Drilling the vane pump?

[RCCUMMINS89]

I remember you talking about drillint out the fill port..... forgot about it. So when will you best testing this pump? Also does that pump have the "custom" delivery valves? Curious on if you did multiple mods or just one at a time to confirm.

[cummins12club]

Why is it that a non I/C pump makes more power In stock comparison compared to an I/C pump w just the basic pump mods

[DodgeFreak]

Larger injectors. And ive heard the dvs flow a touch more at lower rpms.

[RCCUMMINS89]

Yep.... mainly because of the larger injectors, and non i/c trucks do have a touch more timing when factory.

[cummins12club]

I have non I/C delivery valves in my I/C pump and honestly from a visual comparison of the delivery valves they look Identical I know they are supost to flow 40 more cc at rpms below 1500 at the time I was runing a 9cm exhaust housing on my hx35 and that's the only reason they were benifitial for me but still their wasn't a huge difference

[AHineman]

Non intercooled don't flow 40cc more. Some more, but not 40cc. A custom cut set can.

[cummins12club]

Hmm I believe David said 40cc more and a few other ppl on here said the same

[cummins12club]

Where can u get a custom set? David told me that our delivery valves are already full cuts

[cmann250]

non-IC dv's are by definition close to full cuts. Schied uses ag dv's in their 14mm pump and who knows what that means. Ag dv's are supposedly scarce. There could be variances in the dv's depending on application and if it was an incredible advantage, I bet someone would let the cat out of the bag. I wonder if bgilbert ever looked at the dv's in the high fuel economy/high low end torque pump he had?

If I'm reading you correctly cummins12club, just P-pump it. A P-pump will be a much quicker route to your aspirations and quite possibly cheaper too. That is unless you love the VE.

[BC847]

40CC'S AT RPMS below 1500, no more fuel or 0cc's for rpms over 2000. So if you are looking for more smoke it will help, more power it probably won't unless you run very small injectors and a turbo setup that makes full boost at 1200-1500rpm.

As is found in post #2 here: viewtopic.php?f=4&t=11537


FWIW, the VE's DVs are "Full-Cut" :

IC'ed VE (205) DV to the right . . . .



That that is cut away is referred to as the "Retraction Piston"(seen on the DV to the left). It's function is to aid/alter the closing of the DV so as to alter the closing of the injector and affect the residual pressure in the injector feed-line.

[oldestof11]

I remember you talking about drillint out the fill port..... forgot about it. So when will you best testing this pump? Also does that pump have the "custom" delivery valves? Curious on if you did multiple mods or just one at a time to confirm.

Testing is in April when the track opens. Then I will add the DVs. Look up how the VP works you you might get an idea on what I am going to try with our DVs.

[BC847]

Look up how the VP works you you might get an idea on what I am going to try with our DVs.

I'm pitiful.

Can you direct me to a link to said info?

[cummins12club]

I want to p pump but don't want to be shunned from the forum

[AHineman]

Non intercooled don't flow 40cc more. Some more, but not 40cc. A custom cut set can.

40CC'S AT RPMS below 1500, no more fuel or 0cc's for rpms over 2000. So if you are looking for more smoke it will help, more power it probably won't unless you run very small injectors and a turbo setup that makes full boost at 1200-1500rpm.

John modified the set in my pump, and they were tested by him as well as KTA on the flow bench. These were the set I was talking about, and I think the set KTA was talking about, but maybe not. I never see much boost at the rpm they are good for unless towing heavy, but they would be cool if I ever had a supercharger/turbo setup.

[oldestof11]

Look up how the VP works you you might get an idea on what I am going to try with our DVs.

I'm pitiful.

Can you direct me to a link to said info?

Going off of this:

VP44's don't have delivery valves.

http://competitiondiesel.com/forums/sho ... stcount=36

of which our own KTA later confirmed in a thread on here...

and a part in the VE manual about the DV's being for low RPM emissions.

Stupid BUT I want to see what happens. Also drilling out the holder slightly to accommodate an increase in flow at higher rpms. I remember pinning out the holder and injection lines. I remembered thinking just drilling it out slightly.