1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Whats The General Rule Of Thumb For Hp?

Discussion in 'Members' Lounge' started by Tonyd0821, Jun 6, 2003.

  1. Tonyd0821

    Tonyd0821 Banned

    Messages:
    5,088
    Likes Received:
    0
    Joined:
    Feb 26, 2003
    what is the general rule of thumb for determining what the horsepower to the wheels is on a honda?

    someone told me subtract 15% from the original hp (crank) figure to come out with a rough estimate of what the
    hp to the wheels would be?

    i.e. suppose a b16 (usdm) is rated 160hp. subtract 15% and you get 136 to the wheels?
    i suck at math so if my math is wrong dont flame.....
     
  2. Domeskilla

    Domeskilla Senior Member

    Messages:
    2,948
    Likes Received:
    0
    Joined:
    Oct 27, 2002
    Location:
    Fort Wayne, IN
    its around 15-20% off the rated HP
     
  3. rsaeini

    rsaeini Senior Member

    Messages:
    1,415
    Likes Received:
    0
    Joined:
    Jan 15, 2003
    Location:
    Los Angeles, CA

    that's just about right. it normally around there. i've seen a stock '99 Si put 140.1hp to the wheels. but then again that was the highest i've seen for a stock USDM B16.
     
  4. B16

    B16 Super Moderator VIP

    Messages:
    11,539
    Likes Received:
    534
    Joined:
    Sep 30, 2002
    Location:
    yay area, CA
    the rule of thumb is you are not allowed to beat your wife with any object that is thicker than the diameter of your thumb :thumbsup:
    :lol:
     
  5. Tonyd0821

    Tonyd0821 Banned

    Messages:
    5,088
    Likes Received:
    0
    Joined:
    Feb 26, 2003
    im pretty sure i could find some old 1/2" conduit lying around :lol: :lol:
     
  6. kyleirwin

    kyleirwin Retired OG

    Messages:
    2,420
    Likes Received:
    2
    Joined:
    Oct 24, 2002
    Location:
    Vegas
    i've always herd 14% drivetrain loss... and it's always seemed pretty accurate.
     
  7. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

    Messages:
    28,465
    Likes Received:
    228
    Joined:
    Sep 30, 2002
    Location:
    Dallas / Fort Worth, TX
    Same here. The numbers that I usually hear are about 14-17%, and those numbers are reflected in dyno charts that I've seen of stock setups. You'll reduce your drivetrain loss when you do things like install lighter flywheels, lighter wheels, lighter pulleys etc....
     
  8. jeffie7

    jeffie7 Wrong Whole! VIP

    Messages:
    12,927
    Likes Received:
    730
    Joined:
    Sep 28, 2002
    Location:
    Maryland
    it depends on the car but most FWD cars have 12-15% loss RWD cars are 15-20% loss and AWD is around 20-25% loss
     
  9. xj0hnx

    xj0hnx I wanna be sedated VIP

    Messages:
    14,172
    Likes Received:
    48
    Joined:
    Nov 10, 2002
    Location:
    C.C.TX.
    Bossman032 put out 144hp and 97.7ftlbs. on a basically stock which is about 11% so 'd say that the 12%-15% sounds good.
     
  10. Tonyd0821

    Tonyd0821 Banned

    Messages:
    5,088
    Likes Received:
    0
    Joined:
    Feb 26, 2003

    sooooo

    would it be worth it for me to invest in a flywheel/pulley set up for a boosted y8 engine?
     
  11. liquid00meth

    liquid00meth Senior Member

    Messages:
    3,201
    Likes Received:
    0
    Joined:
    Nov 26, 2002
    Location:
    Laconia, NH

    flywheel yes. Pulley no, unless balanced.
     
Verification:
Draft saved Draft deleted

Share This Page