2.7 crankshaft bore smaller than diameter
 

Hello Rebuilder,
I assembles my crankshaft before I was sealing the case. After tighten the case bolts and perimeter studs in the sequence the crankshaft was turning fine.

I heard several rebuilders which complaines about stucking crankshaft.

So I dissabled all took the crankshaft out and re-assembled it again without the crank to remeasure. And now the surprise.
Main Bearing bores 2,3,4,5,6 are smaller than the crankshaft diameter.
Is this caused by an none aligned assembly. And do I have to worry.


Main Bearings Sollwert d1 Case Bore
56.990 - 56.971 mm

Lager 1 56.982 mm 56.990mm
Lager 2 56.980 mm 56.960mm
Lager 3 56.981 mm 56.970mm
Lager 4 56.980 mm 56.975mm
Lager 5 56.983 mm 56.960mm
Lager 6 56.979 mm 56.980mm
Lager 7 56.978 mm 56.999mm


Regards Bob.