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  1. #1

    Seized connecting rod cap, should it be replaced?

    Hi,
    I need a help from you guys with the problem shown on the title.

    I知 Sunday mechanic working on my;
    Yamaha Fx Cruiser svho 2014 with 250 hr.

    The ski had been rebuilt by a mechanic in 2019 and this year, I知 trying to rebuilt it by myself.

    Currently I知 stuck in the problem.

    Bearings have a few scratch and it looked fine.
    But all connecting rods and caps have same seize... shown in the picture

    How are you legends thought for it?
    It痴 usable or replace?

    Thanks in advance.Click image for larger version. 

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  2. #2
    Myself's Avatar
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    Usually, when a bearing 'spins' it ruins the rod. The rod gains some clearance and loses the ability to properly clamp onto the bearing.

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  4. #3
    ptscon's Avatar
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    What's the reason for rebuild?

    Unless the picture is hiding something that just looks like the usual residue that ends up trapped between the rod and bearing.

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  6. #4
    Quote Originally Posted by Myself View Post
    Usually, when a bearing 'spins' it ruins the rod. The rod gains some clearance and loses the ability to properly clamp onto the bearing.
    That sounds horrible. Thanks for the answer

  7. #5
    Quote Originally Posted by ptscon View Post
    What's the reason for rebuild?

    Unless the picture is hiding something that just looks like the usual residue that ends up trapped between the rod and bearing.
    The piston rings got stuck by the rust so I decided to give a shot for rebuild.

    Mostly my curiosity for the engine work I never done before though!

    Thanks for the answer.

  8. #6
    Quote Originally Posted by ptscon View Post
    What's the reason for rebuild?

    Unless the picture is hiding something that just looks like the usual residue that ends up trapped between the rod and bearing.
    Do you think this is reusable?

  9. #7
    I like Boobs. wetwolf's Avatar
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    That rod is perfectly fine. What you are seeing is the normal chatter marks that happen between the bearing and rod.

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  11. #8
    ptscon's Avatar
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    Quote Originally Posted by jimmyjean View Post
    Do you think this is reusable?
    Yes, what you're seeing is normal.

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  13. #9
    Wolf714's Avatar
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    You can send them out and have the big ends honed and measured to make sure they are within specifications.

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  15. #10
    Quote Originally Posted by wetwolf View Post
    That rod is perfectly fine. What you are seeing is the normal chatter marks that happen between the bearing and rod.
    This is a very relief to hear that!
    Thanks for the answer

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