Current Project, Semi-Ordeal: M54B30 into 325xit

[SteveMD]

Happy New Year, guys.

I'm getting ready to swap parts from the M54B25 onto the M54B30, i.e, xi oil pan, motor mount brackets, etc. The M54B30 seems to be a ZHP but that's no biggie, parts-wise, from what I understand.

Still, others have BTDT and might have some tips for me. For example clutch kit. I guess I will stay with a stock Sachs or LUK kit. Some question as to which kit to get: one for a M54B25 or M54B30. Some vendors show the same part number for both engines. I am reusing the 5 speed (with new input shaft seal, shift shaft seal, the usual). The back of the new engine gets a new RMS and a trans input shaft pilot bearing since the engine came out of an auto car.

I need to check the dual mass flywheel for reusability. The clutch disc showed some unusual (to me) wear. Will post pic. This car had a new clutch put in under the PO a few years ago. LUK clutch.

Anyway tips welcome, thanks.

[Muzz258]

Go with the larger M54B30 clutch kit. Fits the existing DMF.

What are you planning on doing with the DME? Leave it as is or tune it for the M54B30 engine?

[SteveMD]

Thanks for the tip on the clutch kit. I will have the DME reflashed for the M54B30 ZHP. If that is something that I can't do myself, I understand that BMW Excluservice in Rockville, Maryland near me can do that. It will need to go in anyway for Maryland safety inspection prior to putting on the road.