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  1. #1
    steelcomp was here
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    And who still uses the cork pan gaskets. Step up to the one piece silicon.

    Jerry

  4. #3
    OCD, enuf said. OUTLAWMARINE's Avatar
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    It at least has 20 hours left... Use emery cloth
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    Yea, cork on top of silicone. um wow...

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  6. #4
    steelcomp was here
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    Notice anything peculiar besides the trashed bearings?

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    Senior Member wizbang's Avatar
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    System 1 filter ???????????

  8. #6
    steelcomp was here
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    Quote Originally Posted by wizbang View Post
    System 1 filter ???????????
    Ha ha...close. Open bypass port was one thing found, but not the cause. There was no filtered oil going through the engine.

  9. #7
    Senior Member Uncle Dave's Avatar
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    Is the crank worth saving- if so how does it look?

    Did a mega unobtanium crank demolish itself to save the inexpensive bearings?

    Bores dont look trashed.

    Cam looks like it might have worn down a lobe.


    Uncle Dave

  10. #8
    gn7
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    Is it the photos, or are those bearing loose as hell in the saddles?



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  11. #9
    Red Blooded American The Doctor's Avatar
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    Scott, are you saying this thing had ample oil pressure but no filtering caused this damage? Either a long time running the same oil, high horsepower application (which I expect given the camshaft type and profile) or something introduced into the crankcase oil that sped up the process of destruction. Can we assume the rods were as bad or worse?
    Did something finally fail or did he shut it down when the engine noise surpasses the header noise?
    The best things in life aren't things!

  12. #10
    steelcomp was here
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    Quote Originally Posted by gn7 View Post
    Is it the photos, or are those bearing loose as hell in the saddles?
    Ding ding! We have a winner!

  13. #11
    gn7
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    You can tell the cam profile from those pics. Hot damn! I have a couple of cams I need you to check out, that I was going put in a Cam Doctor. No wonder your alias is "The Doctor"



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  14. #12
    steelcomp was here
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    Quote Originally Posted by The Doctor View Post
    Scott, are you saying this thing had ample oil pressure but no filtering caused this damage? Either a long time running the same oil, high horsepower application (which I expect given the camshaft type and profile) or something introduced into the crankcase oil that sped up the process of destruction. Can we assume the rods were as bad or worse?
    Did something finally fail or did he shut it down when the engine noise surpasses the header noise?
    Well since this was brought to me pretty much in this condition, it's all supposition. The crank is toast. The rod bearings aren't quite as bad but trashed, none the less.
    This is a blown jet boat deal, and after seeing the curling of the main bearings, my only conclusion is detonation...big time. The detonation curled the bearings which them wiped the crank of any oil causing the bearing failure. At the same time, the cam gear was taking out the front of the block, which added more material to the mix. In the end, I found that the little phenolic valve in the filter adapter bypass was gone. The oil path was straight from the pump, across the top of the filter, right back into the engine. All that foreign material just circulated, taking things to their current state.
    It's savable, but we're starting from scratch. The cyl's look good...the rings are trashed. The cam is OK, but needs a polishing. All in all, the damage is limited to the rings, bearings and crank, which has been replaced.
    At least that's my take on it.

  15. #13
    gn7
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    Quote Originally Posted by steelcomp View Post
    Ding ding! We have a winner!
    If they are loose enough to see that in a pic, why are they that loose. and please try to explain it without use the term DETONATION! Wags just could deal with that right now.


    EDIT: I was writing this as Steel was posting. I pretty much knew what caused it. Just wanted him to explain it with out saying what caused! That is some serious ass detonation right there. He is lucky he still has a block!



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    Last edited by gn7; 09-16-2010 at 09:57 PM.

  16. #14
    steelcomp was here
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    Quote Originally Posted by Uncle Dave View Post
    Is the crank worth saving- if so how does it look?

    Did a mega unobtanium crank demolish itself to save the inexpensive bearings?

    Bores dont look trashed.

    Cam looks like it might have worn down a lobe.


    Uncle Dave
    It was a stock GM forged unit, which did indeed sacrafice itself to the cause.

    One little detail I left out...the block had been bored and honed and align honed before...and it was obvious that many of the factory galley plugs had never been removed.

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