CR injector in a 12 valve ?

COMP461

COMP461

Comp Diesel Sponsor
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Apr 23, 2006
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Sound crazy , but there is a lot going for the 12 valve head , I still like the 24 valve for the street , , but some of the heads I’ve seen Greg Do lately have sick flow numbers . There are all out , one off heads with a lot of really trick valve train parts ,
This line of thought started when I started eyeing Dmax injectors for the VW 2 valve TDI , and use a Standalone EDC 16 computer, as soon as its up for 6 cylinder uses as well, it would work to run the injectors.
This is just a what if , but with a lot of already in place 12 valve pullers , and the new fuel systems capable of flowing enough fuel to go head to head with the biggest billet pumps.
 
COMP461 said:
and the new fuel systems capable of flowing enough fuel to go head to head with the biggest billet pumps.
Click to expand...

Your kidding right? So you have a common rail that can go head to head with this?
 

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So your wanting to put a CR fuel system on to a 12v and use a stand alone ecm to control it? Why wouldn't you just use a CR fuel system on a CR and use the stand alone unit on it? Seems easier to me. What does a 12v have to offer that a CR doesnt?

Or you trying to use the p-pump to feed the injectors and use the stand alone unit to control the injectors. Assuming that the CR injectors can flow more and atomize better than a 12v injector can.
 
I still will put the money down on the 24V head. It isn't about just having good peak numbers.
 
BgBlDodge said:
So your wanting to put a CR fuel system on to a 12v and use a stand alone ecm to control it? Why wouldn't you just use a CR fuel system on a CR and use the stand alone unit on it? Seems easier to me. What does a 12v have to offer that a CR doesnt?
Click to expand...

Did you miss the part where he stated that he likes the flow numbers he is seeing from the 12v heads?


BgBlDodge said:
Or you trying to use the p-pump to feed the injectors and use the stand alone unit to control the injectors. Assuming that the CR injectors can flow more and atomize better than a 12v injector can.
Click to expand...

How would that work?

The CR system would need to be used as a whole IMHO.
 
No. I saw that part. Just wondering what else a 12v head has to offer over a CR other than flow numbers that would warrant such a drastic change.

And I have no idea how it would work, just trying to think off the wall.
 
the Chinese 12 valve head manufactures are offering everyone the better port head castings, doesn’t matter who took it over to them, its that they are some of the best copiers in the world , that and slave labor .. I talked to them about some castings with out water jackets like the inline heads I got for Chevy a few years back, They told me that they were doing big port heads , with smaller water jackets , “ ported as cast” casting , and they have several people that had spoken for a good lot amount of them. .

But my thought are that the 24 valve head offers a lot better average flow numbers for all but the, drag it to the line , and drag it back to the pits puller in modified .
The central injection location is critical as well, , But what I am thinking about is the higher hp type pullers . . .

The 12 valve unlimited cylinder head at this point offers ports that work with individual runners , the back side of the runners can be wielded to open up the port , and on a 6.7 block its will flow big numbers .
The injector location is not optimal ., but just as in some of the big drag racing classes , simple and rugged works .
The gains that are being made in CR injection standalone is that there will be a lot of then coming from every direction.

This is not something I would do , and its not the way to go in drag racing , but its just a thought
 
Greg- The P-pump is still and for awhile, will remain KING.

When you have a bad arse P-pump and you need more fuel, you step up to a Sigma or custom billet Sigma based designed injection pump....

I could put a VP44 pumped engine in my tube truck and have the fastest vp in the country- doesnt mean I want to. I'll stick with the P-daddy. . . . :evil
 
COMP461 said:
and the new fuel systems capable of flowing enough fuel to go head to head with the biggest billet pumps.
Click to expand...

I know I'm just a dumb redneck that works on these dinosaur p-pumps day in and day out, but I have a really hard time believing that common rail injection is anywhere close to the power possible with 30 year old technology.

Anybody have any documented flow numbers on what these new cp pumps will do?

sorry if this is a rant, but I think the common rail guys should put some of their wishing effort into design effort so maybe some day they can rule over the almighty and really stinkin' old p-pumps *bdh*

Just out of fairness, I'll leave the sigma and billet pumps out of this one, cause I don't think the 14mm p-pumps have been surpassed by common rail yet...so I really doubt the 16, 18, and bigger plungers have anything to be scared of
 
I just wonder if the CR system is capable of sustaining the high pressures needed to fill injectors that flow the same as those on a 12V/sigma setup.

I' imagine that the flow needs would be insane.
 
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