why do manufactures charge premium for engines with more CC?

androdev · 31st January 2009, 21:13

Why such a premium attached to almost identical engines with just few more CC? Am I wrong in assuming that 150CC engine is not that expensive or different compared to 125CC. Just drill a few cm deeper hole in the cylinder ;-)

Similarly 1.9L vs 2.0L in a 4 cylinder engine?

ImmortalZ · 31st January 2009, 21:41

Don't we all wish engine design was that easy?

Here's an inverse situation. An Accord's 2.4L engine, the K24A series, is a much simpler beast when compared to the CTR's 2.0L K20A. The bigger engine makes nearly 70BHP less.

The reason of course, is that the K20A revs to the moon and has one of the most complicated designs ever giving an extremely high BHP/L ratio. Which makes it twice as expensive as a K24 in the engine swap market. Of course, slap on a K20 head onto a K24 block and you suddenly have the best of both worlds (almost).

Engine designs today are not just about cubic capacity. It's about the complicated variable length intake runners, dual camshafts with infinitely variable angles, variable valve lifts - the constellation of technologies that collectively come under the VTEC/VVTi/VANOS umbrella... the list goes on and on and on. These days, it's the head, not the block that differentiates engines more.

Accent's 1.5L vs. the Verna's 1.5L? Octavia 1.9TDI compared to the A4 2.0TDI?

Of course, the whole Bajaj Pulsar lineup is made up of a single engine (save the 220, which is different somehow).

31st January 2009, 21:13	#1
androdev Distinguished - BHPian Join Date: May 2007 Location: bangalore Posts: 3,097 Thanked: 22,345 Times	why do manufactures charge premium for engines with more CC? Why such a premium attached to almost identical engines with just few more CC? Am I wrong in assuming that 150CC engine is not that expensive or different compared to 125CC. Just drill a few cm deeper hole in the cylinder ;-) Similarly 1.9L vs 2.0L in a 4 cylinder engine?
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31st January 2009, 21:41	#2
ImmortalZ Senior - BHPian Join Date: Jan 2008 Location: Trivandrum Posts: 2,179 Thanked: 488 Times View My Garage	Don't we all wish engine design was that easy? Here's an inverse situation. An Accord's 2.4L engine, the K24A series, is a much simpler beast when compared to the CTR's 2.0L K20A. The bigger engine makes nearly 70BHP less. The reason of course, is that the K20A revs to the moon and has one of the most complicated designs ever giving an extremely high BHP/L ratio. Which makes it twice as expensive as a K24 in the engine swap market. Of course, slap on a K20 head onto a K24 block and you suddenly have the best of both worlds (almost). Engine designs today are not just about cubic capacity. It's about the complicated variable length intake runners, dual camshafts with infinitely variable angles, variable valve lifts - the constellation of technologies that collectively come under the VTEC/VVTi/VANOS umbrella... the list goes on and on and on. These days, it's the head, not the block that differentiates engines more. Accent's 1.5L vs. the Verna's 1.5L? Octavia 1.9TDI compared to the A4 2.0TDI? Of course, the whole Bajaj Pulsar lineup is made up of a single engine (save the 220, which is different somehow). Last edited by ImmortalZ : 31st January 2009 at 21:49.
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