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  1. #1
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    Default 75 shovelhead rocker box, is this where metal came from??

    Hey guys never owned a bike before and im not the best wrench, but just bought me a 75 shovelhead.

    started going through it and the previous owner had a external oil filter and oil cooler system on the old bitch. the filter is a spin on can with a drop in style filter.

    pulled it open and there was a ton of thin flat metal shavings in it.

    game on, i tore it down to the frame

    checked the cam, checked all the internal gears by pulling the points cover off and the tappet guide holes out. all looks good. nothing wrong with the oil pump.

    tore into the rocker boxs and this is what i found..

    it looks like the bushing is "cut" into the rocker box in three of them. is this right?

    one of them is really tight to move by hand too.

    thanks for the info and advice
    Attached Thumbnails Attached Thumbnails 2012-06-01_21-03-15_649.jpg   2012-06-01_20-09-31_729.jpg   2012-06-01_20-09-22_666.jpg  

  2. #2
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    nevermind, looks like they are all like that, just milled different from the factory.

    fuck still cant find where that metal came from. oh well run it til it breaks

  3. #3
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    Quote Originally Posted by cornell3786 View Post
    nevermind, looks like they are all like that, just milled different from the factory.

    fuck still cant find where that metal came from. oh well run it til it breaks
    Find it now and maybe fix it cheap. Run it till it breaks and possibly fuck up a set of good cases and spend a LOT OF MONEY.

  4. #4
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    is the screw on filter crossthreaded?

    It seems weird that big metal shavings would make it all the way to the filter.
    Got any pics?

  5. #5
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    no it wasnt cross threaded.

    i tore everything apart besides splitting the cases.

    i had the bike running and never noticed any noises to lead to anything in the case.

    there was a bit of rocker noise, i found a rocker that is very loose and sloppy in the box so thats the answer to that, but still no answer as to the metal.

    i am in the process of putting it back together

  6. #6
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    wow that is quite a bit. I would look deeper into this. I would hate to see you half way to no where when something finally gives and your stuck.

  7. #7
    aaronc
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    Dude did you loose a lifter bearing,that'll make a mess.

  8. #8
    aaronc
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    That shit looks bad,I wouldnt run her till you find out what let go.

  9. #9
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    i tore it all apart. couldnt find anything wrong besides a rocker was loose. had a shim but still had a lot of play to it. very slight scratches in the back of the rear cylinder.

    i dont know how that much metal could make it through the motor without hurting anything.

    only thing i can think is it has been there for a long time.

    12,000 on the rebuild according to the previous owner. bored 10 over.

  10. #10
    xllance
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    Does it seem like hardened steel ? If so, it's probably a shim. Had the same thing happen to my Ironhead once but I had no filter. It just clogged up the screen on the oil pump inlet. Thing was after I tore it down and split the cases, I could account for every part. Nothing was missing. I figured at some point, someone dropped some "extra" parts in there.

    Wait! scratches on the cylinder? Maybe a piston ring or wrist pin keeper ?

  11. #11
    aaronc
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    Take your lifter bearings and clean em out with brake cleaner and check for any play.That looks like the same shit that happened to me.You couldnt tell the bearing failed till ya cleaned all the oil out.I just dont want you to have any problems.

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