Stripped stud

Discussion in '2-Stroke Engines' started by mrsaxman99, Apr 1, 2007.

  1. mrsaxman99

    mrsaxman99 Guest

    So I accidentally stripped the block where one of my head studs is. Is there any way to fix this without buying a new block.

    Surprisingly the engine seems to run fine with just 3/4 head studs in...
     

  2. mrsaxman99

    mrsaxman99 Guest

    update:

    so I found two possible solutions...JB Weld, and using a Helicoil. Can anyone comment on either of these that they have used with any success?

    Thanks
     
  3. azbill

    azbill Active Member

    go the helicoil route jb weld won't hold up to the vibration
     
  4. Guest

    Guest Guest

    Loctite makes a thread repair kit that i've had great success in the past with, I posted a link in a nother thread, but you can just google "loctite thread repair".

    Helicoils are great too.
     
  5. jeffspeeder

    jeffspeeder Guest

    u will have to re tread it then buy a grade 8 bolt and locktite it
     
  6. JFleck

    JFleck Guest

    I would just tap it out to the next bigger size,
    using a helicoil requires a couple of special tools
    unless you have them available, but since
    you even know what a helicoil is I assume
    you have the tools . . . most people don't know . . .

    Every time I try to explain what coleco's are they
    think I'm talking about an old video game system . . .
     
  7. jeffspeeder

    jeffspeeder Guest

    ya just go to the store get a grade 8 bolt and measure the size then tap that size into your bike
     
  8. Guest

    Guest Guest

    Careful- grade 8's snap like pretzels....I'd think a grade 5 would be enough. You don't want to torque it down too tight....27 ft/lbs.

    JFleck- what are "coleco's"? Are you talking about Cleco fasteners for pre postioning sheetmetal before riveting?

    Sorry, long day, my head hurts.
     
  9. jeffspeeder

    jeffspeeder Guest

    no grade 8 is the strongest bolt u can buy grade 1 bolts is what comes with the motor grade 5 is ok just dont torque to tight it might work fine enough
     
  10. Guest

    Guest Guest

    Yes, I know grade 8 are strong, but they are also brittle....we never, EVER use them in the aircraft, because they do snap like pretzels if loaded wrong.

    Not a good choice for wing bolts fo' sho'!
     
  11. jeffspeeder

    jeffspeeder Guest

    what kind would u suggest for the bikes and motors?
     
  12. Guest

    Guest Guest

    Grade 5...it's all we ever use in ultralight aircraft. "aircraft grade bolts are just grade 5 that are more or less inspected for flaws.
     
  13. jeffspeeder

    jeffspeeder Guest

    ok ill keep that in mind thx
     
  14. JFleck

    JFleck Guest

    Yes Clecos for doing sheetmetal work,
    I did a bit of that when I worked in aviation. . .
     
  15. jeffspeeder

    jeffspeeder Guest


    do you hand make your bikes?
     
  16. JFleck

    JFleck Guest

    Well the one in my signature was my first,
    but I did do alot of fabrication to the bike,
    front and rear fenders, the seat mount and
    close out below the seat . . .

    But I am planning on starting bikes from scratch. . .
    basically a stack of tubing. . .

    We'll see . . .

    For more detail pic of my bike look here:
    http://motoredbikes.com/viewtopic.php?t=887
     
  17. jeffspeeder

    jeffspeeder Guest

    so what kinda tools do you ues to fabricate ur bikes?
     
  18. JFleck

    JFleck Guest

    The usual stuff:

    cut off wheel(big help)
    drills
    sanders
    grinder
    rivit gun (pneumatic)
    pop rivit ( not my first choice)
    welding (I had to out source but I am working on getting a welder)
    Imagination
    determination
    ingenuity

    Those last 3 are propably the most important . . .

    Alot of people scratched there heads and laughed when I said
    I was going to make an Indian beach cruizer . . .
     
  19. jeffspeeder

    jeffspeeder Guest

    what kinda bikes did you origialy make the ones u have now out of?
     
  20. sherryc8641

    sherryc8641 Guest

    I Just stripped a stud pulling the bolt way out loosing it!!

    I Just stripped a stud pulling the bolt way out loosing it!!! I think going around 30 MPH (Looking at my speedometer) did the trik of stripping it. It is the one that helps the clamp grab the bike post below the seat. :( So help me. I guess I should screw in a larger bolt that is Grade 5 than the one that came with the dax kit? Would that be the sturdyest replacement? :?
     
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