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Thread: Rocker Arms - 3.5 - 3.9l - are they the same ?

  1. 30th September 2005, 06:27 AM #1
    4range Guest

    Rocker Arms - 3.5 - 3.9l - are they the same ?

    Well, are they?

    Having embarked on stripping a 3.9 to rebuild and replace the tired 3.5, an inspection of the rocker arms shows that one in particular has the little metal cup insert, almost worn through.

    I really have two questions: -

    1. are the rocker arms the same in both motors? (they look the same - and I'm thinking replace the worn one with one from the current engine)

    2. what are the possible causes for the unusual wear? ( it's only one of the arms the others are all OK)

    and one more whilst the going is good: -

    when I removed the rocker cover, sitting next to one of the valve springs (loose) was a small steel collar thingy, about 8mm in diameter and about 3mm wide. Any body know what this might be ? or is it jst one of those redundant bits like leftover nuts and bolts that I always seem to have?

    TIA
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  2. 30th September 2005, 02:07 PM #2
    discowhite's Avatar
    discowhite
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    rocker arms are the same! they are left and right though!
    the wear you speak of is most likley from a valve thate not rotating
    or there is not enough pre load for that rocker.(making it noisy)
    make sure all the oil ways for the rocker feed are clean. they have a habit of blocking up with gunk in the head.

    <div class='quotetop'>QUOTE</div><div class='quotemain'>when I removed the rocker cover, sitting next to one of the valve springs (loose) was a small steel collar thingy, about 8mm in diameter and about 3mm wide. Any body know what this might be ? or is it jst one of those redundant bits like leftover nuts and bolts that I always seem to have? [/b][/quote]

    its not a valve collet is it?? is it tapered??

    phil
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  3. 30th September 2005, 04:18 PM #3
    4range Guest
    Thanks Phil,

    Nah ! not tapered - its not a collet.

    I'll have to try and get a couple of photo's up.
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  4. 30th September 2005, 05:56 PM #4
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    discowhite
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    wonder if its part of a stem seal?

    thats got noffin to do with stem cell reasearch 8O
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