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Thread: Harmonic balancer choice
          
   
   

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  1. #1
    dhemi1's Avatar
    dhemi1 is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 2006 Nissan Titan, 2007 Traxxas T-MAXX
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    Harmonic balancer choice

     



    Hi all.

    How do I tell what harmonic balancer I will need for my engine? What size will I need? Why do they have different sizes? Below is the rotating assembly I plan to use.

    BTW, this is a Eagle rotating assembly
    Crank: Cast
    Rods: I-beam
    Bearings: Clevite 77
    Stoke: 3.750
    Displ. @0.030: 383
    Rod Length: 6.00
    Pistons: -16cc SRP forged
    Rings: Perfect Circle (file fit)
    Compression Ratio:
    @58cc:10.4:1
    @64cc: 9.8:1 (This one)
    @76cc: 8.7:1
    Bore Sizes: std,.020,.030,.040,.060
    *Internally Balanced* *Does not include flexplate (153 or 168 tooth) or dampener*

    Thanks for your time,

    -Chris.

  2. #2
    erik erikson's Avatar
    erik erikson is offline CHR Member Visit my Photo Gallery
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    Aug 2004
    Location
    clive
    Car Year, Make, Model: BLOWN 540 57 CHEVY
    Posts
    2,878

    Quote Originally Posted by dhemi1
    Hi all.

    How do I tell what harmonic balancer I will need for my engine? What size will I need? Why do they have different sizes? Below is the rotating assembly I plan to use.

    BTW, this is a Eagle rotating assembly
    Crank: Cast
    Rods: I-beam
    Bearings: Clevite 77
    Stoke: 3.750
    Displ. @0.030: 383
    Rod Length: 6.00
    Pistons: -16cc SRP forged
    Rings: Perfect Circle (file fit)
    Compression Ratio:
    @58cc:10.4:1
    @64cc: 9.8:1 (This one)
    @76cc: 8.7:1
    Bore Sizes: std,.020,.030,.040,.060
    *Internally Balanced* *Does not include flexplate (153 or 168 tooth) or dampener*

    Thanks for your time,

    -Chris.
    If it is an internally balanced engine you need to run a 350 balancer and 350 flexplate.
    If it is ext. bal. you need to run a 400 balancer and 400 flexplate.

  3. #3
    dhemi1's Avatar
    dhemi1 is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 2006 Nissan Titan, 2007 Traxxas T-MAXX
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    Yep, but what size? I can go with a 6.325" or 7". Does it matter?

    -Chris

  4. #4
    erik erikson's Avatar
    erik erikson is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by dhemi1
    Yep, but what size? I can go with a 6.325" or 7". Does it matter?

    -Chris
    For a street car I would run the larger dia. to help reduce more of the harmonics.

  5. #5
    dhemi1's Avatar
    dhemi1 is offline CHR Member Visit my Photo Gallery
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    ah I c. Thanks Eric!! I was wondering what the different sizes meant. lol its so obvious now

    -Chris

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