E46Fanatics - View Single Post - My 2003 330i ZHP S54 Swap Conversion
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Old 08-22-2017, 05:53 AM   #17
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Join Date: Apr 2015
Location: SoCal
Posts: 2,554
My Ride: 01 330Ci "Mia"
Originally Posted by nextelbuddy View Post
no worries!

if you keep your ZF 6 speed transmission and just swap in an S54 engine all you have to do is reuse flywheel from the M54 engine because it has a pilot bearing mounted inside the flywheel which the ZF tranny needs and then you have to use a clutch/pP combo for M54 as well to work with the flywheel. it will all bolt on with no issues to the S54.
This is all information that was rather blurry until now. Sadly, I just got my hands on a Z4M transmission instead which uses the same clutch/flywheel's as the M3. Hopefully someone else will find that info useful!
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