So-called "hot vee" engines are becoming more common in modern cars, but what does that even mean, and why does it matter? In short, it's a way of rearranging the location of critical engine components in a turbocharged engine to improve packaging and efficiency.

What Makes A V Engine Hot Or Cold?

The hot in "hot vee" refers to the exhaust system and where it's located. The cold side is the intake. Internal-combustion engine design has long experimented with the exact locations of the intake and exhaust ports, but today you'll find them on opposite sides of the engine. Air and fuel are drawn into the cold side, are combusted, and exhaust is pushed out the hot side. Think of a single cylinder, and it's easy to picture the two sides.

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