Wow can you even read??? Richard clearly said 5.0L which I hate to inform you since you know it all is NOT the LR V8 found in older LR's..... Don't tell me you aren't into a pissing contest either, you come into a "Land Rover" Forum and start talking about Porsche engines, and when someone finally calls you out you resort to Youtube video's seriously?? And it might be hard for a man of your knowledge to understand this but engines aren't always designed around HP at higher RPM's.. Some are designed to have the best combo at lower RPM's for use in this thing which cars don't have called a 2 speed transfer box which completely changes the gear ratio's so if an engine is tuned around giving the best performance in specific range I dunno Off Road for example since Land Rover's are designed to be driven off road. Sorry but Jeep's are 90% mall queens these days and I see maybe 10 a year driving around that are off road worthy with scratches, trail scars, and they haven't been washed in ages. The rest are the new Cars & Coffee folks or bikers that got tired of 2 wheels and traded their Hogs in for a Jeep.

You now are acting like I said the LR V8 is special..... I NEVER said it was special. I said it WAS NOT designed for high performance and that is a fact. I don't need 40's to go far off road into the boonies... It takes a lot more than 40's to be good at off roading. It's like that old saying you can have all the $$$$$$$$$$ in the world, but it still can't buy brains..... I've seen an old rusty CJ-7 with leaf springs and some bald n cracked 33inch M/T's with an old man in his 50's out perform a 30 year old know it all in his 100K JKU with every single off road goodie you could put on it. What the old man didn't have in equipment he made up in ***** & skill. The young gun quickly got out of his element, and he had to be winched out because he had no real clue what he was doing and he didn't know his vehicle.

 

It's all about the oxygen. I may be wrong about octane meaning oxygen. I think octane meand 8 sided carbon molecule, my bad. But it's all about OXYGEN. Lead is added to race fuel to increase the octane because it bonds with oxygen to form lead oxide which increases the octane. This is common knowledge and I have sources to back it up.


Pure gasoline doesn't contain oxygen and therefore won't burn without first vaporizing the gasoline adding oxygen to it.

The trick is that when we are talking about octane we are talking about octane BOOSTERS, because oxygen is added to the fuel mixture. (see above)

So calling it octane is a misnomer. It's really an oxygenated octane.

 

I understand what whoever said about boosting up the V8's. Relax mate.

You said that Jeep/LR engines were meant to only have low TQ, not high HP... and I know that's baloney, special is just a word that I used to describe how you think that the Rover V8 in sports cars is somehow different than the Rover V8 in the discovery... it's not. An engine is an engine is an engine. They all work basically the same. People get thousands of HP from little Honda engines and there are a lot of boosted and charged Jeeps out there. I go back to Porsche to compare because that's what I know best... and Porsche has a lot more research and development at high race levels than most companies.

And, to correct you again, I think one of the users on here has a 5.2L Discovery engine that he said he really likes, or I read about that and he recommends them if your engine goes kaboom.

Please stop the theatrics.

 

The 4.0/4.6L tune is fine. Heck you can over-heat them a few times without it dying. It ONLY needs a new block "if" the block develops a crack. I've seen plenty of 03-04 D2's and even some 99-02 Range Rover's with the 4.0/4.6L run with slipped liners for 25K plus. You can have the liners pinned as well. The issue comes back to what everyone has told you. The engine was being phased out, LR/BMW/Ford DID NOT care to invest $$$$ into an engine that wasn't going to pass future emission testings. The tooling to make the engines needed to be updated, and they were NOT going to re-invent the wheel on an engine when they had the 4.2/4.4 from Jaguar which was already a proven platform. It's all about $$$$$$ and good business practices. The LR V8 and the Jeep I6 had about the same lifespan, and both were phased out due to emissions and both companies phased them within 2 years of each other. LR phased out the 4.6L in 04 and Jeep phased out the 4.0 I6 in 06.

 

And, an old stock CJ is NOT going to out wheel a built up modern Jeep, the modern Jeeps are the king of corporate-production off-road 4x4... the next step up are buggies and custom tube frame 4x4... you don't have to get upset about that, it is what it is. I still like Land Rovers for what they are.

I like old CJ's too.

 

What I posted about California law earlier is correct. California law is overly complex and hard to follow.
Seriously, if you buy even a single car, with the intent to fix it up and sell it at a profit, you need a dealers license to be legally safe, it would be hard to prove that was your motivation with one car though, especially since it was registered to you before the sale.
The 5 vehicle limit is also specified in the law, selling six or more vehicles in a year requires a dealers license. This the State may come after you if you sell six, as California wants its money even when it is not legally entitled to money.

 

You talk a lot but are mostly wrong. You need to provide proof for your claims.

The I6 got phased out because the company was sold. Modern Jeeps are mostly thinly clad Fiats now and are kind of poorly built compared to the old Jeeps. Everyone still loves the 4.0 way better than any engine and it still passes smog. They are just playing political games with Jeep, passing it around Europe to snub their noses at the USA, that's my opinion.

It's similar with Rover, it's no longer an English company, as far as I know and they pissed off most of their most loyal fan-base with the new Defender essentially being a BMW SUV.

Everyone still loves the old XJ, maybe more than they like the Wrangler.

If aluminum overheats the crystalline structure of the metal will permanently change, even if a crack doesn't develop, it will weaken the block... continued overheating is what causes the cracks, that's my conclusion so far... then the coolant boils out and it detonates and other bad stuff.

The overheating, from other sources, is due to them trying to force more HP and less emissions out of the same car parts. I've seen no proof of any worn out tooling. How would cast tooling get worn out anyway? Doesn't make sense. And the liners make up for any weakness in the cylinder walls themselves. This is why right now I am firmly in the overheating due to poor tune camp on why the 4.6 engines fail and not the 4.0 engines as often.

The Car Wizard on YouTube recommends the D1 but not the D2 due to the unreliable 4.6 engines. What's different between the two:

1. no oil cooler
2. trying to get more HP and less emissions out of the same engine with the same engine parts (makes the engine run too hot)

Those are the two big differences that I've learned about between the world of reliable Rover V8's out there in other vehicles and the Discovery 2 4.6 V8's.

What are the other differences between the 4.0 and 4.6? In those differences is where you'll find the problem and don't give me the baloney about the casting tooling wearing out in less than a decade suddenly.

Peace.

 

I know all about California law. I live in Japan but I went to law school at USC.

 

Once again I'm sorry you can't read.... I said it was setup to give you good amounts of torque at a lower RPM..... That is true with any V8 used for towing or commercial applications. Once any LR RRC/D90/D110/D1/D2/P38 gets above 4K worth of RPM's pretty much nothing happens after that except a lot of noise because it's not "tuned" for the upper RPM range. The British sports car's that sported the Rover V8 were not what I'd call Super Cars, and most of those were NOT worried about emissions or were they running the BOSCH Motronic system. Most were using carbs or the 14CUX or even the GEMS setup. That is not a fair comparison at all and not to mention a TVR8 for example maybe weighed 2,600 vs 5,000.

Good luck to you

 

I get that the Discovery/LR V8's were designed for TQ.

What's the difference between the Land Rover Discovery 2 4.6 engine and the Land Rover Discovey 1 4.0 engine other than oil cooling?