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EnthusiastsMcLaren's Top-Exit Exhaust Has Real Performance Benefits

17:02  22 february  2019
17:02  22 february  2019 Source:   roadandtrack.com

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McLaren ' s Top - Exit Exhaust Has Real Performance Benefits . If you haven't already heard, the McLaren 600LT uses a top-mounted exhaust . In addition to looking cool and sounding great, there are some actual performance benefits to having the exhaust exit at the top rather than the bumper.

The McLaren 600LT features a top mount exhaust , but it' s not just for looks, or to sound good, it' s quite a Weight is actually a real advantage of a top mount exhaust . In the 570 S , the exhaust comes out the back of the car where it passes through a catalytic converter before finally exiting the top

McLaren's Top-Exit Exhaust Has Real Performance Benefits© Beadyeye It's lighter, creates less back-pressure, and doesn't disturb aero. Every mid-engine car should have top-mounted exhaust exits.

If you haven't already heard, the McLaren 600LT uses a top-mounted exhaust. In addition to looking cool and sounding great, there are some actual performance benefits to having the exhaust exit at the top rather than the bumper. Jason Fenske of Engineering Explained breaks down those benefits in his latest video.

In the 570S, the 600LT's more pedestrian sibling, the exhaust exits at either end of the bumper. Because the car is mid-engined, the exhaust has to travel from the engine, over the transaxle, then back down to the bumper to exit. That's a lot of piping. A top-mount exhaust fixes that by simply exiting over the transaxle without having to travel back down to the bumper. Here's a gif showing the difference in how the exhaust air travels:

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That' s why the McLaren 600LT Spider I drove last week was so delightful. It' s not the fastest or most expensive McLaren , but the exhaust goes out the top. In addition to having a few important performance benefits , top - exit exhausts bring the fire and fury closer to your ears. And since it' s a

McLaren ' s top -mount exhaust pipes on the 600LT certainly look cool, but there are actually multiple reasons why the British marque opted for the design. Jason Fenske of Engineering Explained had the opportunity to speak with the 600LT's chief engineer, and he answered numerous questions about the

McLaren's Top-Exit Exhaust Has Real Performance Benefits© Engineering Explained - YouTube McLaren's Top-Exit Exhaust Performance Benefits

This means less piping, which means less weight, less back-pressure, and better cooling. And because there's no exhaust exits at the bumper to disturb air flow, McLaren can incorporate a bigger diffuser to produce more downforce.

Some of you might be thinking: Does the top exit exhaust disturb airflow to that big rear wing? Fenske had the same concern, and asked a McLaren engineer, who explained that most of the wing's downforce actually come from either side of the wing, not the center portion where the exhaust is. The car's body work sends clean, undisturbed air to the wing's sides, while the cabin structure sends dirty air to the wing's center, which isn't as effective. That's why you see cars like the Ferrari FXX K with two winglets on either end rather that one massive piece.

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Top - exit exhausts . Good. Just like the Porsche 918 Spyder, these exhaust tips sit on top of the mid-mounted, as-yet unspecified engine. McLaren only divulges that this new supercar will benefit from “increased power, minimised weight, optimised aerodynamics and enhanced driver engagement”

And a massive aero package, considering that we can already see a rear wing, as well as a huge diffuser.

Check out Fenske's full video below if you want to learn everything there is to know about top-exit exhausts.

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