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question about hp

Discussion in 'The Garage' started by bigjohnson4.6gt, Apr 3, 2007.

  1. Apr 3, 2007 #1
    bigjohnson4.6gt

    bigjohnson4.6gt Well-Known Member

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    is there a relationship between rwhp and hp at the crank, like if say you have 240hp at the crank could you find out roughly how much rwhp you have or vice versa? just curious
     
  2. Apr 3, 2007 #2
    gt96stang

    gt96stang Well-Known Member

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    i think it's 15% drive train loss for manuals and 18% for autos.. or so is the general ideas..
     
  3. Apr 3, 2007 #3
    94twinscrew

    94twinscrew Active Member

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    yes..... if you have 240flhp with a stick....figure a 15% power loss from parasitic drag.....which roughly translates to 204whp. Stock autos will have a higher percentage of loss.
     
  4. Apr 3, 2007 #4
    bigjohnson4.6gt

    bigjohnson4.6gt Well-Known Member

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    so about 18% loss for autos? thanks guys
     
  5. Apr 3, 2007 #5
    Lightning Struck

    Lightning Struck Legend

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    pretty much, for the most part what I have seen is 20%
     
  6. Apr 3, 2007 #6
    94twinscrew

    94twinscrew Active Member

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    diddo
     
  7. Apr 4, 2007 #7
    4point6GT

    4point6GT Active Member

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    thats alot of loss, that sucks!