The 3.5-liter V6 CY-DE or Mazda MZI engine was assembled at the US plant from 2006 to 2007 and installed in the full-size CX-9 crossover, but only in its first year of production. This motor belongs to a huge series of Ford Cyclone Engine gasoline power units.
Specifications
| Production years | 2006-2007 |
| Displacement, cc | 3496 |
| Fuel system | distributed injection |
| Power output, hp | 263 |
| Torque output, Nm | 338 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 92.5 |
| Piston stroke, mm | 86.7 |
| Compression ratio | 10.8 |
| Features | DOHC |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | iVCT |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.2 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Mazda CX-9 2007) — city — highway — combined |
18.4 9.9 13.0 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 180 |
The engine was installed on:
- Mazda CX-9 I (TB) in 2006 – 2007.
Disadvantages of the Mazda CY-DE engine
- The main problem with all Cyclone engines is the short-lived water pump.
- Even on short runs, it can leak and then the antifreeze will get into the lubricant.
- Also, the pump is rotated by the timing chain and its wedge usually leads to expensive repairs.
- Otherwise, this is a completely reliable power unit with a resource of more than 300,000 km.
- However, it does not tolerate bad fuel: lambda probes and a catalyst burn from it.
Frequently asked questions about the Mazda CY-DE
How much power does the Mazda CY-DE make?
The Mazda CY-DE develops 263 hp and 338 Nm of torque.
How much oil does the Mazda CY-DE take and which one?
Engine oil capacity: 5.2 liters. Recommended oil: 5W-30.
Does the Mazda CY-DE have a timing belt or chain?
The Mazda CY-DE uses a timing chain.
Is the Mazda CY-DE turbocharged?
No, the Mazda CY-DE is naturally aspirated.
Does the Mazda CY-DE need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
How long does the Mazda CY-DE last?
The typical lifespan of the Mazda CY-DE is ~300 000 km with proper maintenance.
What is the fuel consumption of the Mazda CY-DE?
Mazda CX-9 2007: city 18.4, highway 9.9, combined 13.0 L/100 km.
What cars was the Mazda CY-DE installed on?
Mazda CX-9 I (TB) in 2006 - 2007.
What are the common problems of the Mazda CY-DE?
The main problem with all Cyclone engines is the short-lived water pump. Even on short runs, it can leak and then the antifreeze will get into the lubricant. All known problems.
