Discovery Fuel Rail Question
#1
Discovery Fuel Rail Question
Ok, so there seem to be a lot of people who have upgraded the injectors on their Discovery 1s with the Ford 19 lb injectors. I was planning to do the same to my Discovery 2, but I ran into a problem. The injectors are too long. Once you got one side seated, the opposite side would hit the valve cover. I was wondering if it would be possible to fit a Discovery 1 or a P38 fuel rail to a Discovery 2 to accommodate the longer injectors? Has anyone tried anything like this?
Thanks!
Thanks!
Last edited by Alex_M; 09-26-2014 at 05:36 PM.
#2
I was wondering how those injectors you said you were putting in would work. I guess we now know.
I am not aware of anyone using any other injectors in there D2 besides the stock bosch. In my opinion the injectors in the D2 are a far better design then the D1 so there really is no need to change them.
And I'll need to do some research on the fuel rail question to better answer. I honestly have no idea what the D1 fuel rail even looks like. You might want to e-mail a member named paul grant. He sells used land rover parts and he might be able to tell you if they and compatible.
I am not aware of anyone using any other injectors in there D2 besides the stock bosch. In my opinion the injectors in the D2 are a far better design then the D1 so there really is no need to change them.
And I'll need to do some research on the fuel rail question to better answer. I honestly have no idea what the D1 fuel rail even looks like. You might want to e-mail a member named paul grant. He sells used land rover parts and he might be able to tell you if they and compatible.
#3
Does anyone know what the stock D2 injectors are rated at? Im did some searching and found replacement injectors for the D2 bosch err6600 at 18.4 lbs hr. If thats the case then your going through all this work for .5lb improvement which you wont notice. I would suggest trying the ford 21lb hr injectors from the 4.0 liter V6. One major side effect is that the mass air flow will have to be calibrated for the larger injectors. On the fords I used to drill out the sample tube for the larger injector and your good to go. The disco has a more sensitive maf. I would like to hear if anyone else has upgraded the D2 injectors and what mods where done to allow to work
#4
Does anyone know what the stock D2 injectors are rated at? Im did some searching and found replacement injectors for the D2 bosch err6600 at 18.4 lbs hr. If thats the case then your going through all this work for .5lb improvement which you wont notice. I would suggest trying the ford 21lb hr injectors from the 4.0 liter V6. One major side effect is that the mass air flow will have to be calibrated for the larger injectors. On the fords I used to drill out the sample tube for the larger injector and your good to go. The disco has a more sensitive maf. I would like to hear if anyone else has upgraded the D2 injectors and what mods where done to allow to work
#5
#6
I just ran cleaner through mine and they are a 4 hole. You can see the 4 streams. I have to say, after seeing the inside on the manifold and heads on my truck the injectors are not the main thing holding it back from making more power. The inside of the casting is so confined and rough that it can't flow much air at all. Besides, I really don't see why people are so interested in trying out get more power out of these engines. Mine has plenty of power for such a heavy, boxy, ponderous truck.
#7
I just ran cleaner through mine and they are a 4 hole. You can see the 4 streams. I have to say, after seeing the inside on the manifold and heads on my truck the injectors are not the main thing holding it back from making more power. The inside of the casting is so confined and rough that it can't flow much air at all. Besides, I really don't see why people are so interested in trying out get more power out of these engines. Mine has plenty of power for such a heavy, boxy, ponderous truck.
The roughness is no problem for me anymore. Not after the port and polish
#8
It may help, but it will only get the air to the next barrier that much quicker. If you get a higher lift cam then you lose some low end which is what these trucks need so then you need to go for the next problem in the system.
#9
#10
I actually have a high torque cam which seems to be doing exceptionally, along with bleed down lifters which helped some with torque. Everything I've done to increase horsepower I've also done something to increase torque. She's probably in her final form now (with the stock engine, anyway) power train wise. Now I've got to move on to suspension work.