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Thread: valve train noise

  1. #1
    Member Biker
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    Nov 2008
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    CT
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    valve train noise

    as follow up to my earlier posts, after removing the heads I think I've found the source of the knocking noise from my engine. looks like the plate that holds the valve spring on the shaft is hitting the side of the rocker box pretty good. anyone have an idea what may cause this? the plate itself looks fine, but it may be harder metal (stainless?) than the brass that makes the rocker box. it looks like the pad on the rocker arm that pushes down the valve may be worn, but I've never seen one before so I don't know what its supposed to look like. thanks

    forget some maybe important info. the pushrod comes off the top of the tappet a bit of an angle. the other 3 pushrods come straight off the lifters.
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    Last edited by Shovl; 08-21-2010 at 01:27 AM.

  2. #2
    Member Biker
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    no replies after a week, first time that's happened. must be because everyone looked at this and said WTF? After taking that rocker box to a local shop, it seems that gouge was put there on purpose, to give the top of the valve spring some clearance. lots of work has been done to the valve seats, causing the spring collar to stick out farther than it should. have to keep looking for the source of the knocking noise. first time I've taken a Harley engine apart (or any engine, for that matter). I'm in way over my head, but having fun with this.

  3. #3
    Administrator Senior Member Wide's Avatar
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    Aug 2004
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    HCG World Headquarters, Signal Hill, CA
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    Ahh they put bigger ratio rockers or the fat ones

    These are just glorified briggs and stratton motors, no biggy just use the basics and you will be fine
    .-/c-.,_ /
    (_)'==(_)


    "parts left out cost nothing and create no service problems" Boss Kettering

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