Got my mits on a service manual for a dc2
Maybe usefull to b16a my not be, but here's what I've found
Oem specs for b18c5(c6 here in the uk)
All in inches (service limit in brackets)
Piston to wall - .0004 - .0016 (.002)
Ring end gap(top) - .008 - .014 (.024)
Ring end gap(2nd) - .016 - .022 (.028)
Rod end play - .006 - .012 (.016)
Mains dia.(1,2,4,5) - 2.1644 - 2.1654
Mains dia.(3) - 2.1643 - 2.1653
Rod journal - 1.7707 - 1.7717
Main bearing.(1,2,4,5) - .0009 - .0017(.0020)
Main bearing.(3) - .0012 - .0019(.0024)
Rod bearing. - .0013 - .0020(.0024)
So quite a wide variance in clearance is with oem specs, even more so for service limits highlighted in (brackets)
This leads me to believe that the ACL, even though one size fits all, will fall into the oem specs on every journal unless real unlucky.