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Thread: BSFC for one horse power per/m

  1. #1
    Willis
    Hello People,
    What is the BSFC for one horse power gal per/m.
    Trying to calculate how much fuel a 1500 gas engine consumes

  2. #2
    Sleek-Jet
    0.5 lbs of fuel per hour per horsepower...

  3. #3
    Sleeper CP
    It all depends on how efficient the engine is: total combo carb,intake,compression ,cam and exhaust. A BSFC of .50 ( 1/2 lbs fuel per hour per HP.) 800 hp engine would need(consume) 400 lbs of fuel in one hour at a BSFC of .50 or 66.67 gallons assuming VP C-12 with a specific gravity of .717.
    But if the same 800 hp engine has a BSFC of .390 the fuel needed would only be 312 lbs or 52 gallons in one hour with VP C-12.
    Assuming a BSFC of .50 is safe any performance engine should be able to achieve that number.
    What is the engine ?
    Sleeper CP
    565" Ford Lover

  4. #4
    Willis
    Auguat 14, 2007
    Hello People,
    Just wanted to let you know that I found the info in detail,
    Use a calculator and plan on .5 lbs/hp-hr. (gasoline). Methanol alcohol requires about 1.0 lbs/hp-hr. Use .7 lbs/hp-hr when planning a gasoline system for nitrous assist.
    EXAMPLE: You have a 650 hp engine. 650hp x .5 = 325 lbs/hr. (gasoline). Although you need to know how much your fuel weighs, assume for this example that it weighs 6.2 lbs/gal. 325 lbs/hr. รท 6.2 = 52.42 gal/hr. Dividing by 60 (minutes per hour) yields .847 gal/min (GPM).
    :idea:

  5. #5
    ghittner
    10 gallons per hour per 100 hp. 150 Gallons per hour. Divide by 60.

  6. #6
    Sleeper CP
    10 gallons per hour per 100 hp. 150 Gallons per hour. Divide by 60.
    That would be a BSFC of .6 I'm not going to say that would be a two stroke but it certainly wouldn't be much of a performance engine or if it were it would be running awfully rich. Maybe a pain ass stocker.
    Sleeper

  7. #7
    steelcomp
    That would be a BSFC of .6 I'm not going to say that would be a two stroke but it certainly wouldn't be much of a performance engine or if it were it would be running awfully rich. Maybe a pain ass stocker.
    SleeperI wouldn't want my motor to run there, but for purposes of figuring a fuel pump, I think it's definately safe.

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