is my balancer slipping off?
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Senior User
Joined: Oct 2012
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is my balancer slipping off?
im trying to see if my balancer is slipping off my 390. i have about 1/4 inch between the pulley and balancer and the pointer comes half way across the balancer right where the timing marks end. does this sound about right or is it slipping off?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
At the factory, a rubber gasket is placed between the outer pulley and inner damper, then the three parts are pressed together forming a one piece assembly.
Over time, the gasket age cracks/shrinks, causing the outer pulley to begin to "walk away" from the inner damper.
If not noticed, the pulley will separate from the inner damper, taking assorted belts and etc along with it. May end up in the radiator core. Not pleasant!
D5TZ-6316-D (replaced C8AZ-6316-B & D2TZ-6316-A) .. Harmonic Balancer / Obsolete ~ Available from autoparts stores.
1968/76 F100/350 360/390 / 1968/70 Galaxie/LTD/Fairlane/Torino/Mustang/Cougar 428 (except S/CJ) / 1968/71 Galaxie/LTD 390.
Over time, the gasket age cracks/shrinks, causing the outer pulley to begin to "walk away" from the inner damper.
If not noticed, the pulley will separate from the inner damper, taking assorted belts and etc along with it. May end up in the radiator core. Not pleasant!
D5TZ-6316-D (replaced C8AZ-6316-B & D2TZ-6316-A) .. Harmonic Balancer / Obsolete ~ Available from autoparts stores.
1968/76 F100/350 360/390 / 1968/70 Galaxie/LTD/Fairlane/Torino/Mustang/Cougar 428 (except S/CJ) / 1968/71 Galaxie/LTD 390.
New User
Joined: Jun 2005
Posts: 22
Likes: 0
From: Nixa, MO
I can tell you when/if it comes apart your heart will sink. I had one on my 351C come apart last fall. From the noise it made I thought a rod was hanging out of the block. Luckily, mine didn't tear anything else up in the process. If you have any question just replace it.
Senior User
Joined: Feb 2013
Posts: 125
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From: Illinois
The problem is the aftermarket versions, aren't they all from China? The ones I have seen are! Unless someone knows of a good brand, please share!
Good thing your rubber is good, I was going to say try to find a low-use original OEM.
Good thing your rubber is good, I was going to say try to find a low-use original OEM.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
NOS PARTS LTD in Waxahachie TX has 1 = 972-937-2201.
GREEN SALES CO. in Cincinnati OH has 10 = 800-543-4959.
CARPENTER NOS OBSOLETE PARTS in Concord NC has 67 = 800-476-9653.
New User
Joined: Jun 2005
Posts: 22
Likes: 0
From: Nixa, MO
Riverguideguy,
There should be a gap between the pulley and weighted ring of the harmonic balancer. The balancer has a threaded boss area on the front for the pulley to mount. I keep forgetting to take a picture of mine for you... However, if the weighted ring is not flush with the harmonic balancer hub ring you could have issues.
There should be a gap between the pulley and weighted ring of the harmonic balancer. The balancer has a threaded boss area on the front for the pulley to mount. I keep forgetting to take a picture of mine for you... However, if the weighted ring is not flush with the harmonic balancer hub ring you could have issues.
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Save the old ones
Joined: Dec 2002
Posts: 666
Likes: 4
From: Boyne Mich
I bought a Pioneer brand balancer. Seams good to me. Easy to read. Nice and tight. Does not look junk.
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