what are the best injectors?

[mdonau]

It seems to me that getting your pump tuned is a better upgrade than changing injectors/nozzles.  :?:

thats the point! took me more than 5 hours to get a usable adjustment..

what do you say about dn0sd 261?

261 and 265 are equal to the 297 and similar but for mercedes..

The question is:
are nozzles for prechamber-engines with row-pumps good for
whirl-chamber-engines with distributor-pumps?

if you mount stock merc. injectors (pops at 115Bar) and do no adjustment
 on the pump, the injected volume will increase, because the nozzles opens earlier.
->looking at it this way, the engine will perform better, but atomisation will be worse.
Thats no problem in an mercedes, the precamber is built to compensate.

The VW-turbo-nozzles pop at 155 Bar.. good atomisation is required for fast combustion.
The Injection-time is shorter, burning is finished earlier:
results in better performance, thats also what a bigger plunger makes, but without
the disadvantages of poorer atomisation by lowering pop-pressure.

[oldskool rich]

im using injectors off an old solid lifter n/a 1.6

i saw audi80 running them in that 225hp rocco, i assumed that there was a reason behind it.

No reason for these, just stock ones. I still donīt believe there is much differences in power, I donīt believe in butt dynos

first of all, much respect to you, i love your work, its what got me into diesels.

if different injectors arent a big deal, what is? where do you get all your power? is it just the VNT? my pump is tuned quite a lot and it hasnt made as much different as i thort it would, any suggestions? :roll:

if i cant crack it im gona get a supercharger too, it just takes so long to build boost with a T3

[RabbitJockey]

i think his intake, big turbo, big boost, intercooler, big exhaust, and injection pump pump are where the power comes from.

[Vincent Waldon]

It seems to me that getting your pump tuned is a better upgrade than changing injectors/nozzles.  :?:

1000X... imho the nozzles, assuming they are fresh and well-calibrated, are virtually insignificant in terms of performance upgrade potential for us daily drivers.

There's tons you can do with a stock VW in terms of better fueling, breathing, and charge cooling.... huge payback compared to fooling around with nozzle differences only visible under a scanning electron microscope !!  ;-)

[MJF]

first of all, much respect to you, i love your work, its what got me into diesels.

if different injectors arent a big deal, what is? where do you get all your power? is it just the VNT? my pump is tuned quite a lot and it hasnt made as much different as i thort it would, any suggestions? :roll:

i think his intake, big turbo, big boost, intercooler, big exhaust, and injection pump are where the power comes from.

Fuel pump is most important. Itīs the pump that delivers fuel, not injectors With those mods above, you can get easily up to 180hp from otherwise stock 1,6 engine.

[oldskool rich]

first of all, much respect to you, i love your work, its what got me into diesels.

if different injectors arent a big deal, what is? where do you get all your power? is it just the VNT? my pump is tuned quite a lot and it hasnt made as much different as i thort it would, any suggestions? :roll:

i think his intake, big turbo, big boost, intercooler, big exhaust, and injection pump are where the power comes from.

Fuel pump is most important. Itīs the pump that delivers fuel, not injectors With those mods above, you can get easily up to 180hp from otherwise stock 1,6 engine.

my pump has 11mm pump piston, gov mod, gtd boost pin, i hav a short stainless 2.5" straight through exhaust, t3 with closed waste gate, landrover intercooler, maybe im just being fussy, i just expected a little more

[MJF]

How much hpīs do you have now? Stock 1,6 T3 is small, have you measured your exhasut manifold pressures?

[oldskool rich]

tbh im having clutch trouble so its hard to say, i recon 150 at the moment

exhaust manifold pressure? what will that tell me?

[hillfolk'r]

How much hpīs do you have now? Stock 1,6 T3 is small, have you measured your exhasut manifold pressures?

yea i sorta gotta call that out 180hp 1.6??
hmm when my gtech is telling my 140 hp on my tdi-m,and im knocking on the door of 13 second 1/4's
12mm pump,and race 520 nozzles,mucho boost too(30+psi)

[hillfolk'r]

tbh im having clutch trouble so its hard to say, i recon 150 at the moment

exhaust manifold pressure? what will that tell me?

my old1.6td made a centerforce dualfriction clutch slip...........

[MJF]

EMP shouldnīt be much higher than boost, otherwise your turbo is choking the engine. And before anyone says, yes it is possible. 150hp from stock t3 is already a lot IMO.

Hillfolkīr: I always speak crank hpīs, becouse thatīs what we measure in dynoīs here. Iīve once used gtech for my Audi. It showed 143hp, when dyno told 151whp and 173 crank hp. Low 14īs is no problem with 150whp in light car like yours.

[oldskool rich]

wow i didnt think it was that fast.

will be trying it down the strip soon, the main thing holding me back is my top end. the tdi gear box with 13" wheels wont let me do over a hundred :cry: