Massive coolant leak
 

https://cimg9.ibsrv.net/gimg/www.jag...a26418082.jpeg
Just pulled up to the drive up ATM and heard both fans running turn the car off and popped the hood and found the expansion tank empty and it looks like it sprayed antifreeze all over the drivers side under the hood and on the drivers headlight.
Just had the car towed. Looks familiar to anyone?
Just had the oil changed at the dealer 4 days ago I would think they would have noticed a antifreeze leak if it was the water pump?

From the photo, it appears the water outlet that contains the thermostat has failed.

How many kilometres/miles on the vehicle? Has the water outlet been replaced as it can only go through a finite number of cold and hot cycles before failing.

I just hit 156k miles today
I was so excited :icon_eddie:

Has the water outlet ever been replaced? It must be replaced each time the coolant is changed or it is going to fail.

The JLR part number is AJ811793.

I didn’t see anything like that replaced in the service history.

Yep, XK got the plastic version, //R the aluminum one. My son's Lincoln LS did that same thing a couple times. Same family of engine with a really piss poor thermostat design. It's not self contained like most. The spring pressure pushes against the fiber reinforced plastic pieces causing them to break.

So can you get the aluminum for the XK or is the design different due to SC?

I"m pretty sure it's blower related. Pity really.

No such luck with the housing they only come in the plastic variety by memory I replaced mine at 40k miles / 7yrs

There is no aluminium version of the water outlet for the normally aspirated 4.2 engine.

Is it SOP to replace during flush/service or will I need to ask when I go in for standard coolant service?

Thanks!

Find someone with a CNC machine and have one cut from billet. OR, have one cast, get a pattern and sell a whole bunch of them.

What about 3D printing with an appropriate media?

I'd never trust anything printed to contain pressurized boiling liquid, especially when loss of that liquid would be catastrophic.

You will need to request the water outlet be changed.

I do 3D printing. CeeJay is right on here, the pressure would be the problem.

If it works for brake calipers it should be OK for the coolant system :)

https://arstechnica.com/cars/2018/03...ti-and-porsche

Dunno about you, but I don't have a Titanium 3D printer. I'm sure there has to be pressure and heat while printing, just can't lay powder on top of powder and have it actually work.

depends on the quality of 3D printing. They're doing 3D printed rocket engines now that i'm sure see a lot more force than a normal coolant system, just have to pay for it.

Make a mold of the plastic OEM, cast one using alumin(i)um. Cost about $10 and a couple hours work. Course one would need the proper tools.