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did a search, couldn't figure it out, so a quick hp Q

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Old 10-27-02, 12:25 PM
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Red Mist

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did a search, couldn't figure it out, so a quick hp Q
alright, i searched through a bunch of posts, couldn't relaly find anything, but are the stock numbers for fc's referring to wheel hp? or flywheel hp?
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Old 10-27-02, 01:11 PM
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I was just thinking this same question, I just wanted to know the rwhp numbers for stock FCs though... particularly my car, the S5 TII.

Steve
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Old 10-27-02, 01:23 PM
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flywheel wheel hp can be near the 100 mark if it has a lower than normal compression near 115 stock its like a 20-25% loss through the drivetrain
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Old 10-27-02, 02:04 PM
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20-25% is huge! its more like 15%
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Old 10-27-02, 02:36 PM
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so all the numbers that we have on the spec sheets and stuff are flywheel numbers? and then the dyno-charts are rwhp?
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Old 10-27-02, 04:15 PM
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Manufacturers will always quote flywheel HP, simply because it's more.

REAL entusiasts quote wheel HP.

(and that's 139.7 for me, thank you very much).
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Old 10-27-02, 05:05 PM
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17% is the actual drivetrain loss, I believe. Yes, the numbers for our cars are flywheel hp, but dyno runs tell us rear wheel hp.
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Old 10-28-02, 12:19 PM
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cool, thanks... can't wait to get dyno'd after i put my header back on
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