Reply to thread

Message: [QUOTE="Mr.BigOil, post: 1034905, member: 16235"] Doc, it was very simple. New engine, new injectors(300 cc B codes), new Melling pump, new everything. About 3 years ago(this November will be three years), Jody from DP Tuner was here LIVE tuning, 7 years straight now. Loaded a 60 tune and took it down the road. Made about 60 lbs of boost, and the low pressure gauge dropped all the way down to nothing(below 6psi reservoir pressure does that). OK, no big deal. When I get time, I'll mess with it. Fast forward approximately 12 months. Before Jody came back, I removed the Melling and installed the new OEM pump that came with the Ford Rebuild kit. Didn't change anything else....not even tuning. Did a test run with Jody, and the gauge never moved. Upon further inspection, we all figured out why(there were several guys here for LIVE tuning in the shop, can't remember all the faces/names). The why: pull the gear rotor out of the body and measure the thickness of the Melling. Then measure the OEM pump. Btw, I pointed this out to Cale@Tyrant Diesel as well. It seems they were experiencing similar issues with low pressure oil, if memory serves, it's been a few years now. I thought about designing a low pressure pump as well, after comparing the two. It would be easy, but I feel there is not enough demand. And since the OEM pump keeps up now, why bother. That's the short of it. No machine test involved. Just a real 7.3. My concerns on the galley: your pulling oil too close to the mains. If you want to try it, go for it. If I were you, I would gauge pressure at the lower galley before and after the line is installed. Besides that, there's not a lot of volume down there(small fitting). As for the turbo feed comment earlier: my primary turbo is getting oil from the same location as the secondary. Small oil lines, that don't take a lot of volume. The turbo doesn't need a ton of volume, or pressure. TARM, I took nothing you said as bashing. I just came to point out simple facts. There are hundreds of inline pumps running around. Heck, there are 4 sets just on my 7.3's. The wife's Excursion is one of my best test mules. Bought that thing with 99k. Installed pumps, and now it surpassed 234k. One of those pumps is the original HPOP. The second was an unknown core. I don't buy new for my vehicles. :o Also, I only used WOP and couple others for easy examples, as most people now of them. I could list a couple hundred customer names, but some may not approve. I miss WOP.....those guys sold a ton of pumps. Ok, I think I'm done guys. As ol Wackerjr use to say: "pick your pony and ride it, it's all good." [/QUOTE]