Turbo Smooth

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Page created by T Aug 16th 2009:

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One reason that a Straight Six is so smooth. When any one Piston has come to a dead halt (3) two others are in free motion.  (1) has ascended 1/3 up its Bore, (2) has descended 2/3  down its bore.
 

Turbo Smooth:

GMH had a marketing strategy called "Turbo Smooth" at one stage which described the 161 and 186 Engines in HR Holdens. In Four Cylinder Engines all 4 Pistons come to a complete stop every 180 degrees of Crankshaft Rotation. 
The same is true for the last 3 Cylinders. When any one Piston has come to a dead halt (4) two others are in free motion.  (5) has ascended 1/3 up its Bore, (6) has descended 2/3  down its bore.

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