bigger nozzles for the 2.5 TDI V6, at last useful info !!!

[blackwagon]

Hello Everyone,

At last I got useful info about bigger nozzels for the 2.5 V6 TDI.
Got hold of a friendly guy at BOSCH who has acces to the datasheets.
I dished up a number of nozzle part numbers and asked for the specs.

The stock nozzle for the 180hp AKE engine is the 142P925 which flows 380cc/30sec and has 6 spray holes
The DSLA 142P1519 has 440cc/30sec, 6 spray holes AND the same spray angle as the 142P925
That is +-16% more flow and the same spray pattern, seems te be ideal to me !

For the very power hungry, the 143P894 has 800cc/30sec and 8 spray holes :-))

Best Regards

[joedredd]

Dont suppose you can get info for AFB engine?? or can I use the nozzles above, are they the same spray angle?

[blackwagon]

Hello,

The AFB had 5 spray holes and if I remember correctly had a tiny bit lower flowrate than the AKE.
But the spray angle was also 142°. You can definately use the 142P1519 in the AFB engine, 6 spray holes will give you better atomization.
I am convinced this is the right way to go, now we know we get about 16% extra flowrate from a quality Bosch nozzle at an affordable price. I once had 'performance' .240 injectors in my old 2.5 AEL, they delivered some extra power, but spray pattern was erratic from day 1 and after 2 months I had to throw them out because they where leaking and one of them started making noise. I don't pretend that there aren't good quality performance nozzles other than Bosch, but I don't want to go through the effort, cost and risk to try and find the good ones if I can buy Bosch OEM quality at a lower price. But this is only my personal view.

Best Regards

[joedredd]

Dont suppose "your friendly guy at Bosch" can get these at very good prices as well ?

[blackwagon]

Hello,

I just ordered mine, 66€+VAT each, normal Bosch price.

B.R

[diffas]

Any idea how to change the idle-IQ from AKN? I'm currently running those 8-hole nozzles. Maybe to much fuel on idle.

[blackwagon]

You are running the 143P894 ?
There is an adaptation channel for the fuelling around idle, but I doubt it will let you do corrections anywhere as big as you need to get it running perfectly with those injectors.
You will need a proper remap, and then still it won't be as smooth and smokefree as stock.
I think you did overdo it a bit, 800cc compared to 380cc, thats more than double (and AKN had even less than 380cc), are you running a HUGE charger to deliver enough air to achieve 300+ hp ?
Also, the AKN pump only has 2 plungers, the AKE had 3. So your pump is probably maxed out at 185hp.

[diffas]

Pump maxed out? I runned over 200hp with stock nozzles. Proper remap and enuff air should do the trick...my goal is ~180kw.
Current charger is maybe too small (2556) for even reaching that 180kw. That we will see later. I'll dyno my current setup on
next weekend. I'm not sure are my nozzles the same you mentioned, because this engine has bit different nozzle holders than AFB.
Stock nozzles were 142P795 5x0.18 and I believe the new bigger ones are from Iveco/Cummins truck (143P970 8x0.16 holes).
Same nozzles will not work on AFB and AKN, even the engines are more or less the same.

What comes to rough idle - i put off the Econ button and the car runs idle smoothly . So ony tiny iq change needs to be done.
Whats the adaption channel and with what login code?

[adamss24]

Try 26262 for login code and its the first block you can adjust (iddle speed) or block nr. 3 wich is the injection quantity at iddle but it might not do much ! Try a combination of both and make shure you make a note of the old values just in case things dont go as they should. If the 26262 login code does not work, then you might have an early ECU and you will need to cross reference ETKA for the propper login codes...

[diffas]

That login code isn't working. :/ My ecu is 8D0 907 401 Q
I need to keep my Econ-button off then.

[blackwagon]

Hello,

Where did you get the injector bodies for the IVECO nozzles ? Are they a straight fit in the 2.5 TDI's heads ?

B.R

[diffas]

Well ok u just need to use nozzle tips from iveco/cummins not the whole injector. The tip fits your own stock injectorbody. I got my nozzles from
TDIfreak from Findiesel. Email: info at findiesel.fi

btw: my latest dyno is here. Floored at 2000rpm. We will see the result
when we do new mod later on this summer. Now I have "bigger" turbo than
I had when that dyno was ran.

[doktorec]

Well ok u just need to use nozzle tips from iveco/cummins not the whole injector. The tip fits your own stock injectorbody. I got my nozzles from
TDIfreak from Findiesel. Email: info at findiesel.fi

btw: my latest dyno is here. Floored at 2000rpm. We will see the result
when we do new mod later on this summer. Now I have "bigger" turbo than
I had when that dyno was ran.

what's the price of those 143P894 ?

[diffas]

what's the price of those 143P894 ?

Can't say correct price but around 600-700euros. Send email to findiesel if you want correct info.

[adamss24]

For the very power hungry, the 143P894 has 800cc/30sec and 8 spray holes :-))

Best Regards

For some reason the last bosch part number isnt recognised by my local Bosch agent, do you know what vehicles are they for ?

[doktorec]

i heard that AFB and AKN have deferent injector body.can i run them( 143P894)on AFB quatrro with big turbochagrer or they fit only AKN?