1. 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.

XJ650 carb tuning with the dreaded "pods"

Discussion in 'XJ Modifications' started by willierides, Oct 15, 2007.

  1. Nickembry

    Nickembry New Member

    Messages:
    24
    Likes Received:
    4
    Trophy Points:
    3
    Location:
    Rock island, IL
    The bike was free and didnt run when i got it. Started by cleaning the carbs but took the stock airbox out before i put it back together. The current jets and setting were with stock exhaust but still work with the custom exhaust.
     
  2. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

    Messages:
    19,642
    Likes Received:
    6,740
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    So your baseline for comparison is a non-running bike.

    The most common (seriously, you can search for it) comment from new XJ owners after getting everything clean and set up to factory specs is, "I thought it was running good before. Now I know it what an XJ should run like," or words to that effect. I'm not boasting, not bragging, not trying to be contrary; just pointing out that what you see as "zero problems" probably isn't.
    If you're happy with it as-is then keep on riding and have a good time with her, but she isn't giving you her best.
     
  3. Nickembry

    Nickembry New Member

    Messages:
    24
    Likes Received:
    4
    Trophy Points:
    3
    Location:
    Rock island, IL
    I was just refering to the pods only. I dont know what it ran like before but it runs great now. In my opinion i have had zero problems. Meaning that i tuned it. Its starts right away every time i ride it and it doesnt bog down or sputter or anything like that. The plugs dont foul. The thread was about tuning with pods and i was offering my experience with that. As far as the performance aspect im happy and im not building a drag bike so 1 or 2 hp is not an issue to me
     
  4. Nickembry

    Nickembry New Member

    Messages:
    24
    Likes Received:
    4
    Trophy Points:
    3
    Location:
    Rock island, IL
    Theres a dyno shop right by my house. I might look into getting it in there and get some actual numbers for comparison to the stock specs
     
  5. Eurotas

    Eurotas Member

    Messages:
    194
    Likes Received:
    20
    Trophy Points:
    18
    Location:
    Edmonton
    I'd actually be very interested in this. The dyno don't lie, then we can compare with someone who has a stock air box. I guess for it to be fair, each bike would have to be stock except for the pods. Unless someone has a bike with a factory intake, re-jetted, and is using some kind of aftermarket exhaust(2-1 or 4-1). Everyone says a bike with pods will run lean without increasing your jet sizing, so that's why I'm suggesting that. Right there it might be a unfair advantage because you're giving the engine more air and fuel with a pod setup. Then compare it to a bike that has pods, re-jetted, and a 2-1 or 4-1 exhaust, but there might be some discrepancies based on what type of exhaust is used, and what size main jet is being used. That may change the HP by 1-3hp in my opinion, or it might not at all.
     
  6. Nickembry

    Nickembry New Member

    Messages:
    24
    Likes Received:
    4
    Trophy Points:
    3
    Location:
    Rock island, IL
    I called the shop. They charge 84 dollars an hour to dyno tune and he said 2 or 3 hours. As soon as i get a little extra money im going down there for sure. Ill post all of my bike info after that. The only "performance" upgrades ive done is add the pods, changed the main jet size, and built custom exhaust (cut off the mufflers and welded moto gp pipes on to the stock collector.
     
  7. Nickembry

    Nickembry New Member

    Messages:
    24
    Likes Received:
    4
    Trophy Points:
    3
    Location:
    Rock island, IL
     

    Attached Files:

    Eurotas likes this.
  8. TheCrazyGnat

    TheCrazyGnat Well-Known Member

    Messages:
    684
    Likes Received:
    323
    Trophy Points:
    63
    Location:
    Central PA
    Maybe we should set up a Kickstarter for the Pods vs Airbox Dyno Battle Royale (with cheese). I'd offer up my bike but it's a 750 (and not currently back together yet) so it wouldn't be quite fair.
     
    Eurotas likes this.
  9. Nickembry

    Nickembry New Member

    Messages:
    24
    Likes Received:
    4
    Trophy Points:
    3
    Location:
    Rock island, IL
    Im in lol. Im suprised with this such a one sided debate usually that nobody has any dyno numbers yet to back their claim
     
    Eurotas likes this.
  10. TheCrazyGnat

    TheCrazyGnat Well-Known Member

    Messages:
    684
    Likes Received:
    323
    Trophy Points:
    63
    Location:
    Central PA
  11. Nickembry

    Nickembry New Member

    Messages:
    24
    Likes Received:
    4
    Trophy Points:
    3
    Location:
    Rock island, IL
     
  12. TheCrazyGnat

    TheCrazyGnat Well-Known Member

    Messages:
    684
    Likes Received:
    323
    Trophy Points:
    63
    Location:
    Central PA
    I believe that they measure the factory spec at the crank and not rear wheel.
     
    k-moe likes this.
  13. Eurotas

    Eurotas Member

    Messages:
    194
    Likes Received:
    20
    Trophy Points:
    18
    Location:
    Edmonton
    Um hell yeah! It would be interesting if you wanted to invest a little cash and dyno your bike now, put some pods on it, re-jet, blah blah blah and see what kind of gains you get. I'd do it with mine, but it's not back together yet.
     
  14. Eurotas

    Eurotas Member

    Messages:
    194
    Likes Received:
    20
    Trophy Points:
    18
    Location:
    Edmonton
    How does it sound? Like a crotch rocket lol?
     
  15. Eurotas

    Eurotas Member

    Messages:
    194
    Likes Received:
    20
    Trophy Points:
    18
    Location:
    Edmonton
    So then there's a certain point where too much air becomes a bad thing...so with that being said, restricting your intake to increase velocity would be the way to go, but the question is how much? Would you agree that air flow and intake velocity are on a teader todder?
     
  16. Eurotas

    Eurotas Member

    Messages:
    194
    Likes Received:
    20
    Trophy Points:
    18
    Location:
    Edmonton
    Lol that would be interesting to do, know of any FI systems that could work with this engine?
     
  17. Nickembry

    Nickembry New Member

    Messages:
    24
    Likes Received:
    4
    Trophy Points:
    3
    Location:
    Rock island, IL
    I think it sounds great. I have a short video of it running but i dont think i can post it on here. If you send me an email address ill send it to you
     
  18. TheCrazyGnat

    TheCrazyGnat Well-Known Member

    Messages:
    684
    Likes Received:
    323
    Trophy Points:
    63
    Location:
    Central PA
    You can post videos, but you need to upload them to a hosting site like youtube first, then link using the icon with the two strips of film.
     
  19. Eurotas

    Eurotas Member

    Messages:
    194
    Likes Received:
    20
    Trophy Points:
    18
    Location:
    Edmonton
  20. Polock

    Polock Well-Known Member

    Messages:
    9,751
    Likes Received:
    2,096
    Trophy Points:
    113
    Location:
    Beaver Falls, PA
    i'm pretty sure i'm not thinking what your thinking
     

Share This Page