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  1. #1
    ou812's Avatar
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    Never before seen by most everyone...

    How does a dropped valve lose its Keepers into the #1 and #2 cylinders? There was a fragment embedded into the piston on number 1 cyl and a fragment in the number 2 cyl. No major damage just some love Taps on top of the Piston from the valve. Has anybody seen this or can explain how the keepers get inside the cylinders?
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  2. #2
    ptscon's Avatar
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    Is the valve guide still in place and in one piece?

  3. #3
    ou812's Avatar
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    Quote Originally Posted by ptscon View Post
    Is the valve guide still in place and in one piece?
    The seal is still in place, the guide is split but still there. The valve was still stuck in the seal so it was missing the piston luckily. I don't see how half the keeper made it into the cylinders. As you can see in the picture the other half of the keeper is still intact and was stuck in the spring...

  4. #4
    ptscon's Avatar
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    Not sure what split guide is exactly but only way a keeper is making it's way into the cylinder is if something significant happenes to the guide.

  5. #5
    ou812's Avatar
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    Quote Originally Posted by ptscon View Post
    Not sure what split guide is exactly but only way a keeper is making it's way into the cylinder is if something significant happenes to the guide.
    The guide is seated in place but because of the bent stem it is cracked open, the guide never left the seal on the top part of the head so how do the keepers get down inside there? Not only that, how did fragments get into the cylinder next to it?

  6. #6
    ptscon's Avatar
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    That's a weird one, post a pic of how the guide looks where the retainer failed.

  7. #7
    canuck's Avatar
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    Have you removed the head ?

    Could it be a piece of the guide tip that broke off and it looks like a keeper ?

  8. #8
    ou812's Avatar
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    Quote Originally Posted by canuck View Post
    Have you removed the head ?

    Could it be a piece of the guide tip that broke off and it looks like a keeper ?
    Yes the head is removed. I will take pictures when I get home tomorrow.
    Definitely pieces of a keeper. There were three fragments. The the guide is still in one piece it's just cracked/split from when the bent stem was forced back up.

  9. #9
    ou812's Avatar
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    The only thing I can think of, which is a one-in-a-million shot, would be half the keeper was stuck on the stem when it dropped below the seal. Then when the Piston smacked it back up the keeper fell off down through the shaft and was forced out of the guide area. The Piston then crunched it and was spit out the exhaust but somehow a piece bounce back in the next cylinder over and got crunched and embedded there. Geez that sounds like a long shot!
    It looks like all pieces are accounted for of the keepers.

  10. #10
    ptscon's Avatar
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    Quote Originally Posted by ou812 View Post
    spit out the exhaust but somehow a piece bounce back in the next cylinder over and got crunched and embedded there
    I posted that earlier but edited my msg because it sounded too crazy, especially since the failure was in a downstream cylinder so it would have to go up the stream

    Still a mystery how it got into the original cylinder, there's virtually zero clearance between the valve stem and the guide. Anything passing, without damaging the guide, would have to be inside the stem groves and then to get released inside the port the valve would practically have to be all the way out.

    You should play the lottery, probably better odds of winning.

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