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.
.
.
.

 

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.

 

Have kind of similar question.
I’ve been working on a project 2015 Land Rover Range Rover autobiography with unknown history. All I know it is not original engine.
trying to figure out if the pistons are oem.. They look suspiciously clean.

 

From looking at pistons I see OEM and after market with those markings. So it's not clear.

Here is a new one from Euro-Amp and it looks to be marked the same as yours. Difficult to see in that picture. They have the notch.
Euro-Amp Piston

Here is another new piston from EBay and the markings are the same as yours. This is an aftermarket part.





But here is an OEM used piston and it has the same markings. But no notch on the piston skirt.
Used Piston


Hard to see but the same markings. Note this is listed as a LR piston.

I was surprised to see how many internal parts are now available. I had not looked in some time but many piston/rod sets in std. and oversize.
.
.
.

 

With all the issues I’m facing and the potential cost to fix everything, it’s starting to make more sense to buy a used engine, have the bores inspected with a scope, replace/check the timing and cooling systems, and move forward with that.

I’ve read that many Jaguar engines will fit if you swap the oil pan, oil pump, sensors, wiring, and brackets. Does anyone have suggestions for buying a used Jaguar engine? Specifically:

• Are there model years I should avoid?
• Which years or variants are considered more reliable?
• Are there any versions that are more powerful and would still fit with reasonable adaptation?

Any recommendations or things you’d watch out for when sourcing a used Jag engine would be really appreciated. Thanks!

 

No direct experience with engine replacement. But from what's been posted over the years I would try to get one that is as close as possible to what's currently in the car. Many little changes made from year to year so that complicates sourcing a used engine. I would not worry about the power levels as the 5.0L SC engines are all the same and the power differences are in the tune and pulley. I have always recommended getting a tune and at least the lower pulley. These are easy mods and add a lot of power.

In general the later the engine and the lower the miles the better. Jaguar did make some improvements in the timing stuff from around 2014+. We do still see problems with the later cars but it is reported less.

Hopefully Kansanbrit or Xalty will answer as both of them run shops and have deep experience with engine replacements.
.
.
.

 

just bought a 46k miles engine on eBay from EUROPART for around 5k. Sounds too good to be true, but the seller seems to be ok.

 

That one does sound good. 46K I like!
.
.
.

 

Another question: will the torque converter from the jag fit to my car? According to this description they are interchangeable.

 

Don't know sorry. He does list a lot of part numbers and from what I can find in JPART they do look to interchange but again I find a number of part numbers depending on the VIN. It does not help that JLR does not tell you what LR and Jaguar parts are the same but have different part numbers.
.
.
.