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  1. #1
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    weight balancing connecting rods

    Where is the weight removed from either the 5250 or 8118 rods?
    Just smooth out the sides or some off the small end?
    Just to weight balance the piston/rod assembly.

  2. #2
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    This is just me. I weigh rod as a whole then set up a way for rod to pivot from each end then get weight from both ends to see if extra weight is in center or on one of the ends. Then remove weight accordingly. Usually just smoothing the edges that look like casting marks. This is just my unprofessional method.

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  4. #3
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    There are some good video on youtube on this. I've watched it but don't remember the exact sequence. I think you balance each end using a pivot fixture and then do the total weight. I would think the most important thing is to have a quality repeatable scale.
    Speed cost money. How fast you wanna go?
    I have done so much with so little for so long, I can now do the impossible with nothing!

  5. #4
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    This is how weight was removed from my connecting rods.

    Click image for larger version. 

Name:	20170309_082252.jpg 
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    If I don't ask any questions, I'll never learn anything.

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  7. #5
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    Shows if ya got the nads you can take weight off where ever you want... Be nice to see how long those would last in a lake motor,

  8. #6
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    Quote Originally Posted by H2OPERF View Post
    Shows if ya got the nads you can take weight off where ever you want... Be nice to see how long those would last in a lake motor,
    I can tell you how long they last in a drag motor. Less time than it took to type this....

    Ló fasz racing
    Joe Horvath

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  10. #7
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    Post number 3 has the correct method

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  12. #8
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    I'd go with what Racer says. He has always be dead on in the info he gave me.

  13. #9
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    Quote Originally Posted by jphii View Post
    I can tell you how long they last in a drag motor. Less time than it took to type this....
    looks like its been run piston is used.

  14. #10
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    Last one at the finish line loses
    If I don't ask any questions, I'll never learn anything.

  15. #11
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    Quote Originally Posted by Krazymaan View Post
    This is how weight was removed from my connecting rods.

    Click image for larger version. 

Name:	20170309_082252.jpg 
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    what is up with that oval window and never seen one so wide directly above wrist pin!!
    "Whacker Smacker" #561 IHBA M/E div1 2007& 2006 first looser champion
    2007 Sportsmen Driver of the Year

  16. #12
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    Quote Originally Posted by stoker2001 View Post
    what is up with that oval window and never seen one so wide directly above wrist pin!!
    I'm not sure, maybe someone else can answer that question. or jphil, he seems to know what works.
    If I don't ask any questions, I'll never learn anything.

  17. #13
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    Quote Originally Posted by Krazymaan View Post
    I'm not sure, maybe someone else can answer that question. or jphil, he seems to know what works.
    No ideas. I do know how to blow chit up.

    Ló fasz racing
    Joe Horvath

  18. #14
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    There is nothing wrong with Doing Rods as pictured so long as they are smoothed all over and the bob weights are matched as well as total weights. Ive turned these 11k. But IMO rods like these dont need to go in a river motor thats going to be run up and down at various RPM. Drag motor rods are exactly that.


    Bud Conner "Heathen" "Defending Our Constitution"

    FOR ALL ENGINE APPLICATIONS
    DRY Film Lubricant for Piston Skirts & Cranks + Thermal Barrier Ceramic Coatings for Piston Tops, Combustion Chambers, Valves etc !!



  19. #15
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    I dont think they are oval. its just the angle of the picture creating that Illusion.

    Quote Originally Posted by stoker2001 View Post
    what is up with that oval window and never seen one so wide directly above wrist pin!!
    Bud Conner "Heathen" "Defending Our Constitution"

    FOR ALL ENGINE APPLICATIONS
    DRY Film Lubricant for Piston Skirts & Cranks + Thermal Barrier Ceramic Coatings for Piston Tops, Combustion Chambers, Valves etc !!



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