Audi 2.5l 20v abt engine identify

[ACQ]

Hi,

I have engine which was removed from audi 90 20v sport. It had 2.5l engine 95.5 stroke. Also abt ecu. Could it be original abt engine?

Here is 7a and another piston from this engine to identify in photos. Crankshaft is lightined, inled manofold is ported and some other modification was on engine.

[_ShurikeN]

ABT was told to have 92.8mm stroke.
Piston on the photo looks like one from NM or KR.

[Kiku]

ABT 2.5 original engine(147kw ect.)

https://www.s2forum.com/forum/member-s-area/parts-for-sale-trade/2084445-for-sale-abt-2-5l-7a-stroke-92-8-engine-and-ecu

[RoscoS2]

This is what a 2.0 NM piston looks like, I opened an NM engine last week.

[Kiku]

That crankshaft reminds me more like Oettinger type.

https://www.ebay-kleinanzeigen.de/s-anzeige/audi-80-urquattro-2-5-liter-kurbelwelle-oettinger-s2-rs2-20v/1582325753-223-9305

[ACQ]

So it is simple 2.5l diesel block with nm pistons and 7a head? Cant identify what is the manifactorer of such engine. I thought that it is abt because it was runing on abt ecu. Car was runing really amazing on this modification.

[Bowie69]

Those pistons look shorter than the NM ones linked above? Granted, the crowns look the same.

[michaels2s]

Oettinger is 94,5 mm stroke and small type rod bearings.

[Lago Blue]

Here are photos of a KR piston top (x 2); a KR piston; and a 'Piston & Connecting Rod 87-88 VW Jetta GLI Golf GTI MK2'

kr top 1 Screen Shot 2021-01-19 at 21.50.41.png kr top 2 Screen Shot 2021-01-19 at 21.51.09.png kr piston Screen Shot 2021-01-19 at 22.06.33.png vw gti gli 87-88 rod & piston Screen Shot 2021-01-19 at 22.35.01.png