Have I blown it up? :(

Discussion in 'Technical Help' started by Nelson, Oct 6, 2013.

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  1. Nasty :eek:
     
    #61 Nelson, Oct 7, 2013
  2. that goes without saying.
     
    #62 Phill, Oct 7, 2013
  3. Thanks Mate,

    Looks like main stealer only :frown:

     
    #63 Nelson, Oct 7, 2013
  4. As you know, Mr R was correcting your error in suggesting a rebore. If it goes without saying, why did you suggest it? :biggrin:
     
    #64 Nigelo, Oct 7, 2013
    • Like Like x 2
  5. looks a lot like good old-fashioned detonation and I suspect the condition of the corresponding spark plug could add to the story.
     
    #65 Chris, Oct 7, 2013
  6. Trust me, if it's got a broken compression ring or a cracked / holed piston it will show up on a compression tester... You only need to turn it over a few times on the starter motor to do the test, not actually run the engine. Given that it's a pretty safe bet that the front barrel is going to have to come apart anyway ( from the symptoms you have described ) you may choose to just skip the test and start pulling the motor apart anyway. Hope you get it fixed without too much pain / cost...
     
    #66 JR45, Oct 7, 2013
  7. ask him lol :p
     
    #67 Phill, Oct 7, 2013
  8. Happy to be of help where I can. If you're into mens boobies, Im sure I can set up a sub section just for you :tongue:
     
    #68 mattmccabebrown, Oct 7, 2013
  9. What's wrong with this picture...?

    [​IMG]

    [​IMG]
     
    #69 Nelson, Oct 8, 2013
    • Like Like x 2
  10. wow. nice crack. fnarr fnarr
     
    #70 bootsam, Oct 8, 2013
  11. I'm guessing its only your piston thats doolally then and the cylinder and bottom end are ok.
     
    #71 bootsam, Oct 8, 2013
  12. All looks fine 'cept the piston.
     
    #72 Nelson, Oct 8, 2013
    • Like Like x 1
  13. That should be the best result you could have hoped for under the circumstances, new piston and no other problems.
     
    #73 Birdie, Oct 8, 2013
    • Like Like x 2
  14. Thats good news Nelson. But why did the piston crack? Thats what I would be asking. Manufacturing fault? Detonation? Makes me worry about my 1198.
     
    #74 bootsam, Oct 8, 2013
  15. I've no idea mate... My sparg went last year as well, same engine....I think it's Witchcraft! :eek:
     
    #75 Nelson, Oct 8, 2013
    • Like Like x 1
  16. nasty, expensive?
     
    #76 finm, Oct 8, 2013
  17. New piston then. Better to do both with upgraded ones. Get them balanced. You should google to see if its a common occurrence.
     
    #77 bootsam, Oct 8, 2013
    • Like Like x 1
  18. #78 Mr C, Oct 8, 2013
  19. I'm fitting a low mileage second hand piston +rings, then its gaskets (which are fucking daylight robbery!)
     
    #79 Nelson, Oct 8, 2013
  20. What are the two 'blobs' of metal in the inlet recess? Did your plug tip melt? I hope that's your only damage. Good luck with the repair.
     
    #80 CRYSTALJOHN, Oct 8, 2013
    • Like Like x 1
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