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Question on flywheel differences

Hello all,

I have a question regarding the difference in 2 flywheels and don't have both parts in front of me so can't compare the two.

Can a 1986 4.7S flywheel PET part no 928 102 075 01 for an M28.44 engine be used in a later 928 S4 5.0L M28.50 motor with the PET part no 928 102 075 04

I know the part no's are slightly different and obviously so are the engine sizes, however do the flywheels measure & weigh the same and have the same no of teeth?

Any and all help greatly appreciated
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Old 01-07-2018, 05:35 AM
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the 86 early flywheel is for a dual disc,
the S4 is single disc.
928 INTL lists two different parts so I would say they are not interchangeable
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Last edited by Mrmerlin; 01-08-2018 at 09:15 AM..
Old 01-07-2018, 01:59 PM
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Thanks appreciate the feedback
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Old 01-07-2018, 09:17 PM
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The number of teeth on the ignition ring are different and will not allow the newer engine/chassis to run at all, for certain if it's an automatic. The later flywheel will not fit the earlier block with the starter mounts being different and no clearance. Maybe a spacer on the crank will allow it to fit, haven't tried that yet, but need to.
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Old 02-04-2018, 05:27 PM
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Quote:
Originally Posted by Sapientoni View Post
The number of teeth on the ignition ring are different and will not allow the newer engine/chassis to run at all, for certain if it's an automatic. The later flywheel will not fit the earlier block with the starter mounts being different and no clearance. Maybe a spacer on the crank will allow it to fit, haven't tried that yet, but need to.
Thanks really appreciate the information
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1987 944 Turbo cup
Old 02-04-2018, 09:28 PM
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