Metal Pieces Under Valve Cover
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Metal Pieces Under Valve Cover

  1. #1
    Senior Member 74Bonneville's Avatar
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    Default Metal Pieces Under Valve Cover

    Calling GN7 and all others

    Every 2 or 3 times out I run a compression check and look under the valve covers. After compression check I pulled valve cover to look and double check valve lash and this is what I found. All of the shavings were on even side 2,4,6,8. I noticed 1 piece on valve cover gasket. I used a magnet and picked up most of this in back above #8 cylinder in the pool of oil that sits in the corner.

    What's coming apart? Valve guides?

    Piece on my finger was biggest piece

    A little back ground, when I built this motor a couple of years ago I did a lot of research, unfortunately I had not found this site yet. I bought my JE flat top pistons & rings from Teague Marine (5 minutes from my house) when I was picking them up Bob was kind enough to come up and ask me what I was up too. Building my engine around my Procharger Bob offered me the specs he uses for the pistons bore & ring gap on a blower motor, he wrote them down on the box and I told my machine shop to do this. What I didn't know at the time, but have read here is the valve guides in a marine application should be a little bigger too. I simply asked for a valve job and I expect it was done to automotive clearances.

    Compression after break in was 7 cylinders at 125 and 1 at 123.

    Now
    1-125 3-125
    3-130 4-125
    5-125 6-115
    7-130 8-120

    I did this cold and generally speaking I'm looking for differences at current check, not so much a 10 psi difference from last check to this one, however #6 has me concerned due to what I found.

    Last check 3 & 4 were 135, 6 & 8 were 128 Metal shaving found near 6 & 8 not that it means anything.

    On a side note all of the spark plug washers are stuck to the heads. More annoying than anything else although it would be nice to get them out. Any suggestions? Small sharp hook on a hanger wire?

    Thanks for the help guys
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    Senior Member dankdave79's Avatar
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    I'd pull the whole thing apart before it becomes a hand grenade

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    gn7
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    In wouldn't be to concerned with the #6. Was this thing running OK when you took it off the water. You say its magnetic?

    Stock iron heads? Looks like Ti retainers. Guessing a roller cam.

    See if you can get a look at ALL the valve seals.

    As for the plug washers....are you SURE they take a washer plug and not tapered seat?



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    Last edited by gn7; 05-30-2013 at 07:46 PM.

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  6. #4
    gn7
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    Quote Originally Posted by dankdave79 View Post
    I'd pull the whole thing apart before it becomes a hand grenade
    Boy, thats a quick judgement!



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    Senior Member 74Bonneville's Avatar
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    Quote Originally Posted by gn7 View Post
    In wouldn't be to concerned with the #6. Was this thing running OK when you took it off the water. You say its magnetic?

    Stock iron heads? Looks like Ti retainers. Guessing a roller cam.

    See if you can get a look at ALL the valve seals.

    As for the plug washers....are you SURE they take a washer plug and not tapered seat?
    Running great last weekend. 94 mph at 6000 or 6100 rpm, quick look at tach. At one point I thought I heard a tick, this is why I was going to check valve lash.

    Yes magnetic

    Yes iron heads, no, flat tappet cam

    Hmmmm good question, I don't know. Bought plugs from Teague and asked for recommendation on my motor. I bet they use taper, why else would they be stuck.

    I can pull the valve springs and take a look at everything from outside. I push a heavy rope inside of spark plug hole then ease the piston up so valves don't fall in. Read this somewhere when I had to add inner spring after cam break in.

    Am I looking at the valve seals to see if one looks different from the others?

    Thanks again

    I did pull oil filter and poured oil out, nothing unusual. Although if there were something unusual its probably inside filter.

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    Senior Member 74Bonneville's Avatar
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    Quote Originally Posted by dankdave79 View Post
    I'd pull the whole thing apart before it becomes a hand grenade
    I thought all of us high performance guys drive hand grenades every time we start the engine

    I'm going to find this before I run it again, but it's upper not lower. No reason to pull bottom end apart just yet.

  9. #7
    gn7
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    If you can pull the springs, all the better. You need to see if they are positve type seal like this, and if all the metal is still on all of them. Some Ti retainers have a deep keeper hole or "tube" to strengthen them. Cranes are the worse for this. With stock length valves and enough lift it puts the retainer into the seal. Or its possible one just failed.

    As for the plugs, when you get a washer out, it will probably tell you, plus you can look in the spark plug hole and see if there is a tapered seat. But I think the washer will alert you.





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    Last edited by gn7; 05-30-2013 at 08:21 PM.

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    Senior Member ol guy's Avatar
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    Did you flip the valve covers to see if you are eating a deflector and what valve covers are you running?

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    Quote Originally Posted by ol guy View Post
    Did you flip the valve covers to see if you are eating a deflector and what valve covers are you running?
    I did look inside the valve covers. Old school Moroso chrome covers, no damage inside.

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    Peek through the pushrod holes at the tops of the lifters....see in there's any chunks missing.
    GN7: "If you were to have ever had two brain cells you could rub together and make heat, you be dangerous"

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    Cut the filter open and see whats in it Those are some big chunks , I know its a big pain but i would pull the pan and intake
    Barack hussein obama he destroyed our country piece by piece we Must impeach this evil beast

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    Quote Originally Posted by dankdave79 View Post
    I'd pull the whole thing apart before it becomes a hand grenade
    I totally agree.
    1st you’ll find all the damaged parts.
    2nd You’ll be able to remove all the debris from the engine. There will be more trash in the pan.
    Do you really want to do this twice??
    My Opinion..
    Good Luck
    Please let us know how it is going.

  15. #13
    gn7
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    Quote Originally Posted by Bass Lake Boz View Post
    I totally agree.
    1st you’ll find all the damaged parts.
    2nd You’ll be able to remove all the debris from the engine. There will be more trash in the pan.
    Do you really want to do this twice??
    My Opinion..
    Good Luck
    Please let us know how it is going.
    First I think I would find out where it came from and how much was torn up. If thats only one seal, I would say he has 99% of it.



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  16. #14
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    Quote Originally Posted by gn7 View Post
    First I think I would find out where it came from and how much was torn up. If thats only one seal, I would say he has 99% of it.

    GN7 you may be correct.
    I really don’t want to tell you all this.
    When I was working as a mechanic several years ago a man towed in his Ford van that had quit running.
    The engine had locked up . The oil pump had sucked up a piece of nylon from the timing gear and it had logged in the gears of the pump. The oil pump drive shaft had twisted like a rod iron fence before it broke but the distributor gear roll pin never sheared like it should have. The engine ran until the crank seized. Thinking someone replaced the pin with a needle bearing or something I examined it & found it to be the factory pin.
    There is NO WAY I would believe you or anybody else that told me this had or could happen.
    Especially knowing how quick some people are to pounce on someone. What would be my motive to get in front of the firing squad if I didn’t have too.
    After first hand witnessing this I will not take any chances with debris in the pan because I was too cheap to pay for a gasket set.
    I had saved that shaft for years to show people what was possible.

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