hp figures???

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evotech240sx
Posts: 144
Joined: Wed Oct 15, 2003 11:49 pm
Car: 92 240sx fastback
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hey guys, i need help with my horse figures. most of my boys around here cannot really determine it. i got a ka24de with injen cold air intake, denso spark plugs, nology spark plug wires with the pre ground in them, hotshot headers, 2 1/4 pipings with a manga flow resinator. and thats just it. i think it might be like what 160 or so????


book-ends
Posts: 698
Joined: Sun Dec 29, 2002 8:27 pm
Car: ???? Nissan 240SX coupe S13

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Hello,

I think that sounds a little high; based on what Don at PDM Racing has accomplished. He was running 163.1 HP and 161.4 ft/lbs of torque with pulleys, intake, header, CPU tuning AND new Colt cams.

Prior to the cams it was only 152 HP. Why not just pay for a dyno run? I know, because it's like $100 and that money could be used for something else!!

Here is a link to PDM Racing and the results that I have quoted.

http://www.pdm-racing.com/products/cam_corner.html

evotech240sx
Posts: 144
Joined: Wed Oct 15, 2003 11:49 pm
Car: 92 240sx fastback
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oh ya, i also got an underdrive pully too.

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masticatingcow
Posts: 2338
Joined: Fri Nov 07, 2003 8:39 am
Car: 94 Mazda FD3S

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I'm assuming you're referring to WHP (Wheel HorsePower) when you ask what your car's output is. Remember that the stock KA24DE produced 155 HP at the CRANK. From my somewhat limited knowledge of driveline characteristics, you can plan on losing about 15-20% of your HP in the drivetrain. Therefore, the STOCK KA24DE made anywhere from 125-135 WHP.

Then, if you assume that your intake boosts your power by about 10% (which is a little high, admittedly), and that your exhaust system (from the headers back) does ABOUT the same, then you're looking at something a little closer to 145-155 WHP.

This is all dependant upon the assumption that your engine is as strong as it was when brand new... which is unlikely. Now you're looking at something a little weaker than 155 WHP. Then again, you do have the pulley, which frees up a LITTLE power... like 3-5 HP.

Of course, you never can tell for sure until you get on a dyno and test it. My ballpark figure would be around 145 WHP. Again, I could be wrong, and there are definiately more qualified people on these boards. But when it comes to HP figures, I always try and low-ball my guesses. That way you won't be sorrily disappointed if all your vaunted work turns out less than you'd hoped.

evotech240sx
Posts: 144
Joined: Wed Oct 15, 2003 11:49 pm
Car: 92 240sx fastback
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its okie, it doents have to be the exact figures...... i just wanted to see where i stand at you know. thanks all


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