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Thread: camshaft break-in

  1. #11
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    Question camshaft break-in...(did I break it?)

    So I finaly got the whole thing installed over the weekend.

    Break-in was damn scary! for the first 10-12 minutes it sounded like it was gonna blow itself to hell, but then it settled down (as did my heartrate, lol)
    I ended up having it running for about 25 minutes, and then let it cool overnight.

    Started it up the next day and there is a tick in it, can't pinpoint it to one valve (like before) but I don't know what it could be other than valves

    It's faint at idle but becomes more apparent at higher RPM.

    Is this 'normal' after a break-in and will it fade away or is there a good chance I did something wrong? maybe a 'bad' new lifter? worn pushrod maybe (I didn't get new ones)?

    I just got a timing light the other day, going to set my ignition 100%, maybe that helps...idk



    Greeting from Belgium

  2. #12
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    You could have had a lifter bleed down overnight. I would take it for a short ride and see if it is still ticking when you return. Some of the lifters out there today are not up to par, but let's see if it goes away under load first.
    Steve B.



    67 GS 525 Buick Stage IV
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  3. #13
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    Quote Originally Posted by Dr. Frankenbuick View Post
    You could have had a lifter bleed down overnight. I would take it for a short ride and see if it is still ticking when you return. Some of the lifters out there today are not up to par, but let's see if it goes away under load first.
    had it warm up a bit in the driveway and then drove it around the block for about 4 miles...doesn't seem to make any difference

    I have a trip to germany planned next weekend to an event, about 200+ miles round trip. would it be wise to take the Buick? see what ot does, or am I risking my whole engine?

  4. #14
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    Quote Originally Posted by james92 View Post
    maybe a 'bad' new lifter? worn pushrod maybe

    Greeting from Belgium
    in addition: "maybe" worn rockers, valve stem height not correct, cam if not new but reground will have a smaller base circle and along with other worn components and thick head gaskets. Drive it a few hundred miles to see of it calms down or shows you where to look.

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