Dave, this looks to me as if the bearing shells have rotated in the housing? - Hard to tell from a photo.
If so, the housing is oversize and the same thing will more than likely happen again with new shells.*
One way would be to fit a "new" (used) housing with less wear.
Unless axial alignment is checked though it's more a matter of "fit and hope" than "fit and forget".
If you want it bulletproof -
Machine a new top housing section about 1 or 2 thou larger diameter than the aluminium casting it fits into (so that it has to be pushed in with a little force). The inner diameter should be left 15 or 20 thou undersize.
Skim the joint face of the lower housing about 10 or 15 thou.
Ideally convert the casing to take bolts from below (then the joint is independent from the block fixing).
Then torque up the housing bolts with the block in position and have it line bored by your local engine recon shop.
Mark parts orientation so they can only go back in the right way...
* p.s. something I've seen before is a well intentioned person line-bored the housing, but failed to appreciate that without a machining allowance you simply end up with an oversize, oval bore... There has to be some metal there (on both sides) to machine.
If so, the housing is oversize and the same thing will more than likely happen again with new shells.*
One way would be to fit a "new" (used) housing with less wear.
Unless axial alignment is checked though it's more a matter of "fit and hope" than "fit and forget".
If you want it bulletproof -
Machine a new top housing section about 1 or 2 thou larger diameter than the aluminium casting it fits into (so that it has to be pushed in with a little force). The inner diameter should be left 15 or 20 thou undersize.
Skim the joint face of the lower housing about 10 or 15 thou.
Ideally convert the casing to take bolts from below (then the joint is independent from the block fixing).
Then torque up the housing bolts with the block in position and have it line bored by your local engine recon shop.
Mark parts orientation so they can only go back in the right way...
* p.s. something I've seen before is a well intentioned person line-bored the housing, but failed to appreciate that without a machining allowance you simply end up with an oversize, oval bore... There has to be some metal there (on both sides) to machine.