Post
by AndyBeech » Tue Feb 07, 2017 12:46 pm
Smartbear wrote:VRSteve wrote:Smartbear wrote:I thought when the m3 using the same engine started having problems, bmw issued a modified bolt set for the big ends (I think the old ones stretched?)
Apparently they didn't extend this the the z4m using the same engine, later car's had the different bolts from the factory I believe.
Rob
You're right....the bolts were changed in 2003 so given that the Z didn't get the engine until 2006 I can't imagine the Z would have ever needed a recall on them.
The bearings can spin due to the bolts stretching, but if you're going to the effort of dropping the sump and changing the bolts why on earth wouldn't you change the shells too??
I thought the early z4m's were fitted with the stretchy bolts? I seem to remember owners being really irked that bmw didn't treat them in the same manner as the m3 guys.
Rob
That would make no sense at all?
Why would they fit a pre 2003 engine to a 2006 car when all engines they made after the bolt recall came with the new design? If you look at a lot of the engine parts on RealOEM the Z4M has most of the last iteration parts fitted that they designed for the S54. Bosch coils instead of the potentially troublesome Bremi coils for example (think that's the right way around).
Where's this info of irked Z4M owners?
http://www.realoem.com/bmw/enUS/part?id ... 1247834310
Last edited by
AndyBeech on Tue Feb 07, 2017 12:56 pm, edited 2 times in total.
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