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#1
07-19-2017, 09:48 PM
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Harmonic balancer 101
Idler pulleys, tensioner, the works. 2003 M62 4.6. After completing everything, I noticed that my harmonic balancer is not perfectly true. Perhaps I watch to many Jet engines that are balanced to the nearest nano gram. I thought the balancer should rotate perfectly. I have zero belt problems or any vibrations. Am I overthinking this?
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2003 4.6is X5 2003 525it 2003 E53 X5 Standard shift 
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#2
07-19-2017, 11:43 PM
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If you're not getting any vibrations or odd sounds then you should be fine. Though for what it's worth it's not super hard to remove/replace the harmonic balancer— you just remove the belts and undo 8 bolts on the harmonic balancer and it comes right off. You don't have to touch the big crank bolt at all.
The trouble is finding a replacement— most will be the same given the age and mileage of these cars. A new one is around $500. If it's not causing any problems then just leave it as it is.
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2003 X5 4.6 | 2000 540i Touring Formerly owned: 2004 Range Rover | 2000 M5 | 2000 540i/6 1995 750il | 2003 Mercedes S500 | 2003 540i/6
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#3
07-23-2017, 06:58 PM
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I have a good spare if needed
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01Evolve M5 86k silver over black, 02 M5 indi, Dinan, white over caramel 106k. 1991 850i with 66k ttint 72 TA # matching 455HO, with a few tweaks, 06 CCSB 2500 Duramax LBZ with 120 hp efilive tune, 03 CCDRW,LB7 with a 120hp efi live tune 140k. 99 FLHT. 03 FXDWG with 103 in it. 1981 yamaha 850 3cyl. Piped and carbed, cafe in progress. 1997 26' Eliminator eagle, 548 cid BBC built by me. 93mph. Lastly the reason why i am here, 05 x5 4.4. Purchased for pocket change and trailered home.
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