How many turbos are on a 3.5 EcoBoost?
The 3.5 EcoBoost uses two turbochargers, forming a twin-turbo V6.
In everyday terms, Ford’s 3.5-liter EcoBoost V6 relies on a pair of compact turbochargers to boost air intake and power output. This twin-turbo setup helps deliver strong mid-range torque and high-end horsepower across Ford’s lineup, including trucks like the F-150 and large SUVs such as the Expedition and Navigator. The arrangement is designed to spool quickly and maintain efficiency through modern turbocharging techniques.
Turbocharger configuration
Before listing the key characteristics of the twin-turbo arrangement, here’s what to know about how it’s generally implemented in the 3.5 EcoBoost:
- Two turbochargers (twin-turbo configuration) — typically one unit feeding each bank of the V6.
- Small-diameter turbines designed for rapid spool and reduced turbo lag.
- Intercooling to lower intake air temperature, increasing air density and engine efficiency.
Together, these elements provide a broad and usable power band, along with improved fuel efficiency relative to larger naturally aspirated V6s when driven with restraint.
Variants and notes
Ford has refined the 3.5 EcoBoost over model years. While turbo sizing and calibration have evolved for improved response and reliability, the core layout remains two turbochargers in a twin-turbo configuration across most applications.
Bottom line
Two turbochargers power the 3.5 EcoBoost, arranged as a twin-turbo system that helps deliver strong torque and high RPM horsepower across Ford’s trucks and large SUVs. This setup is a defining characteristic of the engine family.
Summary: The 3.5 EcoBoost employs two turbochargers in a twin-turbo configuration, typically mounted to each bank of the V6, to deliver robust performance with improved efficiency across a broad range of driving conditions.
Does the 3.5 EcoBoost have two turbos?
This is an EcoBoost engine meaning it is boosted. This 3.5 L engine specifically is a V6 with a twin turbo setup is a dual overhead.
What size turbos does the 3.5 EcoBoost have?
The size of turbos on a 3.5L EcoBoost varies depending on the model year, but generally, they are twin-turbochargers with stock compressor inducer/exducer sizes around $40-42$mm and $50-54$mm, with turbine wheels being approximately $45$mm. Newer generations often have larger turbos than older ones.
| Feature | Size (Approximate) |
|---|---|
| Compressor Wheel | Inducer: ~$40-42$mm Exducer: ~$50-54$mm |
| Turbine Wheel | ~$45$mm |
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- 2011-2016 (Gen 1): These models use a smaller turbocharger, with compressor inducer sizes around $40-42$mm and turbine wheels around $45$mm.
- 2017+ (Gen 2): The second-generation engine features larger turbochargers with slightly larger compressor wheels, estimated to be around $40.75$mm in inducer size.
- Aftermarket: Upgraded turbos are available in a variety of sizes, often with larger compressor and turbine wheels to increase power and performance.
How long do 3.5 L EcoBoost turbos last?
The 3.5L EcoBoost turbo life expectancy varies significantly with maintenance, but can last for the life of the engine, often between 150,000 and 200,000 miles or more, with proper care. Key factors include regular oil changes, allowing the turbos to cool down, avoiding hard acceleration when cold, and regular coolant and other fluid changes.
You can watch this video to learn about common issues with the 3.5 EcoBoost engine: 47s8020 AutomotiveYouTube · Sep 22, 2022
Key factors for longevity
- Regular maintenance: Frequent oil changes (every 5,000 miles or sooner) with quality full synthetic oil are critical.
- Cool-down period: Idle the engine for about 15-20 seconds before shutting it off to allow the turbos to cool down and prevent oil coking.
- Driving habits: Avoid aggressive acceleration when the engine is cold, as the cold oil doesn't lubricate as effectively.
- Other fluids: Consistent maintenance of other fluids, like coolant and transmission fluid, also contributes to overall engine health.
Potential issues and maintenance
- Timing chain and phasers: These can require replacement around 150,000 miles. Listen for rattling noises at startup, which can indicate a worn timing chain or tensioners.
- Turbochargers are wear items: Due to high operating speeds and extreme conditions, turbos are considered a wearable component that may need eventual replacement, but good maintenance can extend their life significantly.
- General reliability: With proper care, many owners report their 3.5L EcoBoost engines lasting well over 200,000 miles, sometimes even approaching 300,000 miles or more.
How many turbos are in an EcoBoost?
The 2.7-liter EcoBoost V-6 may be compact, but don't let the displacement fool you—this twin-turbo puncher has earned serious respect. Across countless reviews, it's been praised for nailing the elusive trifecta: strong performance, solid efficiency, and ironclad durability.
