I'm thinking maybe my HPOP is getting/got/is weak. Part throttle power is great but under WOT the truck feels like its noseing over at about 2500rpm. I've tried the DP anywhere from the stock pos to the 140 setting and it pretty much stays the same other than the 140 pulls alot harder. lol Is this just the nature of the beast or something else? Ideas?? Thanks

 

How many Miles?, If you know anyone with a snap-on OBD computer, You can view the HPOP pressure

 

103,xxx I know someone that may have one. I'll check with him. What kind of pressure should I hope for???

 

I've seen it in a post somewhere, I'll search and maybe someone will chime in. I believe around 1500rpm and stock setting, i was getting around 3-4k psi But with my chip on and higher rpm I'm thinkin it spiked around 6k

 

No youre really off on that one.. No such possibility as 6000psi. Normal WOT without a chip is around 2600psi, and on a hot tune (120 or 140) most pumps are pulled down to 2000psi. My old stock pump pulled down to 1750 psi on the 140, now with the new reman it goes down to about 2150. With big oil and extreme ICP programs i saw 3850psi but my truck didn't like it.

 

Imagine if they did have 6000, I guess that would probably start making stuff fly apart. What exactly is big oil? is that similar to Dual HPOP's? I have been thinking about this when ever I get my tranny sorted out.

 

So its safe t say that I'd want to be somewhere around 2000psi on a hot tune? Assuming for a second that the HPOP is weak, what would be my best course of action? Upgrade to a 17*, or ..... ? Eventually I'll want to add bigger injectors and turbo

 

How big of injectors do you want to go? The 17* pump is what i have, youre not going to get much more performance out of it. I'd look into the new Pulse Pump from www.dieselsite.com, which will support anything up to 250cc (unmodified BD530).Plus, its about $1400, cheapest of all out there.

 

Here is a test procedure for HPOP evalution. I can't remeber where I got it.

Disclaimer: I have never performed this test. Someone with more experience will hopefully chime in on this tests validity.

HPOP performance test
How good or bad is your HPOP? There are 2 procedures to measure the oil pump's performance.

If you can maintain 2800+ psi of ICP, then any injector 250cc's and under will perform exceptionally well.

If you can maintain 2400psi then that's not bad, not great either.

2200psi is mediocre, and full performance from any injector will not be achieved with that HPOP, though power WILL go up with nearly any injector, driveability (excessive smoke) might be an issue.

If you cannot maintain 1900psi, you might seriously consider a new or aftermarket HPOP. Nearly any larger injector is going to make the truck feel sluggish, and smoke excessively.

Procedure 1:

If you have access to a scantool, hook it up to the trucks OBD connector, and go to the "datastream"...scroll through the sensor values, until you find ICP (or injection control pressure)...this is your HPOP's "oil pressure".

***NOTE*** If you are running any kind of "box" such as the "Edge EZ" or the "Banks Six Gun" you either have to remove the aftermarket jumper harness/plug at the ICP sensor, and reconnect the factory harness by itself. If you are running a home made "10k mod", etc...which plugs/taps into the ICP sensor wires (or connector pins), you will have to remove it as well, or proceed with getting the parts together to run the mechanical gauge, as the scantool will not receive accurate data from the ICP sensor if its signal is being modified from any one of thes "ICP foolers".

To test the HPOP's output, you will be looking on the scantool for the line labeled "ICP" and it's units should be in psi not volts. Some scantools, AE is one. measure ICP in kPa (kilopascals) which you can convert to psi after you take your measurement in kPa.

1kpa = 0.145psi. kPa times .145 = psi. As an example 19,310kPa multiplied by 0.145 = 2800 psi

Put your chip in its' highest setting, and go out on the interstate (while having someone watch the ICP value on the datastream) and start at about 60mph...

FLOOR the pedal, and stay in it, 100% from ~60-90mph...what you're likely to see (on the scantool) is that the ICP will spike up rather quickly, to 2800-3000psi or so, and then the longer you stay in the pedal...the ICP will slowly drop and drop and drop...the ICP will eventually stabilize (stop dropping).

WHERE the ICP levels off can be some indication as to the condition of your HPOP.

If your truck can maintain 2800+psi then you are one of the FEW folks that have a terrific HPOP.

I would estimate that 90% of the Power Strokes can only maintain ~2200(+/- 200)psi of HPOP pressure, or ICP...5% are above 2600, the other 5% are below 1900psi...

To repeat: If you can maintain 2800+ psi of ICP, then any injector 250cc's and under will perform exceptionally well.

If you can maintain 2400psi then that's not bad, not great either.

2200psi is mediocre, and full performance from any injector will not be achieved with that HPOP, though power WILL go up with nearly any injector, driveability (excessive smoke) might be an issue.

If you cannot maintain 1900psi, you might seriously consider a new or aftermarket HPOP. Nearly any larger injector is going to make the truck feel sluggish, and smoke excessively.

Procedure 2

If you don't have access to a scantool, then go to your local hydraulic supply house, and have them make you up a mechanical gauge. You might spend $60 or so on high pressure hose, fittings, and a quality 0-3500psi liquid filled gauge....but having this hose available for future diagnostics might be more valuable than you think.

The hose which you will need will need to be about 40" long, rated for (minimum) 3000psi working pressure (12k psi burst rating!) with the gauge on one end, and a #6 female JIC swivel fitting crimped onto the other.

You will also need an individual fitting to screw into the head to go from the head to the hose.

This single fitting will be a 90degree fitting # 5 "male boss" (sometimes called # 5 o-ring) on one end of the 90, and a # 6 male JIC on the other end of the 90. Our local hydraulic shop would label such a fitting as 5MB-6MJ90

"JIC" is nothing special...it's just 'hydraulic talk' for a 37degree flare fitting...standard hydraulic stuff here...nothing rare by any stretch.

Looking at the top of (either) cylinder head, you'll see the factory stainless braided oil lines (one to each head) then you'll see a few bronze colored plugs... (Engine off, of course) Using a 5/8" wrench, remove any one of the bronze plugs, and install the 90deg fitting into the hole. (save the plug for reinstallation , after testing). and the O-rings are reusable, unless brittle, cracked, etc...

The single 90deg fitting will have a "jamb nut" on the O-ring side...screw the fitting into the head, "aiming" the 90 away from the turbo, intercooler pipes, etc...and then tighten the jamb nut, to "squish" the O-ring also locking the 90 from "spinning" around as you attach the swivel end of the hose to the 90. No sealants, loctite, or teflon tape are needed on "JIC" or O-ring fittings...and don't overtighten them...usually about 180degrees with a wrench past finger tight...check for leaks prior to getting too far from home...

Run the hose, away from moving parts, electrically conductive junk (like batteries, glow plug relay, starter relays, etc) ..and just route the hose up through the cowl toward the windshield...for short term testing purposes, we just lay the gauge up under a windsheild wiper, and go drive...testing it just like I described previously...chip in the highest setting, floor the truck, etc....

To repeat again: If you can maintain 2800+ psi of ICP, then any injector 250cc's and under will perform exceptionally well.

If you can maintain 2400psi then that's not bad, not great either.

2200psi is mediocre, and full performance from any injector will not be achieved with that HPOP, though power WILL go up with nearly any injector, driveability (excessive smoke) might be an issue.

If you cannot maintain 1900psi, you might seriously consider a new or aftermarket HPOP. Nearly any larger injector is going to make the truck feel sluggish, and smoke excessively.

 

Not sure yet. I don't plan on getting crazy with it, maybe a set of 100 horse injectors with the D66 turbo.

 

Thanks for the info PaysonPSD. That will be a big help!

 

That procedure looks like it comes from Swamps. I have done this. I tried mine in the stock and highest setting to see the difference. About 2750 maintained on stock and a tick under 2300 give or take in the 120 race.

Watch for traffic and laws when you do it. You have to stay in the throttle for a bit to see where it levels off after it spikes.

 

Mike,

I assume you used AE for testing.

 

Affirmitive.

 

I see you escaped lastnights destruction. That's a real mess between Nashville and Louisville.

Glad to see you on here.