Injectors???
Diesel Bomber
Joined: Jan 2009
Posts: 3,504
Likes: 157
From: Pylesville, Maryland
The dyno mentioned earlier was a 5x.014" vco nozzle vs a 7x.010" cylindrical blind hole, both with stock pintles. They do not offer a 5 hole cylindrical blind nozzle, at least not one that is not custom machined.
I never said a 7x.010" will outflow a 5x.014". The 7x.010" will flow less but it does seem to make decent power, despite being smaller. Some testing has also been done with a set of DDP4's vs SDX 5x.014" vco with lift vs 7x.012" w/out lift. The 7 hole injectors had less haze and had a significant increase in power vs both 5x.014" nozzles. There is still much more testing to be done with various 7 hole nozzles.
I never said a 7x.010" will outflow a 5x.014". The 7x.010" will flow less but it does seem to make decent power, despite being smaller. Some testing has also been done with a set of DDP4's vs SDX 5x.014" vco with lift vs 7x.012" w/out lift. The 7 hole injectors had less haze and had a significant increase in power vs both 5x.014" nozzles. There is still much more testing to be done with various 7 hole nozzles.
Diesel Bombers Sponsor
Joined: Sep 2009
Posts: 391
Likes: 46
From: Iowa
Dynoing injectors back to back is almost a complete waste, especially when all three sets are different nozzle type and cone angle. The 7-hole Denso nozzles do work and have their place, but for big hp I don't see anything taking place of the 5-hole nozzles.
Thread Starter
|
Diesel Enthusiast
Joined: Dec 2010
Posts: 162
Likes: 3
From: West, Tx
Injectors???
Can u put a 12v cummins motor back in a 96 truck with the head and valve covers on or do you have to jack the cab up for it to fit. I took it out with the head off no problem but a tight fit.
Brandon
Brandon
Diesel Bomber
Joined: Jan 2009
Posts: 3,504
Likes: 157
From: Pylesville, Maryland
kinda off topic ... but yes you can put the motor back in with the head on, the valve cover have to be off tho. its a pain but you can do it
Diesel Enthusiast
Joined: Oct 2009
Posts: 113
Likes: 3
From: LeRoy WI
What about for a non vco nozzle larger than a 5x18 since the sac volume is larger?
Diesel Bombers Sponsor
Joined: Sep 2009
Posts: 391
Likes: 46
From: Iowa
I never cut one apart to see just how large the internal volume is, if it were 5-hole I would have. There are large sac 5-hole nozzles that are used from a few larger Cummins applications, but the intermediate disks must be modified to use them.
Diesel Enthusiast
Joined: Oct 2009
Posts: 113
Likes: 3
From: LeRoy WI
The one I cut apart was a cylindrical blind-hole design and the sac diameter is about .010" wider on the 7 hole nozzle then the 5 hole micro blind, so I had thought about using it for the larger injectors since the micro blind 5 holes have the smaller volume.
What type of modifying is done to the intermediate disks? I am trying to find some sac nozzles to use in the larger pulling applications so I am really interested in what you are comming up with. Im guessing this is the stuff you were talking about on the phone when you mentioned that no one has really done before.
What type of modifying is done to the intermediate disks? I am trying to find some sac nozzles to use in the larger pulling applications so I am really interested in what you are comming up with. Im guessing this is the stuff you were talking about on the phone when you mentioned that no one has really done before.
Diesel Bombers Sponsor
Joined: Sep 2009
Posts: 391
Likes: 46
From: Iowa
It's an 8.3L pencil nozzle, pain in the you know what, I don't like doing them since the alignment pins must be removed on the nozzle side of the disk. I am having a few nozzles printed this month, hopefully making it into production by late spring, been a long time coming.
