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  #1  
Old 01-07-2013, 09:16 PM
theoryman theoryman is offline
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Join Date: Jan 2013
Location: Michigan
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Vehicle: 1994 Ram 1500 4x4 5.2l
Trim Level: SLT
Color: Green
Engine: 1994-2001 318ci (5.2L) Magnum V8 220hp
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Default Flex plates

Does anyone know what the difference between the 1994-1995 Flex Plate and the 1996-2001 flex plate for the 5.2l is?

I think that I may have the 1996-2001 plate on my 1994 truck.

Any definitive way to tell without pulling the engine?

Truck runs, but seems like the ignition timing is very retarded when in open loop mode...

Seems like the split is at the change over from OBD-I to OBD-II.

Ideas?

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  #2  
Old 01-08-2013, 10:40 PM
Gen1dak Gen1dak is offline
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Default

The only difference (for the 5.2) is the bolt pattern for attaching to the torque converter changed from the asymmetrical pattern to a 90-degree symmetrical pattern. If you have a '96-'01 flexplate, you would also have a matching vintage torque converter as they were used by Chrysler in warranty work. The only other way to use an OBD II-era flexplate on an OBD I-era torque converter is to oval-out the one bolt hole in the converter that doesn't match up. All OBD II flexplates and converters can be identified by the "90" stamp in the castings, indicating they are of the symmetrical 90-degree bolt pattern variety. For the 5.9, there is one additional difference in that the balance weight is on the torque converter for OBD I, but was moved to the flexplate for OBD II.
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Old 01-09-2013, 11:05 AM
theoryman theoryman is offline
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Join Date: Jan 2013
Location: Michigan
Posts: 2
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Vehicle: 1994 Ram 1500 4x4 5.2l
Trim Level: SLT
Color: Green
Engine: 1994-2001 318ci (5.2L) Magnum V8 220hp
Rep Power: 0
Rep:10
theoryman is on a distinguished road
Default

So, changing the flex plate will not change the timing slots position relative to the crank sensor or to TDC of #1...

Thank you very much.

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  #4  
Old 01-14-2013, 09:09 PM
Gen1dak Gen1dak is offline
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Rep Power: 4
Rep:85
Gen1dak will become famous soon enough
Default

Yeah. Looks like the issue you're having is somewhere else.
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