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      02-14-2012, 05:27 AM   #83
John_01
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Drives: E90 325i, E82 135i
Join Date: Mar 2009
Location: Sydney, Australia

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I already owned a car with a 90 degree V6 using balance shafts. The engine originated from an ancient Buick design, but made in Australia in 2002. That was a very rough engine. It made all sorts of noises as it struggled to reach its 5500rpm red line. The early versions of this 90 degree V6 design didn't even have a balance shaft. Idle was unbelievably rough. In those old cars it seemed like the engine was trying to escape its mounting.

Of course the engine was designed that way because it had evolved as a 6 cylinder version of a V8. Very interesting if BMW intends to follow the same approach. I would expect they won't do that. The Japanese know what they are doing when making all their V6 engines at 60 degrees. These days I choose BMW because the inline 6 cylinder engines are the smoothest free-revving engines in the world.

Last edited by John_01; 02-14-2012 at 05:32 AM..
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