bearing shells

[minigreen94]

hi,
while im waiting for gearbox parts to arrive we have continued with the engine build. we are now at the completley stripped stage
on inspection eveything looks ok but as always while the engine is down it makes sense to hone and re-ring along with replacing the mains and big ends.
the big ends are stamped with a number with standard so im ok with ordering those, but the mains just have numbers on wich are as follows; caps =6587 & LEB 10002 and the block side=4499 LEB 10001.
does anybody know if these are standard and which ones i need to replace them or which of the two numbers refer to after market sizes.
thanks in advance ...

[minigreen94]

also forgot to mention piston numbers wich are as follows; 21964 G8 T15.
all same apart from number 3 which is; 21964 G8 S43.
cheers , any info would be appreciated so i can order some piston rings.
thanks again.

[guru_1071]

the 'leb' number is the individual bearing, they are different due to the locations of the tabs and if the bearings are solid or grooved (as its an a plus engine). you will need to measure the crank to find what size you need. you will buy the bearings as a set, using a sinle part number - i.e aem91886

the piston number is the rover number (the 21***) which can be difficult to convert to a 100% correct aftermarket number, to find the correct ring pack you need to measure the thickness of the oil control rings, this will tell you if its hi, lo, or turbo. the other numbers on the pistons are just batch/date codes.