Thread: SDV6 reliability

No issues with my 2011 L320 SDV6 SE.
Car has now been replaced with a 2017 L494 SE but with the TDV6 motor.
As the car is 400KG lighter than the L320 I don't miss the loss of the second turbo.
Performance of the TDV6 feels better if anything due to the lighter car weight and eight speed gearbox.
A plus is that and I have one less turbo and associated control systems to worry about!
Regards
Barry

Originally Posted by Barryp

No issues with my 2011 L320 SDV6 SE.
Car has now been replaced with a 2017 L494 SE but with the TDV6 motor.
As the car is 400KG lighter than the L320 I don't miss the loss of the second turbo.
Performance of the TDV6 feels better if anything due to the lighter car weight and eight speed gearbox.
A plus is that and I have one less turbo and associated control systems to worry about!
Regards
Barry

Barry, the TDv6 in the L494 has the same output as the SDV6 on the L320 (+ 10KW for the L494). So with the L494 being lighter you have a much more nimble vehicle. Also, all versions of the diesel V6 have two sequential turbos. That's why you have that massive amount of torque available virtually from idle.

Interesting that the workshop manual only shows one turbo on L494 TDV6 and when I have a look I can't see one where it was on my L320 SDV6.
Totally different EGR and turbo system on the TDV6 from what I can see on mine and in the manual.
Regards
Barry

TDV6 range_rover_sport.jpgSDV6 range_rover_sport.jpg

Pictures L494 TDV6 on the left and L494 SDV6 on the right.
Small hole above the exhaust on the TDV6 is the new style low pressure EGR system that draws cooler exhaust from back near the DPF, SDV6 still uses the high pressure EGR system that draws exhaust from near the turbos on that engine.
Note nothing under the right hand manifold on the TDV6. I hope this helps.
Regards
Barry

Yep! That exhaust gas is going to be so much cooler! Still have issues with understanding how you can put dirty air into an engine, and profess to make it run cleaner.
Same as back in the '70s when the anti-pollution stuff first came in. You set up an engine to burn more fuel, to produce less power, and call it a "cleaner" engine!

Originally Posted by Barryp

TDV6 range_rover_sport.jpgSDV6 range_rover_sport.jpg

Pictures L494 TDV6 on the left and L494 SDV6 on the right.
Small hole above the exhaust on the TDV6 is the new style low pressure EGR system that draws cooler exhaust from back near the DPF, SDV6 still uses the high pressure EGR system that draws exhaust from near the turbos on that engine.
Note nothing under the right hand manifold on the TDV6. I hope this helps.
Regards
Barry

Thanks for that. Interesting change. Never assume anything I think they say. I'll have to have a closer look myself. Even the 155KW TDV6 of discos past have two turbos.

Originally Posted by donh54

Yep! That exhaust gas is going to be so much cooler! Still have issues with understanding how you can put dirty air into an engine, and profess to make it run cleaner.
Same as back in the '70s when the anti-pollution stuff first came in. You set up an engine to burn more fuel, to produce less power, and call it a "cleaner" engine!

Defies all logic doesn't it?

I have a 2014 TDV6 which has twin turbos. They have changed since. I wonder what the turbo lag is like with the new versions, mine can be a pain in the backside particularly when trying to filter along gently in slow traffic.
Cheers, Simmo