| Engine | Displacement | Power | Torque | Configuration | Notes | |--------|-------------|-------|--------|---------------|-------| | Renault DF264 | 6.2L | 95 hp | 230 Nm | I6 NA diesel | Simple, durable, understressed. | | Perkins 4.236 | 3.9L | 80 hp | 260 Nm | I4 NA diesel | Smaller, lighter, more common in UK. | | Mercedes OM352 | 5.7L | 120 hp | 360 Nm | I6 NA diesel | More powerful but heavier. | | Ford Dorset 2.5L | 2.5L | 70 hp | 150 Nm | I4 NA diesel | Used in smaller vans (less torque). |
The DF264 occupied a "medium-duty" niche – larger than a 4-cylinder van engine but smaller and less powerful than 7–8L truck diesels.
To understand the DF264, one must understand France in the early 1950s. After WWII, Renault was nationalized under Pierre Lefaucheux. The company was enjoying massive success with the 4CV (launched in 1947), a rear-engined, four-door "people's car" that was putting France back on wheels. However, the 4CV was tiny. Its 760cc engine was economical but utterly unsuitable for the open road or for families who wanted a modicum of comfort.
Renault also had the Frégate (launched 1951), a large, front-engined, rear-drive sedan aimed at the executive class. But the Frégate was a disaster. Plagued by underpowered engines, corrosion issues, and a vague steering system, it failed to compete with the Citroën Traction Avant or the emerging Peugeot 203.
This left a glaring hole in the middle of Renault's lineup. They needed a voiture de gamme moyenne—a mid-range family car. Something bigger than a 4CV but smaller, cheaper, and more reliable than the Frégate. That hole was to be filled by the Projet 264 (the P24, later designated DF264). renault df264
Jean-Luc knew that replacing the EGR valve was expensive, so he decided to investigate the simpler causes first. He knew DF264 is usually an electrical issue, not a mechanical jam.
Step 1: The Visual Inspection He lifted the hood and located the EGR valve near the top of the engine. He looked at the electrical connector—the plastic plug that snaps onto the valve.
Step 2: The Multimeter Test (Optional but Recommended) Jean-Luc unplugged the connector. He used a multimeter to check the resistance of the EGR valve pins. If the valve motor was burnt out, the resistance would be infinite. However, he got a reading within spec (usually around 5-20 Ohms depending on the model), meaning the valve motor itself was fine.
The DF264 utilized the legendary Billancourt engine—the 747cc, 4-cylinder "Ventoux" unit from the 4CV. However, there was a twist: the DF264 was front-engined. Yes, while the 4CV kept its engine in the back, the DF264 repositioned the Ventoux up front, driving the front wheels. This was a bold move in 1955. Front-wheel drive (FWD) was still exotic outside of Citroën. By placing the engine longitudinally (north-south) but driving the front axle via a gearbox mounted ahead of the engine (a "transaxle" layout), Renault achieved excellent weight distribution and a flat floor. | Engine | Displacement | Power | Torque
The aesthetics were handled by Renault’s internal design bureau under Fernand Picard. The DF264 looked exactly like what it was: a scaled-down Frégate. It featured:
Inside, it was shockingly spacious. Because the engine was mounted low and forward, the firewall could be moved ahead, creating interior space that rivaled cars with much larger external footprints. The dashboard was a full-width aluminum panel with Jaeger instruments—simple, elegant, and very 1950s.
Is the Renault DF264 the most powerful engine ever made? No. Is it the quietest? Absolutely not. But is it a testament to a time when tractors were built to last for three generations? Yes.
If you are looking at a vintage Renault project and the DF264 is still turning over, buy it. That engine is not broken; it is just getting started. Step 2: The Multimeter Test (Optional but Recommended)
Do you own a piece of Renault history with a DF264? Drop a comment below telling us how many hours are on your clock!
Happy plowing, everyone.
Killing the DF264 was not a decision based purely on engineering. It was a perfect storm of corporate politics, market shifts, and a single fatal coincidence.
The Renault DF264 is a 6.2-liter, naturally aspirated, inline 6-cylinder diesel engine produced by the French manufacturer Renault. It belongs to the broader "F814" or "Midr" (Moyenne Injection Renault) engine family, which was developed in the late 1970s and early 1980s. The DF264 is best known for its legendary reliability, durability, and use in the iconic Renault Master van (first generation) and various light trucks.
This report covers its technical specifications, design features, applications, performance characteristics, and historical significance.