Thread: Water exchange /Thermostat unit replacement

I don't think you've said what engine it is, but assuming it's the 2.7L Lion TDV6 motor (might be the same/similar for the 3.0L TDV6/SDV6 motors but I'm not sure), two things to ad from me:
1. The torque spec is 10Nm. See DISCO3.CO.UK - View topic - 2.7 TDV6 LR073372 Water Outlet Assembly torque specs? for further details and the relevant sections of the workshop manual.
2. Replacement units only include two out of three of the required o-rings. LR don't offer the third individually. From what I've read for those that replace it without replacing that third o-rings either have immediate leaks or leaks that start shortly after. I'm advised that you can get the o ring from Citroen/Peugeot, part number 198171 but haven't tested that myself yet.

Originally Posted by Bru

Thanks for that people, just ordered the o ring set.

For anyone else, for the 2.7L TDV6 motor the part numbers are:
Rear 1316152 - two required
Front LR008353
Again, not sure if the same or different for other T/SDV6 variants.

Today.... whilst doing alternator.

Originally Posted by Tombie

Today.... whilst doing alternator.

Nice. Who makes and how much?

I would assume the only likely failure point on that could be the o-rings. As mentioned above one of the three is available from Peugoet/Citroen spare parts. Is there a replacement source for the other two if ever needed?

Originally Posted by twr7cx

Nice. Who makes and how much?

I would assume the only likely failure point on that could be the o-rings. As mentioned above one of the three is available from Peugoet/Citroen spare parts. Is there a replacement source for the other two if ever needed?

The billet unit has 4 seals.

A BS211 Viton on the Cooler
2 custom jobs - available as spares from LR etc on the bottom outlets
1 larger print between the 2 pieces that I haven’t measured. Will be a standard size.

[QUOTE=Tombie;2958773]Today.... whilst doing alternator.

[/QUOTE
Tombie, is that white paint on the vacuum hose into the block behind your new billet coolant outlet or is the outer sheath damaged?

Originally Posted by twr7cx

Replacement units only include two out of three of the required o-rings. LR don't offer the third individually. From what I've read for those that replace it without replacing that third o-rings either have immediate leaks or leaks that start shortly after. I'm advised that you can get the o ring from Citroen/Peugeot, part number 198171

Or buy o-ring together with the outlet from AllFourx4 Spares:
https://www.allfourx4.com.au/epages/...ts/LR073372KIT
Kit; LR073372 plus Oil Cooler O-Ring

Cheers,
Scott

[QUOTE=Eric SDV6SE;2958822]

Originally Posted by Tombie

Today.... whilst doing alternator.

[/QUOTE
Tombie, is that white paint on the vacuum hose into the block behind your new billet coolant outlet or is the outer sheath damaged?

White paint marker

Originally Posted by Tombie

The billet unit has 4 seals.

A BS211 Viton on the Cooler

Is that a seal between the water outlet and the engine oil cooler setup? I haven't worked on the TDV6 other than a basic oil change service so not overly familiar with how it is all setup and laid out.
This might be the Citroen/Peugeot, part number 198171 o-ring then? It would be much easier to get a generic viton BS211 than going to Peugoet/Citroen spare parts. I assume that the same seal would be used between the billet unit and plastic so BS211 would also work with the genuine plastic units too when replacing.

Originally Posted by Tombie

2 custom jobs - available as spares from LR etc on the bottom outlets

I believe that these are Land Rover part number 1341370 - two required.


Did you go with the Axiom Accessories/AX4 Engineered unit? TDV6 TOP WATER OUTLET REPLACEMENT | AX4 Engineered
For some reason they're offering it for $54.00 cheaper through their eBay store than their own website Land Rover Discovery Water Manifold Upgrade - Prevent rapid engine failure | eBay - $595.00 vs $649.00
Triumph Rover Spartes also offer one for $595.00 - Land Rover Discovery Water Manifold Upgrade - Prevent rapid engine failure | eBay

They look like a nice bit of kit. It's a pit that they're ten times more expensive than a replacement genuine Land Rover plastic unit.


I assume those two open pipes above are where the throttle body outlets to? Does that mean that two 1316152 rear throttle body seals and one LR008353 front throttle body seal are also required for this replacement job?