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(actually Slim Jr now)
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Discussion Starter #1
My C code 68 Mustang 289 2V automatic has a counterweight behind the damper. I haven't found
this shown or referred to in the shop manual or in catalog engine exploded view part illustrations.

NPD shows 6A360 289 Hipo crankshaft counterweight on page 105. Is this also used
on C code engine or maybe mine's a morph? :shrug:
 

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(actually Slim Jr now)
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Discussion Starter #3
Hmmmm! To my knowledge the engine has had no major work. Years ago I replaced
the plastic toothed cam gear. Of course that counterweight sits right behind
the damper and had to be removed/replaced when I did the timing set!

Browsing the latest NPD cat I see that counterweight...289 HIPO!
Hey mine has that thing! It's just a C code!! :loco:
 

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Discussion Starter #4
pprince said:
The fact it is on your 289 C code is an aberration.
Anybody besides me have a external counterweight behind the harmonic damper/balancer
on their 289 2V?

My 68 is strictly stock, no modifications. Seemed to be original when I bought it in 1977.
 

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Only Hi Po 289s had that to counter the heavier rods used in the engine
 

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(actually Slim Jr now)
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Discussion Starter #6
blkfrd said:
Only Hi Po 289s had that to counter the heavier rods used in the engine
Hmmmm! Guess I've got a really rare 68 Code C special low perfomance HiPo! LOL!

As can be seen on my sig pic my 68 has factory A/C and power steering. You can barely
get a peek at the damper but with the engine running and a carefully aimed light
you can see the counterweight each time the engine rotates. Shut the engine off
and I can reach in and feel the counterwieght.
 

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You must be seeing something else.

The hipo hatchet weight sits behind the timing chain. Or is it in front...Anyways it is within the timing cover.
 

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Discussion Starter #8
Looks/feels like it's part of the back of the damper/balancer.

Tom
 

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Discussion Starter #9
Decided to do the obvious! DUH! Went to MU online catalog and looked at the
harmonic balancer they list for the 289. It's V1064 for non HiPo 289. WOW! The part
looks just like the one on my 289. The counerweight is cast on the back!!!!
:yoho: :yoho: :pirate:
 

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(actually Slim Jr now)
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Discussion Starter #12
I have a 67 C code and have the same counterweight too. I saw this thread and figured I'd dig it back up again seeing how there was no real explanation to the counterweight. FWIW mine also has factory air and PS.


Chris

Chris, you're new here, I have no excuse! I also described it as behind, guess if I had said on the back of my fellow VMFrs would have understood what I was saying!

Hey welcome, maybe we can learn proper termonology together!

Slim
 

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Counterbalance

I don't know 289's that well, but they were externally balanced. So I'm not surprised they had an offset weight in the damper. The flywheel is also has an orientation that's specific to the balance.
 
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