There is a kit to put a P71 pump on common rail 24 valve engine. The advantage is that the bottom end is stronger and with the P71 pump and late 12 valve head you can change out the injectors and pump parts to create 2500 HP. Will need special head bolts and two turbos.
Do you plan to share any of this or are you hoping to market the information and sell the knowledge? Either way, the vp/p7100 crowd has several including myself that have always been interested and have a fair amount of background/R&D with regards to tuning. I’m very interested, please keep us updated. Would love to see this shared through the community and I have a feeling there’s quite a few out there that could help you along the way. Best regards.
This would be cool but a first gen rotary pump is much easier to swap in all you need to do is increase the thread length of the injection lines with a fitting added on get your 12v timing cover and cam slap it in done might be more to it but that's what a guy I know did
Hi Zach, I was thinking about the h pump. Just a suggestion, set the timing rack first then the fuel rack as an offset. Here's why, say you need 10 degrees of fuel injection to idle. If you advance the timing from say 15 to 18 degrees you are now injecting for 13 degrees and engine speeds up hard. You need to move the fuel rack to remove fuel so subtract the timing advance from the fuel rack. Power then becomes an offset added to the difference of timing rack to fuel rack. Void governor blah{} Int setpoint = 800; So offset = tps_scaled + ((RPM - setpoint) * kp.) + calib_balance; Where kp is the portional error gain coefficient. times 3 or divide by 2 Whatever depends on the rack controller sensitivity. Calibration balance is some number you work out where the rack positions will actually run. You can add a second term called I. To integrate the error to it can help. Look up PID controller.
Hi Ray, thanks for reaching out. I reached out a while ago on one of your VP44 videos. Regarding the timing thing, it operates independently from quantity control on this pump. The plunger rotation dictates quantity output and control sleeve position changes timing. There is a little bit of a change in rate of injection as the control sleeve slides which changes efficiency at idle but the PID controller compensates for that pretty well. Any progress on the VP44 project?
@@ZachU812 The Vp 44 controller is done and has been working for a couple months. I need a new design now that is sealed up in a housing. I already found out if it gets wet your stuck there. It really needs to know coolant temperature for better idle and starts but I'm out of ADC channels. I'm working on my ECM now.
@@raym5562 Sounds like it's getting there! I had the same discovery regarding coolant temperature for starting and idle quality with this H pump controller, it makes a big difference when you can compensate for it. Let me know if you're planning to sell or release your controller, I'd love another VP44 project to mess around with. Would be helpful for running them on the pump bench too.
What is the timing sweep on that pump? I’ve also been working on engineering a solution to the static timing issue of the p-pump. I have decided to go with a hydraulic gear advance setup similar to v-tech or vvt though.
Better off putting a rotary pump off a first gen on your 24 valve all you need to do is lengthen the injection line fittings with another longer threaded fitting very simple get your 12 valve timing cover and slap it together done
@Cameron Nalley lol it's also way cheaper than doing a ppump swap and then it's mechanical everyone I tell this to acts like it's the dumbest thing ever when in reality it's very smart
