| Manufacturer | Ford Motor Company |
|---|---|
| Also called | Duratec 35 Duratec 37 Mazda MZI EcoBoost |
| Production | 2006–present |
| Predecessor | Ford Mondeo V6 |
| Displacement | 213 CID (3496 cc) 227 CID (3721 cc) |
| Cylinder bore | 3.64 in (92.5 mm) 3.76 in (95.5 mm) |
| Piston stroke | 3.41 in (86.7 mm) |
| Cylinder block alloy | Aluminum |
| Cylinder head alloy | Aluminum |
| Valvetrain | DOHC with Direct Acting Mechanical Buckets |
The Cyclone engine is Ford Motor Company's latest DOHC V6 family of gasoline 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 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,[1] DOHC 4-valve per cylinder heads, 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 Duratec 35 is ULEV-II compliant and is capable of meeting the PZEV requirement.
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The Duratec 35 displaces 3.5 L (3496 cc, 213 CID) with a 92.5 mm (3.64 in) bore and 86.7 mm (3.41 in) stroke. Due to packaging differences (primarily the relocation of the water pump to the valley), the 3.5 L engine will fit into any engine bay the smaller Mondeo 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. Ford expects the engine to be available in 20% of its vehicles by the end of the decade.
Official SAE certified engine output is 265 hp (198 kW) and 250 lb·ft (339 N·m) 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.[2] For 2011, the 3.5 L received Ti-VCT, helping to boost output to 285 hp (213 kW) and 253 lb·ft (343 N·m).[3] The Duratec 35's highest output to date is 290 bhp. This version is used in the redesigned Ford Explorer.
The engine is assembled at Lima Engine in Lima, Ohio, with expansion planned in Cleveland Engine Plant #1.
The Duratec 35 was on the Ward's 10 Best Engines list for 2007.
The Duratec 37 is a 3.7 L (3721 cc/227 CID) version of the Cyclone V6 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).
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 Duratec 37 saw production in the 2009 Lincoln MKS.
A few days before the 2009 Los Angeles International Auto Show, Ford unveiled a new version of the Duratec 37 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. This version of the 3.7 L features Twin Independent Variable Cam Timing (Ti-VCT); delivers 31 mpg-US (7.6 L/100 km; 37 mpg-imp) highway mileage in the Mustang, and was the first production engine to deliver in excess of 300 hp (224 kW) and 30 MPG.[4]
It is a twin turbocharged, gasoline direct injected (GTDI) version of the Duratec 35.
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