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What's the Red Line, and Max RPM on my 83 XJ900?

Discussion in 'XJ Technical Chat' started by Rage, May 31, 2009.

  1. Rage

    Rage Member

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    I bought the bike with an aftermarket tach, have no idea what red line really is.

    The highest I dare go is around 13,000RPM. She really sounds like she is straining. My Commutes never go higher than 6,000RPM, and fast driving generally stays under 10,000.

    Where is the factory red line?
    What is the factory max?
     
    Rage, May 31, 2009
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  2. dpawl31

    dpawl31 Member

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    OUCH.

    I do believe all XJ's are 9400-9500 ish. I don't know the exact.

    Definately don't think 13k is ok for any XJ though O_O
     
    dpawl31, May 31, 2009
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  3. Rage

    Rage Member

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    Yikes.

    Thanks. I'll keep 'er a little lower from now on.
     
    Rage, May 31, 2009
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  4. dpawl31

    dpawl31 Member

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    Someone else might chime in, but the stock tack on a 650 says
    ~9500.
    [​IMG]

    Sorry, wasn't taking a pic of the tach, so there is glare.
     
    dpawl31, May 31, 2009
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  5. Ltdave

    Ltdave Member

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    i dont know the redline for certain but the stats show 97hp at 9,000 rpm...

    this ebay picture of a gauge pack for sale shows what appears to be 9,502rpm as redline...

    [​IMG]
     
    Ltdave, May 31, 2009
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  6. dpawl31

    dpawl31 Member

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    Looks stock to me as well, but my GOD, did someone try to clean that with an SOS pad?!
     
    dpawl31, May 31, 2009
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  7. albear

    albear Member

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    on my 1985 xj 900 redline is 9500.


    cheers al bear
     
    albear, Jun 1, 2009
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  8. organizedinsanity

    organizedinsanity Member

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    I can almost guarantee you that the tach is not set correctly for a 4cyl engine. Unless the 900 is WAAAAY different than other xj engines it would blow into pieces long before 13k.
     
    organizedinsanity, Jun 1, 2009
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  9. 85MaximXX

    85MaximXX Member

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    Idunno about blow to pieces I have not payed attention and rapped my X well past 10k and it is ok but I don't recommend doing that frequently. The red starts at 9500 on the X as well.
     
    85MaximXX, Jun 2, 2009
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  10. bluepotpie

    bluepotpie Member

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    i agree. mine's been to 10k+
     
    bluepotpie, Jun 2, 2009
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  11. organizedinsanity

    organizedinsanity Member

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    Theres a big difference between 10k and 13k. Do xjs have rev limiters? I am willing to bet that it would cut out around 10k or so
     
    organizedinsanity, Jun 3, 2009
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  12. Rage

    Rage Member

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    I have two threads going at the same time. One is regarding properly setting up my tach. Turns out it was reading x2 as high as actual readings.

    I guess that means that while commuting, I drive at a max of 3000-4000RPM, while driving quick, I top out around 5000-6000RPM, and once or twice while really pushing the bike to my limits as an inexperienced rider I hit 6500RPM.


    My Tach Questions here if you are curious
    http://xjbikes.com/Forums/viewtopic/p=1 ... tml#155749
     
    Rage, Jun 3, 2009
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  13. bluepotpie

    bluepotpie Member

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    don't think there are limiters on xj's. none on mine at least.
     
    bluepotpie, Jun 3, 2009
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