I think I own of the earliest D2's built. - Land Rover Forums : Land Rover and Range Rover Forum
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post #1 of 25 (permalink) Old 01-20-2019, 09:24 AM Thread Starter
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I think I own of the earliest D2's built.

My D2 was built 05/1999. No Secondary Air.
When were the first D2's V8's sold in the states? Was it in mid 1998 or early 1999?
Thanks,
Dave

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post #2 of 25 (permalink) Old 01-20-2019, 10:31 AM
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Where do you look to see the build date?
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post #3 of 25 (permalink) Old 01-20-2019, 06:33 PM Thread Starter
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Originally Posted by tyl604 View Post
Where do you look to see the build date?
The sticker on the drivers door that has the Vin# on the top of the sticker it has the built date.
Dave

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Present Land Rovers
1999 LR Disco II SD7 White 150K miles 'The Beach Boy' (PR truck)
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2005 LR3/ D3 SE 4.4 Bonatti 'The Rhino'
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(my NYC LR3)
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Past Land Rovers
1999 LR Disco II SD Niagara Grey 'Old Rhino' 200K+ miles (Sold)
1991 Range Rover Classic Green 'The Turtle' 200K+ miles (Sold)
1988 Range Rover Classic White 'The Rust Bucket' (Sold)
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post #4 of 25 (permalink) Old 01-21-2019, 04:03 AM
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Interesting; will check mine.

Thx.
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post #5 of 25 (permalink) Old 01-21-2019, 04:46 AM Thread Starter
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Originally Posted by tyl604 View Post
Interesting; will check mine.

Thx.
Wondering if the first US V8's were shipped in early 1999 or late 98? would mean better blocks maybe. Since the UK had mainly diesels.
Dave

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Present Land Rovers
1999 LR Disco II SD7 White 150K miles 'The Beach Boy' (PR truck)
2005 LR3/ D3 SE 4.4 Bonatti 'Fancy Professor' (my girl's LA LR3)
2005 LR3/ D3 SE 4.4 Bonatti 'The Rhino'
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(my NYC LR3)
De-tangoed Headlights, LR4 Style Grille, Dueler Alenza HL 255/55/19

Past Land Rovers
1999 LR Disco II SD Niagara Grey 'Old Rhino' 200K+ miles (Sold)
1991 Range Rover Classic Green 'The Turtle' 200K+ miles (Sold)
1988 Range Rover Classic White 'The Rust Bucket' (Sold)
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post #6 of 25 (permalink) Old 01-21-2019, 05:41 AM
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Originally Posted by SafariDave View Post
would mean better blocks maybe.
Dave
It was the early blocks that had issues, not the later ones.
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post #7 of 25 (permalink) Old 01-21-2019, 09:01 AM Thread Starter
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Originally Posted by p76rangie View Post
It was the early blocks that had issues, not the later ones.
I have not seen a late 4.6 from 2003/04 at any of the LR Indy garages I have been to that did not have a cracked block or a slipped sleeve. The 1999 D2 I had before this one I drove it till it had over 2000K without slipping a sleeve. I think its a mix bag when it comes to the blocks.
https://www.thesammon.com/buyers-gui...ines/rover/v8/
Dave

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Present Land Rovers
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2005 LR3/ D3 SE 4.4 Bonatti 'Fancy Professor' (my girl's LA LR3)
2005 LR3/ D3 SE 4.4 Bonatti 'The Rhino'
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(my NYC LR3)
De-tangoed Headlights, LR4 Style Grille, Dueler Alenza HL 255/55/19

Past Land Rovers
1999 LR Disco II SD Niagara Grey 'Old Rhino' 200K+ miles (Sold)
1991 Range Rover Classic Green 'The Turtle' 200K+ miles (Sold)
1988 Range Rover Classic White 'The Rust Bucket' (Sold)

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post #8 of 25 (permalink) Old 01-21-2019, 11:15 AM
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There has been lots of discussion over the years, early vs late , 3.9vs 4.0 and 4.0 vs 4.6,
Poor cast,poor mould, worn tooling etc.
I would agree that I have seen numerous 03/04s gone bad (not disassembled but suspected block issues.
Is it the engine OR is it abused improperly maintained, inexpensive trucks.
Could easily argue that they did NOT die of natural causes.
They were likely MURDERED😉

Happy Happy Happy

2002 D2 se7 6 seater . complete engine rebuild with flanged liners , 2 inch lift, terrafirma shocks, LT 275/65r18 Cooper stt tires, d1 modified front bumper, safety devices rack, 30" l.e.d. Light bar
2004 D2 se5 (sold)
2001 D2 se5 (parts truck)
2000 D2 se7 (retired)
1997 D1 (sold)
1957 Series 1 88" future projet
2006 Suburu legacy outback (gets me around when the disco is not)
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post #9 of 25 (permalink) Old 01-21-2019, 04:00 PM Thread Starter
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LR did bore further the blocks for the 3.9/4.0/4.6 to get more power out of them. I did read that some think that the 4.6 blocks put on the 03/04's were the ones they did not put on the RRP38's. I think that the boring further of the blocks bag machines doing the job, plus the trucks running so warm to pass inspection and adding the extra power is what has made them go boom! I guess at least the 4.0 does not have to work so hard as the 4.6 and by the time the 2003's came those engines were machined worst.
Dave.

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Present Land Rovers
1999 LR Disco II SD7 White 150K miles 'The Beach Boy' (PR truck)
2005 LR3/ D3 SE 4.4 Bonatti 'Fancy Professor' (my girl's LA LR3)
2005 LR3/ D3 SE 4.4 Bonatti 'The Rhino'
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(my NYC LR3)
De-tangoed Headlights, LR4 Style Grille, Dueler Alenza HL 255/55/19

Past Land Rovers
1999 LR Disco II SD Niagara Grey 'Old Rhino' 200K+ miles (Sold)
1991 Range Rover Classic Green 'The Turtle' 200K+ miles (Sold)
1988 Range Rover Classic White 'The Rust Bucket' (Sold)
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post #10 of 25 (permalink) Old 01-21-2019, 05:18 PM
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The early blocks were not tested or graded. All the later blocks were tested and only the best blocks were used for 4.6 motors.
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post #11 of 25 (permalink) Old 01-21-2019, 05:49 PM
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Just to clarify
All Thor engines were the same bore (same pistons) crankshaft is the only bottom end difference between a 4.0 & 4.6

Happy Happy Happy

2002 D2 se7 6 seater . complete engine rebuild with flanged liners , 2 inch lift, terrafirma shocks, LT 275/65r18 Cooper stt tires, d1 modified front bumper, safety devices rack, 30" l.e.d. Light bar
2004 D2 se5 (sold)
2001 D2 se5 (parts truck)
2000 D2 se7 (retired)
1997 D1 (sold)
1957 Series 1 88" future projet
2006 Suburu legacy outback (gets me around when the disco is not)
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post #12 of 25 (permalink) Old 01-21-2019, 07:00 PM Thread Starter
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Originally Posted by redtruck12 View Post
Just to clarify
All Thor engines were the same bore (same pistons) crankshaft is the only bottom end difference between a 4.0 & 4.6
Yes, you are right, I just think that that crank made the engine work harder to get more power and probably making the block hotter than the 4.0.
Dave

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Present Land Rovers
1999 LR Disco II SD7 White 150K miles 'The Beach Boy' (PR truck)
2005 LR3/ D3 SE 4.4 Bonatti 'Fancy Professor' (my girl's LA LR3)
2005 LR3/ D3 SE 4.4 Bonatti 'The Rhino'
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(my NYC LR3)
De-tangoed Headlights, LR4 Style Grille, Dueler Alenza HL 255/55/19

Past Land Rovers
1999 LR Disco II SD Niagara Grey 'Old Rhino' 200K+ miles (Sold)
1991 Range Rover Classic Green 'The Turtle' 200K+ miles (Sold)
1988 Range Rover Classic White 'The Rust Bucket' (Sold)
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post #13 of 25 (permalink) Old 01-21-2019, 07:03 PM Thread Starter
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Originally Posted by p76rangie View Post
It was the early blocks that had issues, not the later ones.
I have a feeling that maybe for the P38's, but not for the 03/04 Discoverys, by 03-04 the Range Rover were using a BMW engine.
Dave

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Present Land Rovers
1999 LR Disco II SD7 White 150K miles 'The Beach Boy' (PR truck)
2005 LR3/ D3 SE 4.4 Bonatti 'Fancy Professor' (my girl's LA LR3)
2005 LR3/ D3 SE 4.4 Bonatti 'The Rhino'
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(my NYC LR3)
De-tangoed Headlights, LR4 Style Grille, Dueler Alenza HL 255/55/19

Past Land Rovers
1999 LR Disco II SD Niagara Grey 'Old Rhino' 200K+ miles (Sold)
1991 Range Rover Classic Green 'The Turtle' 200K+ miles (Sold)
1988 Range Rover Classic White 'The Rust Bucket' (Sold)
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post #14 of 25 (permalink) Old 01-21-2019, 07:59 PM
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I would not be surprised if they were trying to use up inventory knowing that that engine line was likely near the end of its run. Also not likely wanting to put money into retooling that wouldn’t be in use long enough for a good return on investment.
That being said I’m sure they tried to use up the best of what they had ( blocks being graded)
As for which engines are most prone to a block failure... I’m pretty confident that very few properly / well maintained engines had block failures.
When the do they likely overheated. Same result as a head gasket failure or other cooling system failure.
My 02 (current truck) had a water pump fail (previous owner). Local LR dealer warned him of the possibility of engine damage. He ended up walking away from it. Soon after I bought the truck for a song ( I knew the history but super clean California truck in Canada 🇨🇦 is not something to pass up).
Put a water pump on her and all was good for about 8 months. THEN.......
Misfire, air in coolant etc😐 running hot, all the usual signs.
I tore it down hoping for a head gasket failure, but no definitive answer was found, heads checked out too. All that leaves is a block issue ( slipped liner)
So what caused it????
Bad block?
Poor quality control?
Dexcool?
Stock thermostat?
Poor maintenance?
My money 💰 is on poor maintenance and little to no warning systems or fail safe when the overheat ( water pump failure) happened.
I guess you never really know unless you have had since new, could be a gamble.
I’m not going to blame the year of the engine.

Cost me an engine rebuild, about $5000 plus a bunch of my time.
I have no regrets. Love the truck, drive it every day and every where with confidence.
Could likely sell her and still not loose much ( but never will).
Excuse my rambling

Happy Happy Happy

2002 D2 se7 6 seater . complete engine rebuild with flanged liners , 2 inch lift, terrafirma shocks, LT 275/65r18 Cooper stt tires, d1 modified front bumper, safety devices rack, 30" l.e.d. Light bar
2004 D2 se5 (sold)
2001 D2 se5 (parts truck)
2000 D2 se7 (retired)
1997 D1 (sold)
1957 Series 1 88" future projet
2006 Suburu legacy outback (gets me around when the disco is not)
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post #15 of 25 (permalink) Old 01-22-2019, 12:40 AM
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Originally Posted by redtruck12 View Post
Just to clarify
All Thor engines were the same bore (same pistons) crankshaft is the only bottom end difference between a 4.0 & 4.6
Pistons, etc were also different. Basically the only shared component in the bottom end was the block. Even the sump pans were different.
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