Rebuilding an AJ133 SC thanks to catastrophic timing chain failure.
Bought new pistons from ebay (approx $200 USD delivered). Generally look fine but the skirt isn't quite right. It's like the skirt is shaped for the NA version (no oil squirters above the crank/ between the bores), but the top faces is shaped for the SC. SC pistons have that little notch presumably to not block the oil stream at the very limit of travel. Parts/boxes are not marked in a way that lets me say yep, these are for the ___ motor, thus not for mine. Bonus - they don't match the ebay pic.
Anyone else seen these? Are these perhaps a newer revision?
subsequent pix show the oil squirter vs piston skirt. hard to show more clearly but it looks like the skirt will just barely miss the metal squirter, but certainly block the flow.

 

Hey, speaking of installing new pistons -- the bores look (not gouged) but the cross-hatch pattern is hit-or-miss. There more than not. If I search "do I need to ball-hone the bores" to get the cross-hatch back and thus have the rings seat properly -- the answer is, depends on the instructions with the pistons. and of course the pistons don't have instructions, or any documentation at all.
so? should I spend the $70 on a ball hone? or generally unnecessary?

 

Hard to say and it is a Jaguar?
But I never install pistons or rings without at least breaking the glaze with a dingle berry hone. Unless I just had the block bored at a machine shop. Even then I like the nice cross hatch the dingle berry hones leaves on the surface.
Can't see any down sides but I have never installed rings or pistons in a Jaguar engine either.

Maybe someone with more experience can way in?
I am interested in the answer as well.
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Is it a Jaguar? no, technically it's going (back) into a 2012 L322 RR SC. Thx -
as an aside, interesting how the pix on various websites show the SC pistons with and without that notch.