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Old 07-14-2014, 11:33 AM   #16
ac_2007
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2005 with 96k on it, wow.

You must either have the worst luck, negligent previous owner(s), or BMW really couldn't design an engine.

What history do you have on the vehicle?
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Old 07-14-2014, 02:16 PM   #17
Quickid
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Heard of rod bearing issues from Z4M owners who are anal about maintenance.

It's not only an issue with neglected S54s. If you own one, just make sure you have some money put away for future rod bearing repair.
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Old 07-14-2014, 05:01 PM   #18
2bmwguy
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Welcome back!

How was your vacation?
I missed the m3 vs the m5 thread.lol
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Old 07-14-2014, 05:07 PM   #19
2bmwguy
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Originally Posted by Quickid View Post
Heard of rod bearing issues from Z4M owners who are anal about maintenance.

It's not only an issue with neglected S54s. If you own one, just make sure you have some money put away for future rod bearing repair.
Its the high revs , why bearings go quick.how can you NOT rev that s54 motor.
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Old 07-15-2014, 12:30 PM   #20
Jon@Bimmersport
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Same thing happened to me we thought if was the rod bearings replaced them ..then we started it up and the same knock noise was there..we found out it was the piston pin on #6
But...The bearing on #6 cly was really bad too. I end up buying another block with 70k on it after all that.!!. 4k later.

I assume 4k was cheaper than rebuilding it all properly right?
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Old 07-15-2014, 08:50 PM   #21
2bmwguy
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I assume 4k was cheaper than rebuilding it all properly right?
Yes ..buying another motor would be a bit cheaper than rebuilding it all. Now i have bought a Twin Turbo bmw 335 ....lol thats another problem waiting to come one day.
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