VERY PROUD TO HAVE REPOWERED THIS CLASSIC 1981 50' HATTERAS CONVERT.  THIS IS THE VERY FIRST REPOWER PROJECT TO GET THE NEW CUMMINS QSM-11 715-725HP.ENGINES WITH THE LATEST SMARTCRAFT 2.2 / DTS SYSTEMS 
WITH A LITTLE WORK THE OLD DETROIT 8V-92s SQEEZE OUT THE DOOR WITHOUT A SCRATCH
USING A ENGINE JIG. WE DETERMINE WHAT NEEDS TO BE DONE WITH THE STRINGER ASSEMBLIES FOR THE CUMMINS TO FIT.--------->
THIS REPOWER IS FEATURED IN THE NOV-DEC 2009 ISSUE
REWELD THE STRINGER ASSEMBLIES TO FIT THE CUMMINS QSM-11 FOOT PRINT
IN WITH THE NEW QSM-11s ---->
GEE THERE IS ALOT MORE ROOM IN HERE WITH THIS NEW TECHNOLOGY AND 0VER A TON LESS ENGINE WEIGHT
THERE IS ABSOLUTELY 100% LESS CLUTTER WITH THE NEW ENGINES AND MUCH EASIER TO MOVE AROUND AND SERVICE
THIS INSTALLATION REQUIRED MODIFYING THE STANDARD EXHAUST ELBOWS INTO RISERS
REPLACED ALL COPPER FUEL LINES WITH USCG1-A FUEL HOSE
WE REPLACED ALL THE 2X4 WOOD FLOOR CRUTCHES  WITH STAINLESS STEEL ADJUSTABLE SUPPORT FOR SALON FLOOR UPGRADE
HATTERAS YACHTS NEVER OFFERED ENOUGH AIR TO ENGINES SO WE INSTALLED THESE SHARK GILL VENTS WHICH ADDED  400 SQ. INCHES. NOW AFTER A HARD RUN THE ENGINE ROOM TEMPURATURE IS ONLY 18 DEGREES MORE THAN OUTSIDE AMBIENT AIR TEMPURATURE AND KEEPS THE SALON COOLER AS WELL.
BEFORE
AFTER
WE GLASSED OVER ALL THE HOLES  LEFT FROM THE OLD ANALOG GAUGES AND PAINTED THE CONSOLE, MADE NEW SWITCH PANELS, AND INSTALLED THE NEW SMARTCRAFT 2.2 VESSEL VIEW DISPLAYS
WITH HER NEW POWER AND FULL TANKS (1078 GAL.)  WE ARE GETTING 20+KNOT CRUISE AT 2000 RPM. AND BURNING 20 GALLONS AN HOUR PER ENGINE. THAT IS  2 GALLONS A NAUTICAL MILE       WOT IS 27 KNOTS AND ONLY 86+% LOAD
THIS REPOWER IS ALSO FEATURED IN AN ARTICLE THAT CAN BE VIEWED AT BOATDIESEL.COM