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HELP! Is having a rev limiter necessary? Digital speedometer install.

Discussion in 'XJ Modifications' started by Shabby cube, Jan 6, 2021.

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  1. Polock

    Polock Well-Known Member

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    i had one like that, it came out like this.
    get a piece of brass rod about 1/4 inch and 1.5 inches long
    strip the carb of anything that will burn/melt
    chunk of plumbers solder with lead, also 1/4 inch long
    solder flux down the hole then the solder then the brass rod
    now HEAT THE CARB AREA till the solder melts, then a little more heat on the brass rod just to be sure
    hold the rod centered till it's solid and unscrew it, mine was still very tight
    i was surprised it worked but the next step was the garbage can, i reused that screw
     
    Polock, Mar 13, 2021
    #101
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  2. k-moe

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

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    One more thing. It might take more than one heat cycle for it to break loose. Be patient.
     
    k-moe, Mar 13, 2021
    #102
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  3. Shabby cube

    Shabby cube Member

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    How does that work? I would expect the solder to break loose from the screw, solder is usually not that strong in my experience... by solder flux you mean the stuff that looks like some fat gel right? ...feel like I would be way over my head with that technique...
     
    Shabby cube, Mar 14, 2021
    #103
  4. Minimutly

    Minimutly Well-Known Member

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    Ooo, now that's a new one - might try that one day. See no reason it shouldn't work.
     
    Minimutly, Mar 14, 2021
    #104
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  5. Minimutly

    Minimutly Well-Known Member

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    If you can melt alumina with a butane torch hats off to you!
     
    Minimutly, Mar 14, 2021
    #105
  6. k-moe

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

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    You're right about the butane. I use my propane torch in the kitchen, because I'm too cheap to own more than one torch...lol.
     
    k-moe, Mar 14, 2021
    #106
  7. Polock

    Polock Well-Known Member

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    don't know how much torque that solder joint could take but once the head is stripped out you can't put any torque on it
    i'm no welder but could you stick a welding rod to a steel screw ?
     
    Polock, Mar 15, 2021
    #107
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  8. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Not on mine......I’ve gone over redline a few times. Those who have been to CNYCC’s have seen it a few times
     
    hogfiddles, Mar 15, 2021
    #108
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  9. Minimutly

    Minimutly Well-Known Member

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    Mixture screws are brass.
     
    Minimutly, Mar 16, 2021
    #109
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  10. k-moe

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

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    Not always, but the OP's sure are.
     
    k-moe, Mar 16, 2021
    #110
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  11. Shabby cube

    Shabby cube Member

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    VICTORY!!!!!!
    (Penetrating oil for 2 days, didn’t need to apply heat, nerve wrecking dremel tool job....)
    EFAC5697-0E1D-4A2D-AC40-9B6F256BBA8C.jpeg

    CFE72D05-0C5A-44D6-8674-E3D4DBE0C654.jpeg
     
    Shabby cube, Mar 16, 2021
    #111
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  12. k-moe

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

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    Once you get the carbs working properly and dial the idle mixture in, you should think about making a rubber cap (from the rubber "clay stuff" arts supply stores carry, Sculpey is one brand) to help protect the slot in the new mixture screw.
     
    k-moe, Mar 16, 2021
    #112
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  13. Polock

    Polock Well-Known Member

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    except the ones that are steel
     
    Polock, Mar 16, 2021
    #113
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  14. Polock

    Polock Well-Known Member

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    that sounds like a job for a 3d printer ;)
     
    Polock, Mar 16, 2021
    #114
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  15. Shabby cube

    Shabby cube Member

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    Yes! Definitely don’t want to have the same problem in future.
     
    Shabby cube, Mar 16, 2021
    #115
  16. k-moe

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

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    Maybe if I ever make time to learn how to do the CAD part. Summer is coming though, and I do have the desire.
     
    k-moe, Mar 16, 2021
    #116
  17. Minimutly

    Minimutly Well-Known Member

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    You live and learn - never seen one myself.
     
    Minimutly, Mar 16, 2021
    #117
  18. Shabby cube

    Shabby cube Member

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    93AE4F1B-B680-454E-8E0B-A7DE4BCCE48E.jpeg E483CFFD-107B-4F53-B4E1-6E822F0AAE8B.jpeg Adjusted mix screws until I got the highest rpm with the least amount of weirdness ( revs up and down fast and doesn’t sputter, no backfires in exhaust).
    I did a carb sync and the bike sounds absolutely amazing!!!
    None of the old strange engine sounds, PLUS, all the headers get hot now! Firing on all cylinders!!!

    TOOLS:
    - 2 inch t-shirt strip with a few knots (one knot per 2-3 inches) drenched in 2-stroke oil to block the YICS port.
    -tubes of equal length filled with 2 -stroke oil as a make-shift carb sync tool. Videos of similar stuff on YouTube.. ( using that is a bitch and a half, had to wait for the oils to set between each adjustment.. or just try to make them all stop moving where they are by adjusting carbs. Took about an hour just doing those adjustments...)
     
    Shabby cube, Mar 18, 2021
    #118
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  19. k-moe

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

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    Next time you can skip blocking off the YICS ports. Use smaller diameter tubing inside each of the tubes going from the engine to the manometer so the pulses are dampened. Makes reading the oil levels easier.
     
    k-moe, Mar 18, 2021
    #119
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  20. Shabby cube

    Shabby cube Member

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    People on here say blocking the YICS is super important, so they got to me. I know it's a debate long as life itsself :p Smaller tubing, great idea.


    NOW.... I got more issues... a little bit of oil sweating from the upper part of my engine... I tried to block it with some metal filler, but it still sweats through when I run the bike... WHAT TO DO?
    image0.jpeg

    image2.jpeg
     
    Shabby cube, Mar 18, 2021
    #120
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