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V-Blocks are precision metalworking jigs typically used to hold round metal rods or pipes for performing drilling or milling operations. They consist of a rectangular steel or cast iron block with a 120 degree channel rotated 45-degrees from the sides, forming a V-shaped channel in the top. A small groove is cut in the bottom of the "V".
Several modern 90 degree V6 engines reduce the vibrations using split crankpins offset by 30 degrees between piston pairs, which creates an even firing interval of 120 degrees for all cylinders. [4] For example, the 1977 Buick 231 "even-fire" V6 engine was an upgraded version of the Buick Fireball engine with a split-pin crankshaft to reduce ...
Some engines have used a V-angle of 180 degrees (the same angle as a flat engine), such as several Ferrari V12 engines. [7] [8] At the other end of the scale, the 1922-1976 Lancia V4 engine and the 1991–present Volkswagen VR6 engine use V-angles as small as 10 degrees, along with a single cylinder head used by both banks of cylinders.
However, the downside is the greater width of the engine compared to those that use a smaller V-angle. V8 engines with a 60-degree V-angle were used in the 1996–1999 Ford Taurus SHO, the 2005–2011 Volvo XC90, and the 2006–2009 Volvo S80. The Ford engine used a 60-degree V-angle because it was based on a V6 engine with a
McLaren's 577-hp M640 V-6 will go in the Artura, while Ferrari's new 654-hp F163 engine will be in the 296GTB. Why Ferrari and McLaren Debuted 120-Degree V-6s at the Same Time Skip to main content
The all-aluminum engine has a bank angle of 120 degrees, a world first for a production V6 engine. This is to accommodate a hot-vee layout, where the two turbochargers are placed in the vee of the engine. Power is sent to the rear wheels through an all-new 8 speed dual-clutch transmission. The redline is set at 8,500 rpm. [8] [10]
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Compared with V-twin engines and flat-twin engines, straight-twins are more compact, a simpler design and cheaper to produce. [6] Straight-twin engines can be prone to vibration, either because of the irregular firing interval present in 180° crank engines or the large uncountered reciprocating mass in 360° crank engines.