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The K24 I-V TECH in the Honda Element makes less power then the K24s in other Honda's. IE Accord, CR-V, and so on. It also produces less HP then the smaller displacement K20s like in the Civic SI, why is that?
 

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Well I am no expert but I believe the engine has not changed much since the introduction of the E. All of the others you mentioned have been revised since. The new CRV has a higher compression ratio that contributes largely to its higher hp rating...but it doesn't arive until a 1000 rpm higher.
 

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2007 the element gained 6 hp. upping it to 166hp and the 5spd auto option and also max tq of 161 dropped from 4500 rpm to 4000


2009-2010 Acura TSX
Displacement: 2,354 cc (143.6 cu in)
Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
Compression: 11.0:1
Power: 201 @ 7000 rpm
Torque: 172 ft·lbf (MT), 170 ft·lbf (AT) @ 4300 rpm
Redline: 7100 rpm


2010 Honda CR-V (all trim models)
Displacement: 2,354 cc (143.6 cu in)
Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
Compression: 10.5:1
Power: 180 HP @ 6800 RPM
Torque: 161 lbs·ft @ 4400 RPM

2007-2010 Honda Element
Displacement: 2,354 cc (143.6 cu in)
Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
Compression: 9.7:1
Power: 166 hp @ 5800 rpm
Torque: 161 lb·ft (218 N·m) @ 4000 rpm
Redline: 6800 rpm


now i can see one difference at a glance that would directly effect power in an NA car. now im sure theres cam diffrences and various other changes. factory tune etc but the element has the lowest compression (i would say a more low range cam also)

2006-2010 Honda Civic Si (FG2 - Coupe & FA5 - Sedan), 2007 Acura CSX Type-S
Displacement : 1,998 cc (121.9 cu in)
Compression : 11:1
Power: 197 bhp (147 kW) @ 7800 rpm (sae NET Rev 8/04)
Torque: 140 ft·lbf (189 N·m) @ 6200 rpm (sae NET Rev 8/04)
Redline: 8000 rpm
Fuel Cutoff: 8300 rpm
i-VTEC Engagement Window:5800 rpm

k20 has more power listed but lacks torque(if i remember correctly k20 has vtec for both cams) i had a 2003 civic si. and i had to take a rsx type S engine components to get full vtec and raise the redline.
 

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VTEC, not VTECH

John

The K24 I-V TECH in the Honda Element makes less power then the K24s in other Honda's. IE Accord, CR-V, and so on. It also produces less HP then the smaller displacement K20s like in the Civic SI, why is that?
 

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just something i found funny.

K24a2
2004-2005 Acura TSX, JDM CL9 Accord Type-S, RB1 Odyssey Absolute
Displacement: 2,354 cc (143.6 cu in)
Power: 200 PS (150 kW; 200 hp) @ 6800 rpm
Torque: 232 N·m (171 lb·ft) @ 4500 rpm (166 lbft @ 4500 rpm U.S.)
Bore: 87 mm
Stroke: 99 mm
Compression: 10.5:1
Redline:
Automatic 7100 rpm
Sequential Sportshift 7300 rpm (7100 rpm U.S.)
Manual 7600 rpm (7100 rpm U.S.)

Note: The 2006-2008 K24A2 in the U.S. market Acura TSX has the following improvements[2]
Power: 205 hp @ 7000 rpm
Torque: 164 lbft @ 4500 rpm
Increased intake flow:
Intake valve + 1 mm oversize
Intake cam High lift lobe with 0.9 mm more lift and 12 degrees more duration
Throttle body increased from 60-64mm
Radius on some intake pipes increased from 70-80mm
Increased exhaust flow
Exhaust Head pipe increased frm 60-65mm
Higher flow catalytic converter
Main (single) exhaust pipe increased from 54-57mm
Rear (twin) pipes increased in diameter from 42.5 to 45mm
Block improvements:
Additional air passages in crankcase for reduced pumping losses
Other
Stronger conrods
New crankshaft with more counterbalance weight
Revised pistons with more valve-piston clearance


K24Z3
2009 Acura TSX
Displacement: 2,354 cc (143.6 cu in)
Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
Compression: 11.0:1
Power: 201 @ 7000 rpm
Torque: 172 ft·lbf (MT), 170 ft·lbf (AT) @ 4300 rpm
Redline: 7100 rpm
 

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Nice Job on the research! It proves one thing, that the torque comes in lower in the E. That's what you want for hauling stuff. It also develops it's peak power at lower RPM's. That's what you want for Fuel effectiveness, and lower consumption.

It's just good design.

Dom
 

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horsepower is skewed by where the actual power or WORK (torque) is produced, since HP is calculated by Torque in Lb-Ft x RPM / 5252 = HP. when Peak torque comes on earlier, is has less of a factor to be multiplied by. So in the early honda all motor days when the lugnuts had more torque than the engine they produced a lot of HP b/c they were turning 10k+ rpm. it's all about the application, a huge antique natural gas engine may produce 30hp b/c it turns 200rpm, but its got a 1000lb flywheel and will tear stumps out of the ground b/c of torque.

http://www.howstuffworks.com/question622.htm
 

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The Cr-v is a different level because it has different injectors and a differently mapped system as well as a larger intake and a bunch of other stuff they changed specifically for that car. Can't speak for the Accord, but on my 2002 cr-v, it was rated at 160 hp and 161ft pds of tq at some RPM that I don't remember.
 

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In a vehicle like the Element, TQ , and where it makes it, is much more important for vehicle performance, than just peak HP. Peak HP numbers don't tell you much about any vehicle performance really. You also have to take into account how much the TQ is multiplied (gearing).
 
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