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power curve

Discussion in 'XJ Technical Chat' started by skeeter, Jun 3, 2010.

  1. skeeter

    skeeter Member

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    hey - i sure seem to remember seeing a graph that shows torque and horsepower vs RPM on this site at one time. i tried "searching" for quite awhile and couldn't find it.

    if anyone would be able to post it here, i'd sure appreciate it.

    thanks in advance.

    oh, i'll take a chart for any XJ, but preferrably an XJ750
     
    skeeter, Jun 3, 2010
    #1
  2. Vedalkin

    Vedalkin Member

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    Vedalkin, Jun 3, 2010
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  3. skeeter

    skeeter Member

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    thanks - but not quite what i'm looking for.

    i'm trying to decide if my "flat spot" between 5k and 6k is normal. i've read quite a few threads that mention a "second power band" at 7k - but was hoping to see a graph that shows this.
     
    skeeter, Jun 3, 2010
    #3
  4. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    The only chart I have is for the 550s; torque has a nearly flat spot between 4K-6K then it jumps up toward a peak at 10K (redline.)
    Meanwhile, HP has a "leveling off" between 4-6K but then rises steeply from 6K to 8K where it tapers off slightly but keeps rising to its peak at 10K.

    There is a definite "second powerband" on the 550 it comes in just over 6K rpm.
     
    bigfitz52, Jun 4, 2010
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  5. skeeter

    skeeter Member

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    thanks, bigfitz, i was hoping to actually "see" something (i'm a charts and graphs kinda guy) but what you described is what i was hoping/expecting to see.

    i'm assuming the 750 curve is simlar to the 550 - 'cept the scale is probly a little different.

    anyhow - maybe someone will find one and it will turn up here.
     
    skeeter, Jun 4, 2010
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