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Flywheel Torque Specifications needed

Tiny
BMW 550I
  • MEMBER
  • 2011 BMW 550I
  • 4.4L
  • V8
  • TURBO
  • 2WD
  • AUTOMATIC
  • 97,000 MILES
Hi,

I have purchased a remanufactured N63B44A engine from BMW, and I will reuse the flywheel from my original engine. I have purchased new fasteners for the flywheel since the original fasteners are considered 1 used bolts according to BMW. Can you please provide the torque specification/value for the fasteners and any other pro tip/s I need to be successful?
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Tuesday, June 21st, 2022 AT 5:31 AM

3 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

Those bolts need to be torqued at 105 Nm or about 77.5 ft lbs.
Be sure to clean out the screw threads that are in the crankshaft, before installing the new screws.

I have attached the procedure below for your reference.

Let me know of any questions.
Thank you.

https://www.2carpros.com/articles/how-flexplates-work
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Tuesday, June 21st, 2022 AT 3:22 PM
Tiny
BMW 550I
  • MEMBER
  • 20 POSTS
Thank you, Sean, for the details. Also, the article defining flywheel vs flex plate is helpful. I have a flex. Thanks for the clarity.
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Tuesday, June 21st, 2022 AT 5:35 PM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
You are welcome.
Yes, automatic transmissions have flex plate.

Thank you for using 2CarPros.
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Tuesday, June 21st, 2022 AT 8:00 PM

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