Report on 216 injectors in the 1Z/AHU engine

Hello,

Following Donalexo's previous report about the 205 injectors, here's my (small) report about the 216 injectors installed in a Golf 3 that I know.

Okay, here are my subjective experiences (from a ride-along):

Regarding performance:
The engine is barely recognizable; this conversion was definitely worth it!
The torque increase, especially in the lower RPM range, is really impressive.
Unfortunately, the car is currently unregistered, and I've never been able to find a suitable route to perform the Ulfschen drag test here in the city.
Subjectively, I would say that the extra performance gained from changing the nozzle is roughly equivalent to that of a very finely tuned 10-cent adjustment.
With the additional 10 cent of power boost activated, there's an increase in performance, but it starts to smoke heavily (of course: too much diesel, not enough air).

Regarding the Vmax:
That's also something where the maximum speed, according to the speedometer, has increased from 190 to 210 .
The engine revs up much more easily now; with the previous tuning, I could only reach a maximum of 200 km/h. At that speed, the RPM is around 4300. Going downhill, it goes even faster, reaching the beginning of the redline, which corresponds to approximately 220 km/h according to the speedometer. I installed an ASD transmission.

Regarding the oil temperature:
Since the replacement, the temperature has increased by about 10 degrees under full load. After 10 minutes of continuous full throttle, it reaches about 132 degrees, and I'm not comfortable pushing it that hard for longer. I don't know if it will go any higher...
Edit: Oil temperature measured in the oil pan!

For stuttering:
I couldn't detect any increased jerking or stuttering in any engine speed range, not even when driving at very low RPMs.

To Russian:
It makes a very slight rumbling sound with the large nozzles, although I had imagined it would be much, much louder. You can't see the reflection of a Russian car in the daytime mirror, only at night in the headlights of the following car... A modern Mercedes emits more smoke than this Golf.
With an additional 10 cents, you can darken areas .

For consumption:
Unfortunately, I can't say anything, as I've been having more fun with the car since then, and it's being driven faster.

EDIT:

Engine running noise:
I mean that the engine is now (especially when it's cold) a bit louder and makes a harsher knocking sound.
A slight twisting of the nozzle stems didn't achieve much...

Other contextual factors:
AGR active, Golf base model (roughly equivalent to Ulf's old 'Baby' ). Tire size: 185/65 R14 WR.

Okay, I hope I've shed some light on that now!


Best regards,

Thank you for the report (especially that you also mentioned the transmission - which is important for me as someone experiencing CTN issues ).

m;

Hello,

Here's a short report about replacing the 205 injectors with 216 injectors in a Passat 3B (with approximately 100,000 km on the clock).

'The following is a translation of the German text:

'The complex...' Replaced the injectors, and I have to say right off the bat that it wasn't worth it for my vehicle.

Regarding performance:
The engine's characteristics have remained almost the same. At higher RPMs, there's a noticeable improvement in how it revs. Otherwise, I haven't noticed much of a difference. A 10-Pfennig (yes, before the Euro) upgrade makes a noticeable difference here.

Unfortunately, I never conducted an Ulfschen permeability test either, so there are no recorded times.
With the 10-cent (Pf) tuning enabled, there's an increase in performance, but it starts to smoke heavily.

Regarding Vmax:
Maybe 5 km/h. Unfortunately, no more than that. That means it was 200 before, and now, depending on the weather, it's 205 on the same route. However, it's always been higher when going downhill. However, at 220 km/h, you are definitely in the red zone (or perhaps no longer safe!).

The engine revs up a bit more easily. Transmission DHF.


Regarding the oil temperature:
Unfortunately, I can't say anything at all.

For stuttering:
No stuttering!

Regarding soot: It produces a very small amount of soot with the large nozzles. The most soot is produced when the EGR is deactivated via a resistor, with a LMM tester (diode), and with a 10-cent tuning modification. The soot is clearly visible in the rearview mirror at night. If you provoke it, the following traffic will keep a distance. But it doesn't yet obscure entire regions;). It really smokes a lot with the improved LMM diode and a 10-cent tuning adjustment at low RPMs and full throttle when the LD (lambda) is still low (air shortage).

For consumption: In my opinion, the achievable minimum has shifted upwards by 0.2 liters.

But the best part is this: With a 0.15 bar increase in boost pressure, a 10-cent tuning adjustment, and 216 nozzles, I can drive up a specific hill on the highway at just over 180 km/h. The car accelerates to over 180 km/h, even if you approach the hill at a lower speed.

216 model without LD increase: approximately 165 km/h.
216 model with LD increase: ~160 km/h
216 tires without load increase and at 10 centigrade: ~175 km/h.
216 with LD boost and 10 cent octane: ~185 km/h.

Attention: These measurements are not necessarily representative, as they were taken on different days with diff. Outdoor temperature measurements were conducted!!

The clear trend indicates that a noticeable increase in power can be observed around 4000 RPM. I would be interested to know how much power/torque that represents.

However, I'm afraid I can't provide any information about the old nozzles, as I haven't driven this route before.

Okay. Soon, it will be time again for new nozzles .

Greetings.

AFN drivers.

Hi,

Have you checked the start date for the vaccinations?

The 1Z has nozzles with a diameter of 0.184 mm and an operating pressure of 190 bar.
AFN 190 bar 0.205.

The 0.216 nozzles are 220 bar nozzles, so the spray should shift towards a "later" injection timing, potentially moving it out of the tolerance range.

m;

Unfortunately, I didn't check the start of the injection.
there
-Starting OK,
-Fuel consumption: Okay.
- Performance was within the expected range.
- Too lazy to rig up a measuring device to connect to the pump cable (I'm a lazy mechanic), and only have digital instruments available.

However, the engine still makes a slight ticking noise. I might need to replace the hydraulic lifters soon. Nozzles are failing, as evidenced by noticeable issues with other nozzles as well.

Furthermore, I once read a post that suggested the pressure increase between 190 and 220 bar should be negligible in terms of time.
However, I am now somewhat uncertain. Perhaps there's still more performance to be unlocked.

Hello,


The clear trend indicates that a noticeable increase in power can be observed around 4000 RPM. I would be interested to know how much power/torque that represents.


Yes, that's my experience as well: The performance characteristics change to the extent that the engine doesn't become 'sluggish' above 3500 rpm; it continues to rev normally.

I wanted to check the fuel injection timing, but my adapter cable is broken. However, that's the first thing I wanted to do this fall...

Best regards,

kapernaum wrote:

Hello, Following Donalexo's previous review of the 205 injectors, here's my (small) review of the 216 injectors, installed in a Golf 3 that I know. Only the nozzle heads were replaced, meaning the nozzle bodies remained the old ones (and therefore the nozzle opening pressures also remained the same). Regarding the oil temperature: Since the replacement, the temperature has increased by about 10 degrees under full load. After 10 minutes of continuous full throttle, it reaches about 132 degrees, and I'm not comfortable pushing it that hard for longer. I don't know if it will go any higher... Edit: Oil temperature measured in the oil pan!

To what extent can damage be expected due to the increased oil temperature?

Hello Blue,

I don't find the issue of oil temperature to be that dramatic anymore. I've read a lot about it in various forums, and from what I've gathered, temperatures up to around 140 degrees Celsius are considered acceptable.

But I would also appreciate expert opinions on this matter!

Best regards,