"Loping Camshaft" (Loping_Camshaft)
04/30/2016 at 15:17 • Filed to: None
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"Loping Camshaft" (Loping_Camshaft)
04/30/2016 at 15:17 • Filed to: None | 2
| 5 |
Earlier today, evo put up a cool video of a cool car, the 365 GT4 BB.
As the video played, I noticed that most of the facts recited were just taken from the !!!error: Indecipherable SUB-paragraph formatting!!! . That’s fine, but it just comes off as a little lazy I guess. It’s a car I don’t know that much about, so I looked around a little.
One thing that caught my ear though was that the Berlinetta Boxer actually does not have a boxer engine, but it is a flat-12 or to be very specific, a 180° V12 (which hurt my brain a little).
I was always under the impression that the terms “horizontally opposed”, “boxer”, and “flat” were perfectly interchangeable, but they are not always. And also, the term “180° V12" makes perfect sense.
A boxer engine is always a flat engine, but a flat engine is not always a boxer engine.
The difference is the way the pistons are connected to the crank. For those that are interested, further explanation here:
!!! UNKNOWN CONTENT TYPE !!!
Also interesting about the BB series is that they didn’t get notably more powerful over the course of the 11-year run. They gained fuel injection and got much heavier, but lost top speed and redline.
Turbineguy: Nom de Zoom
> Loping Camshaft
04/30/2016 at 15:28 |
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A boxer means a flat-plane crank, right?
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Loping Camshaft
> Turbineguy: Nom de Zoom
04/30/2016 at 15:45 |
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I don’t think so. They can be, but they don’t have to be by definition. Separate issues.
But this is starting to reach the limits of my understanding of terminology.
McMike
> Loping Camshaft
04/30/2016 at 16:56 |
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I save this on my desktop for all Ferrari Boxer discussions.
Top is boxer, bottom is V
Boxers are 2, 4, and 6 cylinder engines, 12 is a V (like you said)
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McMike
> Turbineguy: Nom de Zoom
04/30/2016 at 17:04 |
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A boxer means a flat-plane crank, right?
Not always.
Boxer 2 - just one set of crankpins offset by 180 deg. Flatplane.
Boxer 4 - two sets of crankpins, but they are on the same plane, 180 deg opposite the first pair. Still flatplane.
Boxer 6 - the third set is put in the middle, and offset 90 degrees from the other two. Not flatplane.
Flat 12 - not flatplane. Not boxer.
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Loping Camshaft
> McMike
04/30/2016 at 20:03 |
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I would get too aroused if I kept that on my desktop all the time. Kudos to your willpower.