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flywheel confusion 4.0-4.6

Old Nov 19, 2014 | 09:54 AM
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Default flywheel confusion 4.0-4.6

getting conflicting info
hoping to get more conflicting info from you folks.
then maybe I can get an average on conflicting info, and still be confused.
what is the difference between the 4.0 and 4.6 flywheel? is there a difference? why is there a difference? what if C A T really spelled "dog"?
 
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Old Nov 19, 2014 | 10:40 AM
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They're the same.
 
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Old Nov 19, 2014 | 10:42 AM
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that is what I thought. can't figure out why some sources are telling me otherwise.
 
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Old Nov 19, 2014 | 10:53 AM
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Likely because it was a different part number that superseded to the new number, and they haven't noticed or something.
 
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Old Nov 19, 2014 | 11:11 AM
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i believe you will find that the flywheels are weighted differently, just like harmonic balances. but i could be wrong
 
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Old Nov 19, 2014 | 11:13 AM
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I see.
prolly a booty cover. they want to give same part number replacement
 
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Old Nov 19, 2014 | 12:30 PM
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i was The Rover engines are internally balanced, which means that the crankshaft, flywheel and harmonic balancers are each individually balanced to a "neutral" state.
 

Last edited by drowssap; Nov 19, 2014 at 12:33 PM.
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Old Nov 19, 2014 | 12:43 PM
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very good. that was why I was asking....in process of getting all balanced
 
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Old Nov 19, 2014 | 12:43 PM
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There are differences in the gear ring. I'll post up pictures if I get a chance. They are, ultimately, interchangeable.
 
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Old Nov 19, 2014 | 01:03 PM
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Okay, you have one ring gear, the one on the left with a part number of HRC2932. I seem to recall this coming out of a 4.0L. The one on the right is TPD000050 which came out of a 4.6L. The one on the left comes in pieces whereas the one on the right is a single unit. Parrt number TPD000040 also is valid for the ring gear. The flex plate will work with any of these units.
 
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