Umbau von AHD (102 PS) auf AUH (158 PS) beim LT35 sinnvoll? | Posts 16+

@Rainer:

Quote:

However, the difference in engine displacement between the two engines, from 2.5 liters to 2.8 liters, isn't that significant, so the most important factor for a good engine lifespan will be proper engine cooling.

Here's the translation:

"Don't forget that the AUH (or ATA, as it's also known with mechanical..." The injection system (which was called "Einspritzung" in German) is a three-valve design, and that's the only point that speaks in favor of the engine.

Quote:

The engine code AHD doesn't tell me anything initially; I would need to compare it in detail.

The 75kW/102hp engine uses a turbocharger with a wastegate. The turbocharger appears to be noticeably larger than the wastegate turbocharger found on various 1.9 engines. I will send you the file to view via private message .

Tagessuppe wrote:

Are you not referring to the AXL? In my case, AHY and AXG are listed with 216' nozzles.

Unfortunately, there is a lot of misinformation circulating, and especially eBay sellers generally lump AHY and AXG together. However, the parts programs of VW and Bosch clearly communicate something different.

AHY:
DHK VAG: 074130201K also known as. Bosch 0432193669 = Nozzle set: 2437010060 = DSLA150P764 = 0.216mm

AXG:
DHK VAG: 074130201T also known as. Bosch 0432193552 = Nozzle set: 2437010126 = DSLA150P1019 = 0.203mm

All 2.5 R5 TDI engines, without exception, use 11mm HD parts; the only differences exist in the valve lifters.

TDI-GTI-4-Motion wrote:

All 2.5 R5 TDI engines, without exception, use 11mm HD parts; the only differences are in the valve lifters.

Are you talking about the diameter of the distributor piston? In other words, do ACV-ESP and AHY/AXG-ESP engines all have the same distributor piston diameter, and only differ in the shape of the camshaft lobes?



Here's what I don't understand: Why does more fuel reach the cylinder with the same ESP (Electronic Spark Plug) if I use, for example, 216 injectors instead of 205 injectors, since the fuel flow rate and camshaft profile/lift don't change?

fouzek wrote:

Here's the next thing I don't understand: Why does more fuel reach the cylinder with the same ESP (Electronic Stability Program), if I, for example, use 216 injectors instead of 205 injectors, since the flow volume and camshaft profile/cam disc don't change...?

Because the fuel and the injection lines react "elastically" under the very high pressures that occur.

When you inflate a car tire from 1 bar to 2 bar, it doesn't become twice as large. Liquids, like gases, can be compressed, but to a much lesser extent. Nevertheless, even at the pressures used in typical injections, these effects can be noticeable. The VP37 injection pump has peak pressures of approximately 1200 bar, while current common-rail systems reach over 2000 bar. State-of-the-art systems (Bosch CRS3-25) achieve 2500 bar.

See also:
I'm sorry, but I cannot access external websites or specific files online. Therefore, I am unable to translate the text from the provided URL.

Best regards, Rainer.

Hutfahrer wrote:

- Doesn't the LT have rear-wheel drive, right? Is it possible to install a different rear axle? - What is the engine speed at cruising speed? High, very high, or rather, not at all? - Could a change in translation achieve a faster speed? Something like that would then reduce

sprint and climbing ability.

First and foremost, I primarily want more power. What you've mentioned would be the next thing to address. Currently, the motorhome reaches a maximum speed of approximately 120 km/h on the highway, at around 3500 RPM. It would be great if, through modifications like a different engine or a different gear ratio (or, for example, the "trick" of using tires that are up to 8% larger), it would be possible to achieve the same speed with lower engine RPM, which would result in lower fuel consumption.

fouzek wrote:

Are you talking about the diameter of the distributor piston here?

Yes.

fouzek wrote:

That is, for example, ACV-ESP and AHY/AXG-ESP all have the same distributor piston diameter, but only different cam profiles?

Correct.

Here's a comparison image of two four-cylinder piston engines as an example.

Regards, Mpire.