Injector Questions
#1
Injector Questions
Im rebuilding a pre-he v12, and at the point now that im doing the top with injectors, some are working some are rusted shut.
I know the Pre-HE d-jetronic are EV1 injectors and the HE are later ones with different plugs. following the 92+ ones.
what im interested in is getting rid of as much rubber hose as i can, and was wondering if a rail from a 92+ V12 would work?? those have ZERO hoes and clip ti the rail. Different injectors i know, but are the flow rates the same.... would they even work with the older jetronic?
As of now im going to use the HE fuel rail with the hoses.
Any thoughts would be great.
I know the Pre-HE d-jetronic are EV1 injectors and the HE are later ones with different plugs. following the 92+ ones.
what im interested in is getting rid of as much rubber hose as i can, and was wondering if a rail from a 92+ V12 would work?? those have ZERO hoes and clip ti the rail. Different injectors i know, but are the flow rates the same.... would they even work with the older jetronic?
As of now im going to use the HE fuel rail with the hoses.
Any thoughts would be great.
#2
The following users liked this post:
smgdata (08-17-2018)
#3
The following users liked this post:
smgdata (08-17-2018)
#4
Just to Make sure on this.
using 92 5.3 fuel rail with the injectors and they will work? Fellow member has a 92 and i can see how its all laid out i like that there is only two rubber hoses
Having the pre-He's flow more would that cause a problem with the newer injectors flowing less now using d-jetronic?
using 92 5.3 fuel rail with the injectors and they will work? Fellow member has a 92 and i can see how its all laid out i like that there is only two rubber hoses
Having the pre-He's flow more would that cause a problem with the newer injectors flowing less now using d-jetronic?
Last edited by smgdata; 08-17-2018 at 02:58 PM.
#5
I was not aware that the later injectors use a different size O ring, I have not pulled my 5.3L injectors. I do know the 6.0L uses 14.5mm O rings
Using smaller injectors is not an issue, fuel rail pressure can be increased to increase injector flow. O ring injectors for the later 5.3L and 6.0L are the same, the 6.0L runs higher rail pressure.
Using smaller injectors is not an issue, fuel rail pressure can be increased to increase injector flow. O ring injectors for the later 5.3L and 6.0L are the same, the 6.0L runs higher rail pressure.
The following users liked this post:
smgdata (08-18-2018)
#6
UPDATE!!
I picked this up today for my pre-he build.
Im going to use the whole thing. im quite excited.
im assuming these injectors will work.
Question I have is the fuel pressure reg thats on it, will it be ok for the the d-jetronic? I don't know the psi on these.
I picked this up today for my pre-he build.
Im going to use the whole thing. im quite excited.
im assuming these injectors will work.
Question I have is the fuel pressure reg thats on it, will it be ok for the the d-jetronic? I don't know the psi on these.
Last edited by smgdata; 10-21-2018 at 07:50 PM. Reason: picture
#7
Trending Topics
#8
Is this an issue if placing higher flow injectors into an HE? Don't mean to hijack the thread but I have a set serviced by the guy in florida - 210cc average but my car is about 9 yrs newer then then the set. Are there specs on this? If you install older remans will it flood the engine?
#9
#10
Is this an issue if placing higher flow injectors into an HE? Don't mean to hijack the thread but I have a set serviced by the guy in florida - 210cc average but my car is about 9 yrs newer then then the set. Are there specs on this? If you install older remans will it flood the engine?
You do not say what spec your car is..... So the answer is it depends. 210cc is 10% more flow than stock, if your car has O2 sensors the ECU will compensate in closed loop, ie idle and light throttle cruising. If no O2 sensors then you would need to check AFR.
Bigger injectors are not a good idea unless you have significantly increased the power and the current injector duty cycle is hitting 90%. I will be using injectors with 240cc in my 6.7L V12 but I have an adjustable ECU so can tune AFR.
#11
#12
#13
That assembly will work. Daim is correct it will not have cold start injector bosses machined, but I have read numerous threads where (I think it was Grant) deleted the CSI.
You may need to swap the FPR for an adjustable one to tune AFR. But I would install it as is and check AFR first.
Also before you install the manifold I would port the head end to clean it up and remove most of the injector boss.
First pic is the ported manifold, Second is the intake port before porting, notice the rough 45° chamfer, third pic is the port after smoothing, I have opened them slightly but not much, mostly they were matched.
You may need to swap the FPR for an adjustable one to tune AFR. But I would install it as is and check AFR first.
Also before you install the manifold I would port the head end to clean it up and remove most of the injector boss.
First pic is the ported manifold, Second is the intake port before porting, notice the rough 45° chamfer, third pic is the port after smoothing, I have opened them slightly but not much, mostly they were matched.
The following users liked this post:
smgdata (10-22-2018)
#14
#15
#16
That is a 6.0L head.
It's the small things that catch you, like the different spark plug angle on the pre-HE.
That manifold is off a saloon keep the throttle body angled adaptors and make a new intake system with a pod filter inside a can.
Like this
https://www.jaguarforums.com/forum/x...es-v12-136567/
It's the small things that catch you, like the different spark plug angle on the pre-HE.
That manifold is off a saloon keep the throttle body angled adaptors and make a new intake system with a pod filter inside a can.
Like this
https://www.jaguarforums.com/forum/x...es-v12-136567/
#17
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)