Thread: Jaguar Land Rover recall TDV6 engined vehicles

Originally Posted by DiscoJeffster

No one really knows but while there have been a lot, it would still have to be sub 1% given the number of vehicles sold

Originally Posted by scarry

Looking at 3.OL,ran for around 10 yrs in D4,D5,RRS.
Sales would have been around something like a generous, 25K, over that period,at a guess,at the most?

I doubt total engine failures were less than 250,over the 10yr period,and in the years once the engine was dropped.

From what i have seen,and the number that the two Indies i know are doing,that is way off the mark.Just the two of them would see more than 10 a year.

theres a user poll on another lr forum that has it at 10% for both 2.7 and 3.0 . even the d5 sdv6 are snapping still

Originally Posted by Eric SDV6SE

If its not oil starvation or related, then it must be a fault in the forging or a design issue. I agree that step down to that flange and the web thickness between #1-2 and #3-#4 does look very skinny. Then they drill an oil gallery straight throught the web part, weakening even further. Perfect stress raiser if the oil gallery has sharp corners or the material has a defect in it already.

5 main bearings instead of 7 ?

.

There is no 7 main bearing block, can't physically get 7 mains on a V6, 1 at each end and 1 between each pair of big end journals= 4.

IIRC, the TDV6 only has four mains.

Screenshot 2024-09-19 at 8.45.41 am.jpg

Not my pic. Source: Billet crank

thanks for clearing that up , id just assumed they could have used more if they were prepared to make the engine longer

Originally Posted by haydent

thanks for clearing that up , id just assumed they could have used more if they were prepared to make the engine longer

Not a whole lot of room in what is effectively two 3 cyl engines. If you look at the "thickness" of the webs it's easy to see that all you would need is a tiny flaw for the crank to fail, given the power these things can make. I reckon that billet crank is interesting.

And they did make the engine longer, in the RRS. They gave it 8 cylinders. Still believe that would be an avenue to explore if the car is a keeper. A V8 D4 would be almost perfect. But I'm ignorant of what would be involved, or availability of engines.

i have the L320 tdv8 now and its amazing, but need the higher weight cap of discovery, ive dreamed of it too Disco 4 Turbo Diesel V8