Ford 6 Cylinder

The Cyclone engine is Ford Motor Company's latest gasoline powered DOHC 60° V6 family of engines. ^[1] It will gradually replace the Mondeo family of V6 engines over the next several years. The first version, a 3.5 L Duratec 35 V6, appeared in September 2006 in the Lincoln MKZ. Mazda badges its versions of the Cyclone MZI as it did with its versions of the Mondeo V6.

Notable Cyclone features include a capacity for displacements ranging up to 4.0 L, ^[2] centrally-located sparkplugs, pent-roof combustion chambers, direct acting mechanical bucket (DAMB) camshaft tappets, and variable cam timing (VCT) on the intake camshafts. Features such as gasoline direct injection, turbocharging, dual-stage variable length intake manifold and VCT on the exhaust camshafts are planned to be added later and were considerations in the design phase. The Duratec 35 is ULEV-II compliant and is capable of meeting the PZEV requirement.

The Duratec 35 was on the Ward's 10 Best Engines list for 2007.

Duratec 35

Official SAE certified engine output is 265 hp (198 kW) and 250 lb·ft (339 N·m) on 87 octane gas, but will exceed 300 hp (224 kW) once planned features such as gasoline direct injection (GDI), twin independent variable cam timing (TiVCT), and a variable geometry intake manifold are added. 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. ^[3]. The recommended engine oil is 5W-20.

The 3.5 L engine is the same exterior size as the 3.0 L Duratec 30, 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. Ford expects the engine to be available in 20% of its vehicles by the end of the decade. The Duratec 30 continues in production for other vehicles, such as the Ford Fusion and Mercury Milan until the 2009 model year.

The Duratec 35 displaces 3.5 L (3496 cc/213 in³) with a 92.5 mm (3.64 in) bore and 86.7 mm (3.41 in) stroke. The engine is assembled at Lima Engine in Lima, Ohio, with expansion planned in Cleveland Engine Plant #1.

Former Applications:

• 2007 Mazda CX-9 (MZI)

The 3.5 L Duratec 35 installed in a 2007 Lincoln MKZ

Current applications:

• 265 hp (198 kW) at 6250 rpm and 250 lb·ft (339 N·m) at 4500 rpm
  • 2007– Ford Edge
  • 2007– Lincoln MKX
• 263 hp (196 kW) at 6250 rpm and 249 lb·ft (338 N·m) at 4500 rpm
  • 2007– Lincoln MKZ
  • 2008– Ford Taurus
  • 2008– Ford Taurus X
  • 2008– Mercury Sable

Future applications:

• 2009 Ford Fusion
• 2009 Mercury Milan
• 2009 Ford Flex
• 20?? Ford Mustang
• 2010 Ford Falcon (Australia)
• 2010 Ford Territory (Australia)

Duratec 37

The Duratec 37 is a 3.7 L (3721 cc/227 in³) version of the Duratec 35 intended to power heavier or premium vehicles. The Duratec 37's additional displacement comes from an increase in bore diameter to 95.5 mm (3.76 in), stroke remains identical to the Duratec 35s at 86.7 mm (3.41 in).

The Duratec 37 will be the standard engine for the 2009 Lincoln MKS. A Duratec 37 (MZI 3.7) began production in the 2008 Mazda CX-9. The Mazda 3.7 L MZI is assembled in Hiroshima, Japan.

Current applications:

• 273 hp (204 kW) at 6250 rpm and 270 lb·ft (366 N·m) at 4250 rpm
  • 2008– Mazda CX-9 (MZI)

Future applications:

• 2008 Mazda 6 (MZI)
• 2009 Ford F150
• 2009 Lincoln MKS
• 2009 Lincoln MKZ

TwinForce / EcoBoost

A direct-injected, twin-turbocharged version of the all-aluminum Duratec 35 has been developed, producing 430 hp (321 kW) and 400 lb·ft (542 N·m) of torque. The TwinForce 3.5L V6 is intended to deliver the performance (on demand) of a typical large displacement 6.0 L-class V8, with the normal driving (highway) fuel efficiency of a 3.0 L to 4.0 L class V6.^[4][5] The engine is also capable of operating on any mix of E85 ethanol and premium gasoline, and made its debut in the Lincoln MKR concept coupe/sedan, introduced at the 2007 North American International Auto Show.

Gasoline direct injection more precisely manages fuel flow into the cylinders, for more efficient combustion and emissions control, when compared to port injection. Twin-turbocharging forces more air into the engine on demand, allowing additional fuel to be injected and burned, producing more power: 118 hp (88 kW) per liter in the case of the TwinForce. Technologies for the twin turbocharging system were developed in cooperation with Volvo Cars, and the gasoline direct injection system is a joint development between Ford and Bosch based on Bosch DFI systems already in production.

At the 2008 NAIAS, Ford introduced a similar gasoline turbocharged direct injected engine family called EcoBoost, scheduled for production starting in 2009.^[6] The EcoBoost family is expected to be available as four-cylinder I4 and six-cylinder V6 versions. The 2010 Lincoln MKS is scheduled to kick off EcoBoost production, with a 3.5L V6 version estimated at 340 hp, in mid-2009. The Ford Explorer America and Lincoln MKT concept crossover utility vehicles, which debuted in the 2008 NAIAS, show a similar displacement GTDI EcoBoost engine with up to an an estimated 415 hp.^[7] The company eventually plans to equip a half-million cars and trucks annually with turbocharged EcoBoost engines by 2013.