1. Some members were not receiving emails sent from XJbikes.com. For example: "Forgot your password?" function to reset your password would not send email to some members. I believe this has been resolved now. Please use "Contact Us" form (see page footer link) if you still have email issues. SnoSheriff

    Hello Guest. You have limited privileges and you can't "SEARCH" the forums. Please "Log In" or "Sign Up" for additional functionality. Click HERE to proceed.

exhaust temp?

Discussion in 'XJ Technical Chat' started by black81xj650, Oct 26, 2014.

  1. black81xj650

    black81xj650 New Member

    Messages:
    8
    Likes Received:
    1
    Trophy Points:
    3
    Location:
    hamilton, ontario
    Just curious if anyone would know the approximate correct temp at the header closest to the engine? I switched over engines to my spare, and noticed that the temps are not even. The middle two cylinders are running hotter. Wondering also what the proper jetting would be for my 81 jx650 maxim with 4 into 1 exhaust and pods on the carbs? I thought i seen some where that the inner two need to be jetted richer?
     
    black81xj650, Oct 26, 2014
    #1
  2. Polock

    Polock Well-Known Member

    Messages:
    9,751
    Likes Received:
    2,097
    Trophy Points:
    113
    Location:
    Beaver Falls, PA
    there's too many variables to use exhaust temp for tuning. how long was it run, outside temp, dual wall pipes.....
    it's best just to read the plugs
     
    Polock, Oct 26, 2014
    #2
  3. black81xj650

    black81xj650 New Member

    Messages:
    8
    Likes Received:
    1
    Trophy Points:
    3
    Location:
    hamilton, ontario
    Ya I guess that is not a good measure of how it is running, I guess i was more concerned that I don't overheat it and cook it!
     
    black81xj650, Oct 26, 2014
    #3
  4. Polock

    Polock Well-Known Member

    Messages:
    9,751
    Likes Received:
    2,097
    Trophy Points:
    113
    Location:
    Beaver Falls, PA
    how's it run?
    if your cruising along and back off the throttle and it seems to speed up before it slows down, that would indicate lean
     
    Polock, Oct 26, 2014
    #4
  5. black81xj650

    black81xj650 New Member

    Messages:
    8
    Likes Received:
    1
    Trophy Points:
    3
    Location:
    hamilton, ontario
    Actually runs decent but I really haven't had much time on it yet as I just got it in today. Think I will re sync it and set everything again. Might help as this engine probably hasn't run in 10 years! Just guessing! As i bought the whole thing for around 100 bucks and it sitting outside it might have needed a bit to loosen up.
     
    black81xj650, Oct 26, 2014
    #5
  6. TIMEtoRIDE

    TIMEtoRIDE Active Member

    Messages:
    4,686
    Likes Received:
    11
    Trophy Points:
    38
    Location:
    Clermont FL near Orlando
    Start at the beginning - valve lash adjust, correct oil, sync & tune, read plugs . . .
     
    TIMEtoRIDE, Oct 28, 2014
    #6

Share This Page