Welcher PD Motor ist der "beste"? | Posts 16+

As far as I know, the problem isn't with the engine block itself, but with the piston sleeves.
But he's really not as bad as his reputation on the forums suggests.
My ex-girlfriend's car had about 250,000 kilometers and ran like new.
He also gave him some 10W60 oil... and not that watered-down PD stuff.
And the oil was changed every 8-10 thousand kilometers.

Quote:

AFAIK, the problem isn't with the engine block itself, but rather with the piston sleeves...

Yep, that's probably the biggest weakness of the AJM.
Nevertheless, the lower part (engine block) of the 130/150 hp version has better prerequisites for a long lifespan.

i.e., is the bushing material too weak? And as a result, is it causing piston seizure?

Is this only the case with the AJM engine, or do the 100 hp PD engines have the same cylinder liners?

Regards,

Paul.

Quote:

i.e., is the bushing material too weak? and does that cause piston failure?

Okay, I think you meant the connecting rod bearings, specifically the upper bearing of the connecting rod (connecting rod eye).

I believe the list of AJM diseases is minimally longer!

However, I also have some vehicles in my care that have already reached 250,000 km despite experiencing some issues.


Tom.

i.e., is the bushing material too weak? and therefore causing piston failure?

Sorry, I seem to have misread something. I think it refers to the connecting rod bearings, specifically the upper bearing of the connecting rod (connecting rod eye).

Hold on a second. Please explain exactly what the problem is. I don't want us to misunderstand each other. I was referring to the cylinder walls – specifically, the sleeves that are pressed into the engine block where the pistons move.

'If it's just the bearings, I could insert some from Arl before installation. It's not a big deal if they fit directly.'

Cartridges pressed into the block?

Only the TDI Simson has something like that...

Okay, putting the jokes aside - the drilling is directly within the block, so there are no blind spots.

I highly doubt that the ARL storage solutions are compatible, and I believe they are not!

Tom.

Yes, yes, of course I meant the connecting rod bearings, or rather, the connecting rod bores.

Piston liners... Mercedes had eliminated them in diesel engines at the beginning of the 1990s .
But I don't believe the TDIs ever had that feature.

I started disassembling the donor today.

The car strangely doesn't have glow plug heating.

and the car also has a pre-lift pump in the fuel tank.

Has anyone ever seen a power distribution unit (PDU) without a pump in the tank? If so, how do they extract diesel from the tank for the PDUs?

Sure, here is the translation of the text from German to English:

'Hello.'

Paul.

All the PD models have an electric pre-charge pump – you can hear it when you turn on the ignition!

There's also a mechanical tandem pump located on the cylinder head.

Tom.

Yes, that's what I always thought too. But recently, I read somewhere in a forum that only ASZ/ARL models have a pump in the fuel tank.

polo2f wrote:

I just read somewhere in a forum that only the ASZ/ARL models have a pump in the fuel tank.

Then please post a link to it – like myfisch, I simply believe it's wrong.

matthiasTDI96 wrote:

Actually, not always. Almost all TDI engines have glow plugs in the coolant. Exceptions are Jan's Ibiza, my Golf, and as far as I know, the 9N Polos like Ulf's, which have electric heating elements in the ventilation system.

AFAIK, the automatic models of the G IV ASZ also don't have them.

I'm currently dismantling a Bora AJM. It was manufactured in January 2001 and has a 6-speed manual transmission, and it doesn't have glow plug preheating.

I just don't understand why it has to be an AJM; after all, even with tuning, it doesn't produce more power than an ALH .

You don't always have to focus solely on performance. That's secondary for me. I don't plan on tuning the AJM engine. I'll just drive it until it breaks down, or until I find a more affordable ASZ or ARL engine.

'I'm going to modify it because the VP TDI engine is really annoying with its jerky behavior when coasting. I got the Bora very cheaply with an AJM engine, so it will definitely be an AJM.'