Quote:
Originally Posted by DrFerry
How does one tell this intriguing piece of intel from the pics?
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Quote:
Originally Posted by Helmsman
Curious, what does that mean?
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BMW gauges the crank before install and they laser etch serialize the crank as shown, they print what the bearings should be.
The block is also (supposed to be) engraved with the same information, since a tech needs to know and this is viewable without having to drop the pan.
There are supposed to be 3 different "colors" or sizes for the tolerance band meausred, Red, Yellow, and Green, most are Yellow or Green. I don't know if BMW has ever published the actual tolerance band. dealer service proceedures are to just replace like with like, no measuring, since that actually takes quite a bit of time and skill. This is why blueprinting matters. Also why putting in a differrent used crank isn't ideal, but literally YMMV.