Hello everyone! Some urgent help needed.
Friend and I have disassembled my AAN engine from my 1994. UrS4 and we ran into a weird problem.
Crankshaft has number 034 105 101, with imprinted letter D on one of the counterweights.
We measured pistons and rods and they are AAN stock, block is AAN, cylinder head is AAN, everything is alright, except that the piston is 6 mm below TDC - it is not aligned with the block surface.
Anyone has any idea what is happening?
We’ve never seen something like this.
Pictures are in attachment.