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Thread: Did You know this 'Can' happen to a diesel (Death by oil)

  1. 16th March 2012, 10:04 AM #261
    Bush65
    Bush65 is offline YarnMaster
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    Simply to provide additional info to pat's reply:

    The deck of the engine block is the top surface to which the head is bolted.

    Decked ... refers to the process of restoring the deck flatness.
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  2. 16th March 2012, 07:14 PM #262
    uninformed
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    some better pictures of the melted piston #2:
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  3. 16th March 2012, 07:18 PM #263
    Dougal
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    A bit of sand-paper, it'll clean up okay.
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  4. 16th March 2012, 07:18 PM #264
    uninformed
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    a couple more of #2:
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  5. 16th March 2012, 07:54 PM #265
    slug_burner
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    I am sure that the factory engine will not have all that matching of components done. It should purr

    With the photos, can anyone comment on what they see? I don't see much other than the discoloured crown and a little deformation around the top edge of the piston that looks like someone tried to lever it out with a screw driver!

    Is the anything wrong with the small end/gudgeon pin?
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  6. 16th March 2012, 08:20 PM #266
    uninformed
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    Quote Originally Posted by Dougal View Post
    A bit of sand-paper, it'll clean up okay.
    yeah about as much as my bad attitude will just "buff out" hahahahahaha
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  7. 16th March 2012, 08:23 PM #267
    uninformed
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    Slug, that piston is well fubar'd. The top should be smooth, the combustion chamber as well. The bulb in the camber is reduced in height/size due to melting. The top outside edge of the piston should be square and nice and chrisp. it is actually now a raised edege right around it with some of the corner missing. The top of the piston got so hot the material let go and transfered onto the head.....all in all a very bad piston
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  8. 16th March 2012, 10:30 PM #268
    slug_burner
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    Quote Originally Posted by uninformed View Post
    Slug, that piston is well fubar'd. The top should be smooth, the combustion chamber as well. The bulb in the camber is reduced in height/size due to melting. The top outside edge of the piston should be square and nice and chrisp. it is actually now a raised edege right around it with some of the corner missing. The top of the piston got so hot the material let go and transfered onto the head.....all in all a very bad piston
    yes, metal+heat(lots of)=melted metal=bad

    gudgeon pin?

    broken rings?

    all = rebuilt motor
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  9. 17th March 2012, 06:35 AM #269
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    Blknight.aus
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    Quote Originally Posted by uninformed View Post
    yeah about as much as my bad attitude will just "buff out" hahahahahaha
    As I understand it buffing wont help your problem it'll just make you more of a ******...

    I happen to have a very large percussive persuader Im happy to come round and see if some concussive counseling and impact influence will sort it.




    (just to keep it relevent to the thread)

    you might want to have a look at the input shaft of the gearbox while the engines out.
    Dave

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  10. 17th March 2012, 09:30 AM #270
    uninformed
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    Quote Originally Posted by slug_burner View Post
    yes, metal+heat(lots of)=melted metal=bad

    gudgeon pin?

    broken rings?

    all = rebuilt motor
    yes the gudeon pin will not move back and forth freely now. The middle ring is seized into the piston for approx 1/4-1/3 of its dia.
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