Cubic Inch

Straley said:
Columbus uses a 100HP stand I believe to test the sigma. At least they told me it takes 100 hp to run on my truck.

Jeremy
Click to expand...

:eek: Geeminy Chrismas, Jeremy!

BTW you made a really sweet pass at Zanesville....dang near perfect from trackside.
 
GSM-01 said:
3 phase.... Guess that means I will never build it then. I have bad enough luck with 2 phase at the box.....
Click to expand...

Just use the 5.9 you have left over after borrowing the 6.7 from the Fed Ex truck.:hehe:
 
Yes indeedy, zstroken was right.

I called CDS and they said that the rating is what each cylinder in the pump will provide in 1000 strokes. Further, they were pretty insistent that the only way to get an accurate number is to use the same injector to test it as what will be run in the engine. They said that a "500cc" pump will flow more like 750cc when run open (done by making the injector just a check valve).

So now all I gotta do is sit down and convert that to mm3 like the CR trucks so I can get an understanding of how far the CR system has to go.
 
yup...1000 cubic millimeters = 1 cubic centimeter.

Metric is handy that way.

Typically you're seeing CR fuel measured per injector shot so the numbers are much smaller. Like 1000x smaller duhherrrr :hehe:
 
so to recap...if the p-pump produces the volume and the pressure,and the CP3 only needs to put out volume to the rail. then it sounds to me that the CP3 is more efficient at what it does, and BONUS it doesnt cause as much parasidic(spelling) lose on the engine...

So twin CP3's should be enough to compete with a modded P-pump?
 
What...are people actual scared the CP might be better...? subject settled CP's WILL rule the roost!
 
What injection pressure does a hopped up P-pump put out?

I was told 18,000 psi but I didn't believe it.
 
Just to throw this out there for you guys to tear apart...I haven't been working on pumps long, but i have yet to here of a sigma pumping 2000+cc's...the only pumps i know doing that much are the billet pumps that will take up to 24mm b's and p's

the 1300cc p-pump is very possible, but takes a lot of work on the guts of the pump so that the plungers aren't smacking the bottoms of the barrels and so on...

for example, my biggest pumping p-pump i built so far is 1130 cc's...but i'm not sure which nozzles we used on the stand so i can't say how that compares to others...and nobody i know of that wants 1130 cc's buys a p-pump...:2cents

also, bringing the cubic inch part of this thread back, many of the Super Farm tractors around here that start out as 466 blocks are running between 600 and 800 cc's...one would HAVE to assume it takes some big cubes to be shooting that much fuel in...
 
Last edited:
ISBeINSIDE said:
What...are people actual scared the CP might be better...? subject settled CP's WILL rule the roost!
Click to expand...

Higher pressures will assure consistent volume. However, volume has everything to do with system capacity. Thats why the inline pumps flow more as the B&P size increases.
Just because a cp will build more pressure it does not mean it provides more volume.
Size matters.
 
Snedge said:
Higher pressures will assure consistent volume. However, volume has everything to do with system capacity. Thats why the inline pumps flow more as the B&P size increases.
Just because a cp will build more pressure it does not mean it provides more volume.
Size matters.
Click to expand...

As long as the rail pressure doesn't drop that means you have adequate supply.
 
So back to my point if, I, with twin Cp's can provide enough volume to keep my rail pressure at 25K+, I would have more potential power then a P-pump could ever produce...in theory?
 
ISBeINSIDE said:
So back to my point if, I, with twin Cp's can provide enough volume to keep my rail pressure at 25K+, I would have more potential power then a P-pump could ever produce...in theory?
Click to expand...

In theory???? In theory, Bruce Willis can fly into space and blow up an asteroid to save the earth.
In the real world this thread was started about Cubic inches. I'm not sure how large the high pressure rail and cp3's would have to be to supply an equal volume, cc wise, to even a conservatively hot rodded
p-pump?
Don't get me wrong, the cr fuel system is the cats a**. Very efficient, and most definitely the future of Diesel performance. Look what Banks did with that big block Chevy, whoops I mean Duromax.
 
Last edited:
TurboBeagler said:
What injection pressure does a hopped up P-pump put out?

I was told 18,000 psi but I didn't believe it.
Click to expand...

You are correct, max presure should be around 19,000 psi :evil
 
Snedge said:
In theory???? In theory, Bruce Willis can fly into space and blow up an asteroid to save the earth.
Click to expand...

I'm noticing a theme in all your postings today... Watch a movie did ya?:hehe:
 
GSM-01 said:
I'm noticing a theme in all your postings today... Watch a movie did ya?:hehe:
Click to expand...

:hehe: A long time ago, but I thought it was silly. I have a limited limited suspension of disbelief.
 
"Yippie Chiyah, Mother f#@ker":hehe:

Oh my bad wrong one of his movies!:doh:

But to get back to the point has anyone really done extensive testing on this subject, i.e. sonic thickness checks and cuttin up a block to see how thick the cylinder castings are, and stroker rotating assemblies? What would the cost be on such a rotating assembly!
 
ISBeINSIDE said:
But to get back to the point has anyone really done extensive testing on this subject, i.e. sonic thickness checks and cuttin up a block to see how thick the cylinder castings are, and stroker rotating assemblies? What would the cost be on such a rotating assembly!
Click to expand...

Those answers are why a fully built mod engine costs $50k+.
 
so the only thing we, with a budget, can do is utilize the components or whole 6.7l frame for further Cummins performance? And as for the duramax and the Powerstroke? Who knows?
 
You must log in or register to reply here.
Back
Top