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Arragonis · 12-19-2010, 09:08 AM

Wouldn't the additional friction and pumping losses of the extra cylinders mean that overall the I-4 would use less fuel and probably not be too far behind in terms of power ?

4 cylinders are the norm in non-North American markets for engines in the 1.3 to 2.5 litre capacities mainly as a compromise between smoothness and capacity. There are/were some exceptions such as the 2.0 i-6 used by BMW for a long time. They didn't have much more torque than their 4-cylinder rivals but did use more fuel and were bulkier and heavier. They were much smoother though.

How about an I-5 as a compromise, as used by Audi ?

12-19-2010, 09:08 AM	#3 (permalink)
Arragonis The PRC. Join Date: Oct 2009 Location: Elsewhere. Posts: 5,304 Thanks: 285 Thanked 536 Times in 384 Posts	Wouldn't the additional friction and pumping losses of the extra cylinders mean that overall the I-4 would use less fuel and probably not be too far behind in terms of power ? 4 cylinders are the norm in non-North American markets for engines in the 1.3 to 2.5 litre capacities mainly as a compromise between smoothness and capacity. There are/were some exceptions such as the 2.0 i-6 used by BMW for a long time. They didn't have much more torque than their 4-cylinder rivals but did use more fuel and were bulkier and heavier. They were much smoother though. How about an I-5 as a compromise, as used by Audi ? __________________ [I]So long and thanks for all the fish.[/I]