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Old 06-02-2010, 06:16 PM   #1
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differnet clutches???

whats the difference between the zx3 clutch /flywheel and the svt clutch/flywheel??


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Old 06-02-2010, 06:36 PM   #2
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Different size disc, flywheel, and pressure plate. Different number of splines in the disc as well. In other words, not even 1% compatibility.
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Old 06-03-2010, 06:36 AM   #3
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no i heard about the pre-tsb and the post-tsb, i understand that the size is different?? but what year did they switch? i have a 2003
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Old 06-03-2010, 06:38 AM   #4
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Those are not the same thing at all.

A *regular* Focus clutch is *entirely* different than an SVT clutch. Different size, different splines.

The TSB was for the SVT because the clutch components were too small.
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Old 06-03-2010, 04:59 PM   #5
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Quote:
Originally Posted by stevus prime View Post
but what year did they switch? i have a 2003
They didn't switch.
All years came from the factory with the same clutch/flywheel.

What they did do, was to revise the installation procedure for the clutch/flywheel in the late build models, which seemed to help with the failures.
However, those are still the same parts as earlier models.

When/if the clutch or flywheel went out is the only time they would have replaced the assembly with the TSB parts.
You can view the TSB here:
Clutch TSB: 4-21-19

BTW, the problem was not size, it was improper installation procedures. (improper alignment of the bell housing, improperly torqued flywheel, etc)
Granted, the new TSB parts are larger, but the smaller size (~1/2") is not what caused the failures.
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Old 06-03-2010, 05:44 PM   #6
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Oh, interesting. People have made several references to the size affecting longevity. I don't want to put words in Steve's mouth, but I thought that's what he was saying as well. Anyway, I'm sure it doesn't hurt that the parts are larger!
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Old 06-03-2010, 07:59 PM   #7
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Quote:
Originally Posted by WD40 View Post
They didn't switch.
All years came from the factory with the same clutch/flywheel.

What they did do, was to revise the installation procedure for the clutch/flywheel in the late build models, which seemed to help with the failures.
However, those are still the same parts as earlier models.

When/if the clutch or flywheel went out is the only time they would have replaced the assembly with the TSB parts.
You can view the TSB here:
Clutch TSB: 4-21-19

BTW, the problem was not size, it was improper installation procedures. (improper alignment of the bell housing, improperly torqued flywheel, etc)
Granted, the new TSB parts are larger, but the smaller size (~1/2") is not what caused the failures.

haha well that helps alot becuz my car is having that problem thats y i made this post so i can find out what i need...
im so glad i found this site, you guys are awesome and deffintily know ur shit
thank you
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