Forester XT torque curve

Discussion in 'Subaru Forester' started by TransFixed, Aug 10, 2003.

  1. TransFixed

    TransFixed Guest

    In the middle of April, when there were many questions about the
    performance and power of the Forester XT, I made an educated guess about
    its torque curve. Here is what I wrote then, with Nm quantities
    included now for convenience:

    RPM lb-ft Nm
    1600 ~160 217 [from base 2.5l engine +AVCS +turbo]
    2000 ~190 258 [from base 2.5l engine +AVCS +turbo]
    3600 ~235 319 [official spec]
    4600 ~220 298 [interpolated]
    5600 ~200 271 [official spec, converted from max hp (197, exactly)]
    6000 ~180 244 [interpolated from 2.5l + turbo specs, and max hp
    cond.]
    6400 ~160 217 [interpolated from 2.5l + turbo specs, and max hp
    cond.]


    Now, Subaru of Australia has published the actual torque curve of the XT
    (http://subaru.com.au/downloads/929305.pdf ). You can see that my
    estimate was within a felt-tip pen stroke (a very few percent) of this
    curve. Interestingly, I left out the area between 2000rpm and 3600rpm
    because I could not figure that one out. It turns out that there is a
    slight saddle in the torque curve there – but nothing to be concerned about.

    Other than patting myself on the shoulder here, I want to point out that
    it is quite possible to get a good idea of an engine’s performance from
    a few data points and specs that are available.

    The above .pdf file is also describes other engine features quite nicely.

    - D.
     
    TransFixed, Aug 10, 2003
    #1
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