red57
Jedi Knight
Online
I'm wondering if anyone has any idea why there are different rod bearing clearances listed for the 100-6 engine and the 3000 engine?
Cranks are interchangeable with same the diameters, both standard and undersize, and the stroke is the same.
Bearing shells are the same part number and sizes.
AFAIK, the only real different between 100-6 and 3000 is the bore (the early 100-6 had clamped wrist pins as opposed to floating pins, and the gallery head, but still the same rod bearings & crank).
The Bentley Book, Haynes, and Autopress all agree:
Main bearing clearances are the same for both engines at .0013 to .0028
But rod bearing clearances are different;
100-6 - .0005 to .002
3000 - .002 to .0035
My machinist says, "You'll be fine if they are around .002"
OK, but any idea why the specs are so different?
Thanks,
Dave
Cranks are interchangeable with same the diameters, both standard and undersize, and the stroke is the same.
Bearing shells are the same part number and sizes.
AFAIK, the only real different between 100-6 and 3000 is the bore (the early 100-6 had clamped wrist pins as opposed to floating pins, and the gallery head, but still the same rod bearings & crank).
The Bentley Book, Haynes, and Autopress all agree:
Main bearing clearances are the same for both engines at .0013 to .0028
But rod bearing clearances are different;
100-6 - .0005 to .002
3000 - .002 to .0035
My machinist says, "You'll be fine if they are around .002"
OK, but any idea why the specs are so different?
Thanks,
Dave