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Warum denkst du, dass du mit dem 928 keine 100.000 km im Leben fahren wirst?
Hast du Pläne für zuküftlige E-Mobilität?
Warum denkst du, dass du in deinem Leben keine 100.000 km mit dem 928 fahren wirst?
Haben Sie Pläne für die E-Mobilität der Zukunft?
Åke
Ok, that was a little premature. I will probably drive more than 100,000km with the 928 :-)
But if the coating lasts 100,000km, that's ok for me.
Ok, that was a little premature. I will probably drive more than 100,000km with the 928 :-)
But if the coating lasts 100,000km, that's ok for me.
Kai,
The stock motor when maintained correctly is capable of going at least 500k km without major intervention when driven a reasonable mileage annually. If Audi use the system you are deploying on their alusil motors then I would think you can be reasonably sure you will get a "decent" life span out of them providing the coating thickness you intend to deploy is not outside the bounds of what the system is rated to handle.
For sure it sounds as though it is worth researching more knowledge on the subject matter as I intend to do just for pure technical interest alone. . . .
Der Serienmotor ist bei richtiger Wartung in der Lage, mindestens 500.000 km ohne größere Eingriffe zu fahren, wenn er jährlich eine Kilometerleistung gefahren wird. Wenn Audi das System verwendet, das Sie für seine Alusil-Motoren einsetzen, can Sie meiner Meinung nach Lebensdauer nach einigermaßen sicher sein, dass Sie eine "anständige" Erzielung erzielen, vorausgesetzt, die Beschichtungsdicke, die Sie einsetzen möchten, liegt nicht außerhalb der Grenzen des Systems ist für die Handhabung ausgelegt.
Es klingt auf jeden Fall so, als würde es sich lohnen, mehr Wissen zu diesem Thema zu recherchieren, wie ich es nur aus rein technischem Interesse beabsichtige. . . .
Ich denke auch, dass die Beschichtung deutlich länger als 100.000km hält. Aber wenn es nicht länger dauern würde, wäre das auch in Ordnung für mich.
Hi.
Do you have any doubts about whether the engine is working properly?
And if so, why?
Truthfully, my experience with piston coatings, in the 928 engine is not good.
I've taken apart about ten 928 engines with "coated" pistons (which others had built), all with less than 500 miles.
I had a set of Mahle Ferroprinted pistons made for a 928 engine, (by Mahle.) The coating fell off and the pistons galled in the bores in 100 miles.
As far as what you are doing,
I'm only interested in seeing how/if it works.
And I hope it works great!
Truthfully, my experience with piston coatings, in the 928 engine is not good.
I've taken apart about ten 928 engines with "coated" pistons (which others had built), all with less than 500 miles.
I had a set of Mahle Ferroprinted pistons made for a 928 engine, (by Mahle.) The coating fell off and the pistons galled in the bores in 100 miles.
As far as what you are doing,
I'm only interested in seeing how/if it works.
And I hope it works great!
Hi .
well, you can certainly make a lot of mistakes when it comes to coating. Of course, what the pistons are coated with is very important.
i had it done by someone who has been doing it for a very long time and a lot of engines have been running with his coating for a long time
Hi .
well, you can certainly make a lot of mistakes when it comes to coating. Of course, what the pistons are coated with is very important.
i had it done by someone who has been doing it for a very long time and a lot of engines have been running with his coating for a long time
It's good that you found someone with the expertise and the desire to do things correctly.
That's rare, over here.
The 928 engine and piston coating has been a real bag of worms, over here.
And it is difficult to determine if the problem is the coatings or the application.
I figured that Mahle should know what they were doing, but they were not even interested enough to look at the failure.
Interestingly enough, what apparently works fine for a 944 engine, does not work in a 928 engine.
Because the connecting rod are perfectly centered in a 944 application (in relationship to the crankshaft), there is very little side loading. The piston has no forces other than the combustion event (and the resulting "rocking" in the bore, from that event.)
In the 928 application, the pistons are not centered directly in line with the crankshaft and an offset rod is required. This offset induces an additional force, since the piston now has to resist twisting in the perpendicular plane to the normal rocking from combustion.
It's good that you found someone with the expertise and the desire to do things correctly.
That's rare, over here.
The 928 engine and piston coating has been a real bag of worms, over here.
And it is difficult to determine if the problem is the coatings or the application.
I figured that Mahle should know what they were doing, but they were not even interested enough to look at the failure.
Interestingly enough, what apparently works fine for a 944 engine, does not work in a 928 engine.
Because the connecting rod are perfectly centered in a 944 application (in relationship to the crankshaft), there is very little side loading. The piston has no forces other than the combustion event (and the resulting "rocking" in the bore, from that event.)
In the 928 application, the pistons are not centered directly in line with the crankshaft and an offset rod is required. This offset induces an additional force, since the piston now has to resist twisting in the perpendicular plane to the normal rocking from combustion.
Greg I had exactly the same issue as you with Mahle motorsport ferroprint pistons when I rebuilt the engine in the 1989 944 Turbo Cup car I used to own. Sent parts to mahle in the US but they blamed everything else but their parts.
I ended up using a good used block and pistons.
Greg I had exactly the same issue as you with Mahle motorsport ferroprint pistons when I rebuilt the engine in the 1989 944 Turbo Cup car I used to own. Sent parts to mahle in the US but they blamed everything else but their parts.
I ended up using a good used block and pistons.
They refused to even look at them, because they were "out of warranty" because the engine took more than a year to round up all the parts (custom rods) and assemble it.
Apparently, Ferroprint has a shelf life....
Hello.
I'm about to start installing the engine now. On Friday it's time.
It turns easily by hand, everything is unobtrusive. I hope everything works out and I have an almost new engine.
Kais Engine is up and running. He decided to sell his car because the energy crisis here in Germany harm the free money every family has for pleasure projects.
01-19-2022, 01:03 PM
