Just aquired an AFM engine but no ecu, need advice

Has anyone tried a disco pump with 300 bar injectors?
What is the LR pump rated to work at?
Could I maybe swap the cam plate for the etdi?

<thread hijack>

Aren't those two-stage injectors? Both gentlemen could be right...

Look at the double stage VW injectors not all have the pressures stamped on them if you look at many TDi injectors some are only marked with a part number , it does not mater which factory they were made , I've had sets from the French and German factories with the same part numbers some have both pressures marked 220/300 some have only the lower 190/220 bar stampings ,( this helps them not sound like a tran-sit Di )
I've just quickly checked some pumps in at the moment disco one that only has 2.44mm lift , early TDi AHU/1Z pump 3.00mm later AFN/ASV 3.09mm .

Its also found after failed pumps that some people had changed to larger injector nozzles and not had the injectors pop tested/reshimmed , on checking the injectors they can be vastly out of range exceeding the specs greatly , they can go from 300 bar to over 400 causing wear/damage to the pump, some people get away with it but its not good.






Edited by famous phil - 19 May 10 at 21:36

AFN, 1Z, AHU pop 190/220 new, 170 used, ALH (later type) pop 220. They operate at these pressures. Mm the guy doing the nozzles, flowing and pressures highers the needle lift. 98 AFN 190. Is that Andrew`s revamped modulation system pic?

Edited by rolo - 19 May 10 at 22:46

hi all have a drink on me  disco 2.5 tdi have got nozzle opening pressure of 220- 280 bar so there is no problem with the disco pump running 300 bar nozzle's as for the cam plate lift the afn pump has a 10mm head as opposed to the discos 11mm  so the afn needs a longer stroke to produce the same pressure the govonor could be better but will give more than satisfactory results and for the pump bracket use a abl [1.9td t4] as it do not need opening up  and as for the vane controller  look on vwgtd forum as the person who made the one pictured in the earlier post has a detailed thread on it although it looks like some one here is alluding to it as there own  ?

Thanks light, very helpful info. I have seen the vnt acuator on GTD forum  as well. made by andrew libby aka libbypappa

light wrote: <FONT style=": #dddddd">as for the vane controller  look on vwgtd forum as the person who made the one pictured in the earlier post has a detailed thread on it although it looks like some one here is alluding to it as there own  ?

Hi and welcome light , I don't think anyone was saying it was their own work and just pointing out one way its been done , probably be quite a bit different in a camper   I've not decided which way to go on my installation as thinking use the ECU or ECU/MTDi only cause I'll be using the Audi box ,its more like mistaken assumptions

must add a very close and interesting theory regarding the pump/ injectors   

Hi,if you removed the diff and pinion from the box it could be flipped but because its pinion is offset it means that the diff rises , it then interferes with the input shaft and the drive flanges don't line up , I'm draughting up dimensions for castings and forged parts to check feasibility   

With regards to the disco pump its OK if the correct parts are used God help the bloke thats searching for a distributor coil spark plugs carburettor from an old series 3 landy to run a Passat or A4 engine      

Edited by famous phil - 30 May 10 at 09:06

that's what a lot  dont realise is the the low down torque off the tdi  your top end could be help out with a different governor the disco,s pull back fueling quite low down in the rev range and relise on the heavier rotating mass {big fuck of flywheel} to maintain momentum ,did you use the the vnt with out a controller