I'm know you've seen my p3000 setup before.I now have some timing notches ground into the plungers.
As for a 4cyl p7100,Tdiclub user "krdmachine" was going to build a tdi with a 4cyl p7100 when I last talked with him somewhat recently.
The notching on the plungers is for advancing the timing as rack travel increases.Really it will only be used for engine start up/warn up and staging at the dragstrip. Its a crude way of doing it however it will allow my new build to possibly start without ether and less smoke while warming up.Hopefully it will let the turbo's spool up a little earlier too.The tractor pulling crowd has been using this idea for a long time now.
Yes, I should update it soon or start a new one.The deal breaker for my new build was that I had to have some injection timing advance or not build at all.Having a dynamic timing advance would be neat however it would take some work to set it up as it will be fighting the fuel quantity that the injection pump is trying to inject.The flyweights/ramp rate and springs in most of the dynamic timing devices are engineered/tuned to the engine/fuel system.andy, you should update your thread sometime
ETA: been thinking on the inline pump thing lately, more biased toward an EDC governed MW pump made of mercedes bits with 10mm elements from a DT
but it'll likely get absolutely nowhere, the lack of timing advance is a real downer to me. Oh and before the H-pump is mentioned, any idea how the heck to control one?
I feel your pain there.
There are plenty of 4cyl VP44:s, for example in Opel, Ford and BMW. Some of 4cyl pumps are with 4 pistons. It's also quite simple to control via CAN if you know what you are doing.
Yes, it has been discussed here for at least 18 years. What has prevented a successful swap has been a relative unfamiliarity with dealing with the CAN-based computer integrated on the VP44 pump. We've long gone beyond VE pumps to PD and CR, but it would still be cool to see a working VP44 swap into a VE TDI.
Bosch Interface description / Customer data sheet sure has been helpful when dealing with it. A friend of mine made Arduino based ECU and already got the engine running. This wasn't a TDI but next we are going to test it with my ALH. Progress has been very slow lately though.
The RPM capability has nothing fundamentally to do with the VP44 itself. The Cummins is a much larger displacement engine, so other factors limit the RPM (stroke length - affecting the mean piston speed; and reciprocating masses).
they're similar to the ones on VWs
I'm totally off topic here since my pump is duration limited, not fuel limited. I have VP44 pump so different than VE and has 1800bar cam/pumphead. 8x0.21 nozzles that I had were limited around 450hp range but they are worn out...and to be honest they had low quality atmize from the start. Not available anymore so therefore looking for something else. There is little progress and about 600hp capable nozzles may have been found and will be soon tested.
There must be something different indeed. Unfortunately not much info available. Since Im not aiming for 800+ hp like cummins guys I can probably get away with stock camplate and running pump max 3000rpm. Funny thing is that cummis has only 3-plunger pumps but VAG has 2 and 3 plunger pumps on their V6TDI engines.
