Results 1 to 4 of 4

Thread: Broken Harmonic balancer

  1. #1
    Join Date
    Jul 2018
    Charlotte, NC

    Broken Harmonic balancer

    I have an 89 SC w/ 152,000. The harmonic Balancer Sheared off leaving the aluminum nozzle on the end of the crankshaft. This happened at approximately 146,000 miles. I had a local shop remove the remaining nozzle as well as the bolt that was broken off in the end of the Crank. He replaced the balancer with a part form Dorman's and the bolt came directly from Ford. After 6,000 miles, the balancer sheared off a second time. Has anyone experienced this before? Is this a case of a faulty part or a symptom of a larger problem? The engine runs smoothly and doesn't seem to have any issues. Unfortunately the replacement was done almost 2 years ago and the mechanic will not warranty the work. Any ideas how to remove the nozzle from the end of the shaft?

  2. #2
    Join Date
    Jul 2002
    Roanoke, Virginia
    The Dorman replacement balancer is the issue...they are not recommended by anyone who is knowledgeable about the SC platform.

    On the 89-93 SCs the powerbond balancers are the suggested replacement that work and are well built.

    PowerBond Premium OEM Replacement Harmonic Balancers - part number is PB1530N.

    Summit and O'Reilly Auto parts sell them. I got mine for 90$ shipped with a coupon code via OR website.

    Current Collection
    1994 Thunderbird SC - Auto converted to 5spd

    1995 Thunderbird SC - Auto

    1994 Thunderbird SC - 5spd
    1989 Thunderbird SC - 5spd - Daily Driver
    1990 Thunder/Cougar XR7 - 5spd
    1994 Thunderbird SC - 3v Project

  3. #3
    Join Date
    May 2012
    Denver Area
    You can remove the broken piece from the end of the shaft very carefully with a balancer puller if you CAREFULLY drill three holes (every 120 degrees) in the materials left on the crank. Once you have tiny holes drilled you can carefully insert a screw in each hole and extract the broken balancer. There's a good descriptive thread around here somewhere. I was trying to find it but haven't stumbled onto it yet.

  4. #4
    Join Date
    Sep 2003
    Elizabethtown, KY
    This is the one that I'm running on my 89:

    I've only had it on the car for 4 months, but I haven't had any issues out of it, and it's a lifetime warranty part. The price has gone up since I bought mine, but it is still under $100.

Similar Threads

  1. broken harmonic balancer
    By 1990tbirdsc in forum Technical Forum
    Replies: 7
    Last Post: 11-10-2006, 05:54 PM
  2. broken harmonic balancer or damper
    By mredavis123 in forum Technical Forum
    Replies: 6
    Last Post: 10-16-2004, 08:53 AM
  3. How to pull broken bolts out of Harmonic Balancer
    By syphon in forum Technical Forum
    Replies: 7
    Last Post: 04-28-2003, 10:25 AM
  4. Truly SAD! Another broken Harmonic Balancer!!
    By phils89sc in forum Technical Forum
    Replies: 7
    Last Post: 03-31-2003, 10:49 AM
  5. shaft near harmonic balancer broken!!!
    By derekhay316 in forum Non Technical Forum
    Replies: 7
    Last Post: 10-21-2002, 03:00 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts