Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
I suggest If in doubt go for the thicker of the two bearing related to each case code. Eg for C go for green not yellow. There is only 8 micron difference between the shells while the spec tolerance is 24 micron. Very unlikely to breach the lower tolerance and run in carefully should be no problem. I’m not sure about Plastigauge. If the crank is ovalled it all depends where you lay the strip. Would be interesting to know what the actual difference in oil pressure is between the same engine running different shell sizes. I suspect not much but no one knows!
OK, Quickly nipped down to inspect my crank cases and the stamps on the lower case are: 'BBBBB'So now I have a starting point! I'll recheck the journal sizes later and then I can deliberate as to what I fit. Based on the above, I assume the standard shell would have been green? (Ted, yellow is listed but for size A 1)