FWIW, as others have stated, it is relatively very simple to convert an EFI 4.0 to carbs and a distributor or carbs and EDIS. Personally, I wouldnt go with carbs unless I was just desperate to make it run and had a setup laying around that would cost me no more than new gaskets.
Us Triumph TR8 people have for a very long time been taking 4.0 and 4.6 Rover engines and slapping on carbs and distributors from our old 3.5 engines.
That being said, it is for ease, convenience, and is cheap. I very much prefer EFI and have adapted GM TBI and multiport 90’s era injection systems to my old TR8s. The TBI is a sort of Frankenstein but wow is it simple, reliable, fuel efficient, and cheap. Parts are in stock at Autozone, cheap. The multiport is more elegant but was a lot more work. Both are significantly simpler and more cost efficient than the factory Rover stuff. That being said, I cant imagine I would remove the factory stuff on a Discovery for either system.
For me EFI is the way to go but some prefer the simple approach. Who am I to judge? To each his own. I took out the 4.0 EFI automatic in my D1 and replaced it with a 300TDI and 5 speed. I completely elimated the electronic aspects in the process. Diesel fuel and a strong battery and it runs flawlessly. (My D1 lives in a metal Quonset hut sheltered from possible EMP effects on the side of mountain... not joking but a total coincidence. ) Considering advanced technology alone, that is a downgrade. However, I consider my old tech diesel and manual gearbox far superior.
I know there is often rude commentary here but it is nothing compared Defender Source. I own a “bastard” Santana and that alone is considered sacrilege to those folks. “What idiot would buy a Santana when they can buy a Defender in like condition for 4 times the cost???!!!” For those of you not familiar with the Land Rover Santana's, they use about 95% Land Rover parts, were assembled in Spain, and later model ones (until the late 80s’s) look like Defenders. Earlier models are near identical to Series models of the same era but have galvanized chassis. Why would anyone buy one of those??!! (Yes, sarcasm.)
Note my comments are not angry or rude. It isn’t that hard... be happy!
Us Triumph TR8 people have for a very long time been taking 4.0 and 4.6 Rover engines and slapping on carbs and distributors from our old 3.5 engines.
That being said, it is for ease, convenience, and is cheap. I very much prefer EFI and have adapted GM TBI and multiport 90’s era injection systems to my old TR8s. The TBI is a sort of Frankenstein but wow is it simple, reliable, fuel efficient, and cheap. Parts are in stock at Autozone, cheap. The multiport is more elegant but was a lot more work. Both are significantly simpler and more cost efficient than the factory Rover stuff. That being said, I cant imagine I would remove the factory stuff on a Discovery for either system.
For me EFI is the way to go but some prefer the simple approach. Who am I to judge? To each his own. I took out the 4.0 EFI automatic in my D1 and replaced it with a 300TDI and 5 speed. I completely elimated the electronic aspects in the process. Diesel fuel and a strong battery and it runs flawlessly. (My D1 lives in a metal Quonset hut sheltered from possible EMP effects on the side of mountain... not joking but a total coincidence. ) Considering advanced technology alone, that is a downgrade. However, I consider my old tech diesel and manual gearbox far superior.
I know there is often rude commentary here but it is nothing compared Defender Source. I own a “bastard” Santana and that alone is considered sacrilege to those folks. “What idiot would buy a Santana when they can buy a Defender in like condition for 4 times the cost???!!!” For those of you not familiar with the Land Rover Santana's, they use about 95% Land Rover parts, were assembled in Spain, and later model ones (until the late 80s’s) look like Defenders. Earlier models are near identical to Series models of the same era but have galvanized chassis. Why would anyone buy one of those??!! (Yes, sarcasm.)
Note my comments are not angry or rude. It isn’t that hard... be happy!
Last edited: