You pull this out of your #7 cylinder...

Discussion in 'LR4' started by mklinker, Feb 10, 2019.

  1. mklinker

    mklinker Active Member

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    See attached... What do you think happened?

    Not my LR4, but a friends RRS with the 5.0SC. Engine is seized, started pulling spark plugs, found this.

    IMG_2220.JPG
     
  2. Jeff Henderson

    Jeff Henderson New Member

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    Timing off? broken valve, hung up valve kept driving
     
  3. avslash

    avslash Full Access Member

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    That looks expensive.
     
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  4. Quijote

    Quijote Full Access Member

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    ^This.
     
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  5. BrandonM7

    BrandonM7 Full Access Member

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    Lean condition with boost cooked a piston apart and banged into shit, or timing came apart letting some valves meet pistons and then lots of stuff banged around. Either way it's a goner when a plug looks like that. Heads and block might be salvageable with machining, but it's likely cheaper to just replace all of it with a used complete engine. Even the supercharger probably got chewed up with debris when the engine started locking up and it sucked chunks back into itself.
     

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