The Cyclone engine, also branded Duratec, is Ford Motor Company's latest DOHC family of gasoline V6 engines introduced in 2006. The Cyclone succeeds Ford's previous V6 engine families, including the Canadian-built Ford Essex engine introduced in 1982, the Ford Vulcan engine introduced in 1985, the original Duratec V6 introduced in 1993, and the Ford Cologne V6 engine, whose design dates back to 1962. The first version of the Cyclone engine, a 3.5 L V6, appeared in the 2007 Ford Edge and the Lincoln-badged luxury variant, the Lincoln MKX, as well as the Lincoln MKZ. Mazda badges its versions of the Cyclone MZI, as it did with its versions of the Duratec V6.

Although Ford continues to use the Duratec name, the Cyclone shares no components or design with the previous Duratec and was entirely new.

Notable Cyclone features include a capacity for displacements ranging up to 4.0 L, DOHC four valves per cylinder, direct-acting mechanical bucket (DAMB) camshaft tappets, variable cam timing (iVCT) on the intake camshafts, and twin-independent variable cam timing (Ti-VCT) on some later versions. Features such as gasoline direct injection and turbocharging were considerations in the design phase and have been added to the engine as part of EcoBoost. The 3.5 L is ULEV-II compliant and is capable of meeting the PZEV requirement.

3.3 L The Duratec 33 is a downsized version of Duratec 35 with both port and direct injection starting in 2018 model year for Ford F-150, serving as the new base engine. Vehicle Horsepower Torque Notes 2018–2023 Ford F-150 at 6,500 rpm at 4,000 rpmNaturally Aspirated 2020–present Ford Police Interceptor Utility at 6,500 rpm at 4,000 rpmNaturally Aspirated 2020–present Ford Explorer Hybrid combined at 6,500 rpm combined at 4,000 rpm and combined

3.5 L The Duratec 35 displaces with a bore and stroke. Due to packaging differences in transverse (FWD) applications, the water pump is relocated to the valley behind the timing cover and is driven by the timing chain. The 3.5 L engine will fit into any engine bay the smaller Duratec 3.0 L will, and replaced it in some applications (notably the Ford Taurus) in the 2008 model year. Production began in 2006 for the Ford Edge, Lincoln MKX, and Lincoln MKZ.

Official SAE certified engine output is and on 87 octane gas. This is a substantial upgrade in power from the Duratec 30 and bested all comparable 87 octane-rated V6 engines at the time of its launch. For 2011, the 3.5 L received Ti-VCT, helping to boost output to and . The 3.5 L's highest output to date is . This version was used in the redesigned 2011 Ford Explorer.

The engine is assembled at Lima Engine in Lima, Ohio, with expansion planned in Cleveland Engine Plant #1.

The 3.5 L was on the Ward's 10 Best Engines list for 2007.

Applications Vehicle Horsepower Torque Cam Phasing 2007–2010 Ford Edge 2007–2010 Lincoln MKX at 6,250 at 4,500 iVCT 2007–2012 Lincoln MKZ 2007 Mazda CX-9 (MZI)

2008–2012 Ford Taurus

2008–2009 Ford Taurus X

2008–2009 Mercury Sable

2010–2012 Ford Fusion Sport at 6,250 at 4,500 iVCT 2009–2012 Ford Flex at 6,250 at 4,500 iVCT 2015–2017 Ford F-150 at 6,500 at 4,000 Ti-VCT 2011–2014 Ford Edge at 6,500 at 4,000 Ti-VCT 2015–2018 Ford Edge at 6,500 at 4,000 Ti-VCT 2013–2019 Ford Flex at 6,500 at 4,000 Ti-VCT 2013–2019 Ford Taurus at 6,500 at 4,000 Ti-VCT2013–2019 Ford Police Interceptor Sedan at 6,500 at 4,000 Ti-VCT 2011–2019 Ford Explorer at 6,500 at 4,000 Ti-VCT

EcoBoost

It is a twin-turbocharged, gasoline direct injected (GTDI) version of the 3.5 L. This engine is used in the 2013-2019 Ford Explorer Sport, 2010-2019 Ford Taurus SHO, 2014-2019 Ford Flex Limited EcoBoost, 2010-2019 Lincoln MKT EcoBoost, and 2010-2016 Lincoln MKS, and is optional for both the 2014-2019 Ford Police Interceptor sedan and Ford Police Interceptor Utility, which are based on the Taurus and Explorer, respectively.

3.7 L The Duratec 37 is a version of the Cyclone V6 intended to power heavier or premium vehicles. The 3.7 L's additional displacement comes from an increase in bore diameter to , stroke remains identical to the 3.5 L at . Ford Power Products sells this engine as the CSG-637 for industrial uses starting in mid-2015, which replaced the 4.2 L Essex and is manufactured under license by Engine Distributors Inc.

A Hiroshima, Japan-assembled Mazda MZI 3.7 was installed in the 2008 Mazda CX-9 and was the first 3.7 L Cyclone V6 to see production. The first Ford application of the 3.7 L was the 2009 Lincoln MKS.

A few days before the 2009 Los Angeles International Auto Show, Ford unveiled a new version of the 3.7 L for the 2011 Mustang, making it the first Duratec-badged V6 since the Lincoln LS to be used in a production rear-wheel drive car. Due to packaging differences in transverse applications, the water pump was relocated to the valley behind the timing cover and is driven by the timing chain. This version of the features twin independent variable cam timing (Ti-VCT), delivers highway mileage in the Mustang, and was the first production engine to deliver in excess of and .

Applications Vehicle Horsepower Torque Cam Phasing 2008–2015 Mazda CX-9 (MZI) at 6,250 at 4,250 iVCT 2009–2013 Mazda 6 (MZI) at 6,250 at 4,250 iVCT 2009–2012 Lincoln MKS at 6,250 at 4,250 iVCT 2010–2012 Lincoln MKT at 6,250 at 4,250 iVCT 2011–2014 Ford F-150 at 6,500 at 4,000 Ti-VCT 2011–2014 Ford Mustang 2011–2015 Lincoln MKX

2011–2014 Ford Edge Sport at 6,500 at 4,250 Ti-VCT2012-2019 Morgan Roadster 3.7 at 6,000 at 4,500 Ti-VCT2013–2016 Lincoln MKZ at 6,500 at 4,000Ti-VCT 2013–2016 Lincoln MKS at 6,500 at 4,000 Ti-VCT 2013–2018 Lincoln MKT at 6,500 at 4,000 Ti-VCT 2013–present Radical RXC V6 at 6,750 at 4,250 Ti-VCT 2012–2015 Ginetta G60 at 6,500 at 4,500 Ti-VCT 2015–2019 Ford Transit at 6000 at 4,000 Ti-VCT 2015–2017 Ford Mustang at 6,500 at 4,000 Ti-VCT 2016 AM General MV-1 at 6,250 at 4,000 Ti-VCT 2016–2018 Lincoln MKX at 6,500 at 4,000 Ti-VCT 2017–2020 Lincoln Continental at 6,500 at 4,000 Ti-VCT 2015–present CSG-637 by Ford Power Products 2013-2019 Ford Police Interceptor Utility at 6,500 at 4,000 Ti-VCT2013–2019 Ford Police Interceptor Sedan at 6,500 at 4,000 Ti-VCT

Water pump issues Water pumps on transversely mounted 3.5 L V6, 3.5 L EcoBoost V6, and 3.7 L V6 engines have a tendency to fail and potentially ruin the engine when they do. The water pumps on these engines are internally mounted and driven by the timing chain. As a result, when they fail, antifreeze is dumped directly into the crankcase, mixing with engine oil and potentially damaging the head gaskets and connecting rod bearings. Many of these water pump failures occur without warning and repairs often cost thousands of dollars, as the engine needs to be disassembled or removed from the vehicle to access the water pump. In some cases, the engine needs to be replaced outright. A class-action lawsuit was started against Ford as a result of this issue, but it was dismissed and no recall was given. All longitudinally mounted versions of the 3.3, 3.5, 3.5 EcoBoost, and 3.7 V6 use an external water pump.

Affected vehicles 2008-09 Mercury Sable 2008-09 Ford Taurus X 2007-18 Ford Edge 2009-19 Ford Flex 2010-12 Ford Fusion Sport 2007-16 Lincoln MKZ 2009-13 Mazda 6 3.7L V6 2007-15 Mazda CX-9 2008-19 Ford Taurus (including SHO) 2017-20 Lincoln Continental 2007-18 Lincoln MKX 2010-19 Lincoln MKT 2011-19 Ford Explorer 2013-19 Ford Police Interceptor Sedan 2013-19 Ford Police Interceptor Utility 2009-16 Lincoln MKS

See also List of Ford engines

References