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  1. Yes, this is correct. Actually, it is not odd. There is a fixed displacement vane pump inside the VP44 injection pump. This vane pump rotates at the same rpm as the VP44 and provides fuel flow for cooling of the VP44 as well as some other duties. The internal vane pump provides much more fuel than is being consumed by the injectors. Consequently, the fuel pressure rises internally and the excess fuel is forced over a relief valve that is set at over 100 psi (not sure of the exact pressure) and the fuel is returned to the suction side of the internal vane pump. The inlet of the 14 psi relief valve is in common with the outlet of the internal vane pump (operating at more than 100 psi), so there is always fuel flowing over the 14 psi relief valve regardless of the lift pump pressure. The primary function of the lift pump is to supply more fuel to the VP44 than the VP44 can consume for cooling and powering the engine under all operating conditions. Since lift pump is flowing more fuel to the internal vane pump than the internal vane pump can use, this flow restriction is what determines the lift pump pressure reading that you see on the lift pump pressure gauge. My VP44 and lift pump were replaced under warranty at 87,000 miles. An in-tank lift pump was installed (a factory decision). The original lift pump was still good - 12psi at idle and 7 psi at wide open throttle at 2500 rpm in 5th gear. The in-tank lift pump tested at 6 psi at idle and 3 psi at wide open throttle in 5th gear. I was not concerned. I ran the configuration this way until 250,000 miles on the odometer and then I removed the in-tank pump and installed a frame mounted FASS 95 g/hr pump with a suction screen. I did this modification to make a roadside repair possible. At this time I also added a low fuel pressure warning switch with an indicator light on the dash. I am now at 309,000 miles. The replaced VP44 has logged 222,000 miles with lift pump pressures that never see anywhere near 14 psi and most of the time considerably less. Also, I have been using the Smarty S03 programmer for the last 50,000 miles and I just replaced the OEM injectors with RV275 injectors. All of the fuel lines are stock and with the exception of a 150 micron suction screen for the lift pump, the fuel filtration system is stock. Back in 2001, Mopar-Muscle posted the results of a test using a flow meter installed on the return line after the collection point of all returning fuel flow. Below is part of a thread out of the Cummins Forum showing the results of two tests. - John Test # 1 well some of you guys ain't gonna like this , especially those led to believe (and those that believe it) ... the bigger is a MUST theory . spent a couple minutes running some tests with a DIGITAL/mechnical flow meter and a MECHNICAL fuel pressure gauge , items under test ... 2000 RAM , DD2's , DD TTPM on level 2 (??) and a HOT PE , ( all levels tested the same at WOT)factory pickup , factory lift pump , factory fuel filter housing unmodified , all banjo bolts intact and unmodified except the banjo to the input of the lift pump is replaced with a 90* swept areoquip type -6AN hose end , the bolt at the lift pump had the schrader cut off and drilled and tapped to a 1/8 npt ( for the gauge) and the banjo fittings between the lift pump and the fitler housing have been drilled to 9/32nd . again all banjo bolts are not drilled out as i have on my ram ( test conducted on the DTT RAM ) . we installed ( LaserBob is helping me and getting #2 fuel poured on his head ) a Sonnex digital flow meter ( inside ID is 5/16") in the return line back to the tank , cut in right at the trans crossmember . gph numbers are fuel returned to the tank . DD2 , DD TTPM (True Torque Power Module) FP volume idle 11 psi 18gph cruise 8 psi 24gph WOT 2 psi 30gph DD2 , TTPM , HOT PE ANY LEVEL FP volume idle 11 psi 18gph cruise 8psi 24gph WOT 0 psi 30gph yes you read that correctly , fuel pressure went to 0 and the fuel volume back to the tank did not change from WOT with 2 psi . the truck did NOT stumble , buck , spit , fart , fall on it's face , nothing , ran like all heck at 0 psi , i will note , my truck ran the same at 0 psi with the DD3's , EZ and a HOT PE . tomorrow we will install -8 lines and an HP carter pump , take flow readings in exact same spot and see what the results are . Mopar-muscle, Apr 24, 2001 Report Test # 2 well , here we go again , todays test was interesting to say the least , and we believe we have it figured out . added the carter HP 15psi 110gph pump on the frame rail next to the tank , -8 bulkhead in the bottom center of the tank , -8 line to the pump , -6 line from this pump to the inlet of an unmodified factory 2000 fuel filter housing , the rest of the system is as delievered from the factory except for a banjo bolt that had the schrader cut off and tapped to 1/8 npt for the gauge , the digital flow meter in the exact same location reading flow back to tank after the tee on the engine . with DD2 , DDTM (True Torque Power Module) psi volume idle 11. 5psi 18gph cruise 9psi 24gph WOT 6 psi 30gph with the HOT PE on any level idle 11. 5psi 18gph cruise 9psi 24gph WOT 4psi 30gph with the addition of the new pump and larger gravity fed pickup point the flow to the tank did not change , though pressure was up , the carter having an internal bypass is living with the backpressure on its output . the concenus is the VP44 is the restriction . the return line from the pump is only returning the excess fuel from the VP44's own internal pump , the more you feed it the higher the backpressure on the line to the pump . the guys with the large pumps , bigger lines and regulator mounted as close to the VP44 as possible have a large amount of the excess flow returned directly to the tank , this is not a bad thing ,( except that at a low fuel level it is possible to foam the fuel in the tank with the large amount of fuel dumping back into it from 2 sources ) but is really overkill as the vp44 uses a set amount of fuel and this is proved by the higher pressure seen with no increase in flow back to the tank . again , the higher the pressure , the lower the flow , BillW explained it perfectly on the prime loc bashing thread and no one ( including myself) understood it or tryed to test it to see if it was true . someone asked if there was a pump that was between 60 and 100 gph , again carter to the rescue , there street pump , 15 psi , about 70 gph , this pump mounted as close to the tank as possible is the best scenerio . the factory designed the system to have the least amount of restriction with the most flow given the flow characteristics of the VP44 . i have not seen the info on HVAC's 34 hp increase with fuel system mod , i will be talking to him to find out the poop on that . we also felt what happens when you have no flow , we had a low fuel level in the tank and under the bulkhead at the botom of the tank , the engine cutout , if the 0psi had no flow , we would have experienced this same bucking . next we will move the factory lift pump back in place of the carter hp pump [This message has been edited by Mopar-muscle (edited 04-26-2001). ] Mopar-muscle, Apr 25, 2001 Report
  2. Update. I bought some Cheapo Walmart special 6X9 speakers and plugged them in and viola, I now have sound from the front speakers all except the drivers side tweeter. I left the amps intact and just zip tied them to the new speakers.
  3. Since all fluid is never drained unless the trans gets rebuilt, is it okay to mix ATF +4 with ATF+3 trans fluid that stays in the VB and TC? My truck has to get ready for a 1400 miler running with, heaven forbid....... IBMobile His coffee like burnt trans fluid, but wakes up old pliestocene fossils like me.
  4. 1 point
    Well I got the housings back this evening. The exhaust side is ceramic coated silver and the compressor housing is powder coated "titanium pearlcoat". He then masked and did "holset" in gold. We'll see how it holds up! Mods to exhaust housing: Wastegate hole drilled to 7/8" through divider and 1" milled out of flange side divider.
  5. I just did the genos cushion today, huge difference. I must be sitting 4" higher. Had to adjust the steering wheel because it was hitting my legs. So far so good
  6. Personally I like the FASS 95 GPH pumps, as they don't outflow their filters like the AD or 150 GPH pumps. 95 GPH is plenty of fuel. FASS also has standard sized filter threads, and easily added fuel heaters.
  7. I'm probably the odd man out here but I have a stock pump (carter) on my truck. My fuel pressure sets at 13-14 idle in the warmer months and 12-13 in the cold. I will drop to about 9-10 at WOT. My last VP went 252000 miles without adding and 2T although I usually ran cenex road master fuel (supposed to have additional lube). I would go to a mechanical pump if I was going to change it out. I guess for me the most important thing is to keep an eye on the pressure and make sure it meets those stock parameters. I think the VP got a bad rap early on when everybody was adding power with tuners and a marginal at best stock pump.
  8. 1 point
    I am leaning towards the resonator.
  9. I'm glad they pay you for all the heart ache with working out of town. It can be very tiring. Big cities make it more difficult just as 40 years ago I dropped out of a college because of big city complications. I Went and found me a college with cow pastures still around it. Loved the methane gas.... it were far better. Even Mopar73Man, years ago, escaped to Methane Gas Valley. Soon you'll be retired I hope Dripley before any age complications. I'm semi retired, basically work enough to stay strong and have fun b.s. with the subs. I don't think I'll ever give it up being there is a certain fun associated with low stress and that swing between work and play. I love that. I did quit smoking and I suffered getting there for sure and still dream about having a smoke of rare quality..... you know how dreams are...... but just had to quit because with age, every cig was just killing me. I'd lose the ability to work and be active if I didn't stop. I hope you can too cause I'm having a lot more fun now than before.
  10. air leak is possible. Remember the quad is using boost to tell it how much fuel to use. If the wastegate is opening then boost falls and so does fueling. You can tune the quad to overfuel, but my tunes dont typically do that.
  11. 1 point
    4” is plenty for 500-600 rwhp. A 5” just causes more drone at lower power levels. My 05 had a 4” flo-pro with a 51” Donaldson muffler. Zero, and I really mean zero, drone. That was from idle thru WOT at 400 rwhp, even up to 23K GCW. Throaty but not abnoxious, and never at a volume that disrupted anything in the cab. Most of the aftermarket diesel mufflers don’t have the attenuation or flow to match the needs of a mild-moderate 5.9. If you look at the Donaldson catalog you will realize how big a muffler needs to be to meet the flow and have proper attenuation... then you’ll realize most the popular diesel mufflers are anemic and just don’t cut the sound properly. Screaming and drone are two very different things. So does it drone or scream?
  12. I driven that stretch of highway more times than I like. Lived in Marietta for 9 years. Left back in 91 or 92. The people clock they had there had just crossed 1 million when I left. It was too crowded for me then and now there is about 3.7 million people in the greater Atlanta area. Almost as bad as working around DC. I would not go if were not for travel and living expenses. I can stay at home and work for nothing. This job is going to last about 24 weeks.
  13. I also use it as a paint remover and weed killer. We've got your friction modifiers right here.
  14. Nope. 1970... Now you are going to ask why 1973? That was the first car I own was a 1973 Dodge Charger SE. The web name came from my original email of moparman@cyberhighway.net this internet company failed and we switched to Frontier. When I did the username moparman was gone. So I used mopar1973man@frontiernet.net being it was available. Which both of these emails are now gone and now using mnelson@mopar1973man.com Yeah, I know it. Wake up in the morning feeling like I've been beaten with an ugly stick. Then take a hot shower to loosen my lower back muscles and then I'm good for the day. Now with the 20-mile bicycle ride that got the entire lower half of my body sore. Oh well, I'll keep pushing. I'm actually enjoying the bicycle rides and traveling that way. Nice way to relax once in a while.
  15. I can relate to what is happening with you. Agent Orange has reared it's ugly head for me. Prostate cancer which couldn't be found with 3 biopsies, 45 total samples, not cancerous, not precancerous. Doc says not comfortable at all with that so ordered lymph node and bone scans. Bones clear but 3 enlarged lymph nodes which she tells me only comes from the prostate. At that point surgery and some other options are off the table. I now have Doug for Kaiser Doc but mostly go through VA. I really like Doug and found he fishes some where I do although have not yet ran onto him. Now 3 1/2 years later blown through most medications in a few months instead of several years like most. Past year diagnosis terminal, prognosis 3-5 years of which some is already gone. One more pill left beside lupron shot continuation then next would be a form of chemo once very 3 weeks for who knows how long. Doug had mentioned about research through OHSU and so asked about that and was referred to them. Was #7 on a list for one but just found out did not have proper blood work markers. Waiting for another to come up later in summer maybe but continue on for now. When I met Julie (research Doc) she reiterated the diagnosis/prognosis since I told her I was a guy that wanted to know upfront. By this time it had jumped to my left femur which I thought was probably a couple spots even though she wanted to x-ray it to make sure I didn't have a break. I was like whoa, whoa, whoa, whachu talkin' 'bout Willis in my mind. I'm still fishing, working around home and doing other stuff I have always done although at much reduced speed and energy due to medication. If not for that I really would not know anything is wrong. X-ray ame back OK. Next time I saw her I asked to see what the scans looked like. Arthritis pretty much everywhere which I already knew but I was shocked to see my left femur. As soon as she turned it around I could see why she wanted x-ray last time. In probably 3/4 of the femur. Not so good. I did look Julie right in the eyes and told her I had an 8 year old grandson (9 in a few days) and for him the sun rises and sets on me. He has told me, his mother and Grandmother that he loves Poppy more anyone else in this world which I take very seriously. I then said I believe there is a God, a plan for your life, someone is watching out for you, in the power of prayer and miracles because as recently as 2010 if not for a miracle you and I would not be talking right now. So I have asked God for 10 years, 3,650 days, not for me but for Makiah or a complete healing miracle, not so much for me although I would like that, but for my unbelieving friends and relatives, they know who they are, and I am believing he will at least give me the 10 years for Makiah.
  16. I got the new check valve installed and cured that problem, holds 17 psi. at idle and 17 -18 psi at wot. next is to run this down past 1/8 tank and see if this draw straw performs better than the last
  17. A lot us are riding in the stupid boat.
  18. I had my gauge connected to the rest port off the vp44 for quite a while with no issues. If course i had a snubber. L8tr D
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