DAX - broken screw-thread in body engine

Discussion in '2-Stroke Engines' started by greguk, Aug 24, 2007.

  1. greguk

    greguk Member

    Today, in my "lucky day" I check head nuts and 1 from them start to turn without resistance. 3 of nuts didn't move to much and this lucky one had very little resistance and moves out. I don't know even what to think, I don't feel guilty at all. I strip off Engine Cylinder (1st time), remove it and everything is clear... screw-thread is removed and is on stud. Engine is 3 months old now, low mileage, serviced proper, have changed mounting studs on A2 Steel, worked fine with a little "metal sound" (from time to time). I really didn't use to much power and the tubular wrench is not the best.

    What can I say... Please help!!!

    What can I use to repair it?

    Here is idea to use copper pipe (fi8 / fi5) with screw-thread in on M6 and out M8-9 and glue it.

    http://junak.ekoma.pl/article.php?story=20060906132926896 (not in English)

    http://cgi.ebay.co.uk/recoil-thread...ryZ30917QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
    http://cgi.ebay.co.uk/Permatex-Stri...ryZ72203QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

    I could try to glue it by:
    http://cgi.ebay.co.uk/NEW-LOCTITE-S...yZ131625QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
    but this is Heat resistant up to 150°C. only

    THERMOSTEEL HIGH TEMPERTURE METAL REPAIR 4 FLUES KILNS
    http://cgi.ebay.co.uk/THERMOSTEEL-H...yZ122946QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
    http://cgi.ebay.co.uk/THERMOSTEEL-H...ryZ21654QQrdZ1QQssPageNameZWD1VQQcmdZViewItem
    Heat resistant to 1300ºC.

    Better to glue it (THERMOSTEEL HIGH TEMPERTURE) or drill and replace (recoil-thread-repair-kit)?

    That guy which sell recoil-thread-repair-kit have on auction:
    WE'VE ALL HAD THAT MOMENT WHEN THE BOLT STRIPS OUT...WHICH IS NORMALLY FOLLOWED BY A SPATE OF SPANNER THROWING,SWEARING..AND IN EXTREME CASES TEARS ( LOL )
    I really feel like that :(

    Looks like it's M8 x1.00 rod
     

    Attached Files:

    Last edited: Aug 24, 2007

  2. gone_fishin

    gone_fishin Guest

    same thing occurred on an early dax of mine...one stud was vibrating out from below, whenever i re-tightened it was only pulling it out more.

    good luck, & keep us posted.
     
    Last edited by a moderator: Aug 24, 2007
  3. Bertsimon

    Bertsimon Guest

    What did you do about it augidog? Seems one of mine is also stripped but not too bad. All are super tight except for one.
     
  4. gone_fishin

    gone_fishin Guest

    well, i had caught it during the warranty...dax totally hooked me up with a replacement.
     
  5. Bertsimon

    Bertsimon Guest

    Thats awesome. I am just going to take one off my old motor to put it in the one that is stripped
     
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