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  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » How to id 50 oz vs 28 oz balancers

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    1/16/2014 7:17 PM  #1

    mainiac1
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    From: Niceville, FL.
    Registered: 4/03/2013
    Posts: 275

    How to id 50 oz vs 28 oz balancers

    Hey Guys/Gals, I am really close to having a serpentine set up on my 68 302...But, the 28 oz balencer that came on the engine is a 3 bolt set up and sticks out too far for belt alignment. I have another balancer (Blue one I think its off a 78 302), but could be off the 351W I got rid off. I'm unsure what weight it is and if its interchangeable. the black one is original 68 28 oz imbalence that came w engine I believe. numbers on the blue one are:  RG 3
    numbers on black one are:  C90E-6316-D2 SS11
    Can someone help me out here. If the blue one is a 50 oz, any idea what year balewncer I need to find to get one the same depth w 4 holes for the pulley? Thanks

    Last edited by mainiac1 (1/16/2014 7:19 PM)

    Stupid Hurts!...66 coupe, 302, 4 wheel disks...lots of Mods
     

    1/16/2014 8:38 PM  #2

    MS
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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 11,729

    Re: How to id 50 oz vs 28 oz balancers


    Pretty sure both of those shown are 28 ounce.  The 4-bolt one is from a 70 or newer, up to 80 or thereabout.

    The one pictured above is a 50 ounce.
     

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    1/16/2014 8:47 PM  #3

    mainiac1
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    From: Niceville, FL.
    Registered: 4/03/2013
    Posts: 275

    Re: How to id 50 oz vs 28 oz balancers

    Timing marks are quite a bit off between the 2 I have. They do look pretty close in the outside metal remove in the curve and I did read somewher up to 80 are 28 oz, thanks for the info.

    Stupid Hurts!...66 coupe, 302, 4 wheel disks...lots of Mods
       •Thread Starter
     

    1/16/2014 8:54 PM  #4

    MS
    Forum Originator

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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 11,729

    Re: How to id 50 oz vs 28 oz balancers

    Your 68 302 has timing marks on the driver side and lower hose on passenger side.  The different balancers have the timing marks on opposite sides.  Looking at the face of the balancer, put the keyway at 12:00 o'clock,  if the timing marks are on the left (about 10:00 o'clock) it is a 70 or newer.  If on the right (about 2:00 o'clock) it is a 69 or older.

    The best bet for you in order to change to a serpentine belt system is to order a 28 ounce balancer from SUMMIT RACING.  They make one with 3 and 4 bolt patterns on the same balancer and it comes with a removable spacer for fitting various pulleys.  They are pretty good quality.  I have one on my 427, but it is a zero balance, simply by unbolting and removing the weight.  Around $80 as I recall.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    1/17/2014 6:06 PM  #5

    mainiac1
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    From: Niceville, FL.
    Registered: 4/03/2013
    Posts: 275

    Re: How to id 50 oz vs 28 oz balancers

    Good idea Steve...started to clean up the old blue one and has been abused some by the looks. Ordered a new one from Jegga today.

    Stupid Hurts!...66 coupe, 302, 4 wheel disks...lots of Mods
       •Thread Starter
     

     

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