3,2l M104 (104.992) out of a ’93 320E or E320.
The internals remain all stock.
Pistondishes turned down from 1,2mm to 3,25mm, remaining piston bottom thickness ~5,2mm. …. CR 8,9:1
Engine gets all new gaskets and seals, new bearings and new rings. I got the head faced, they took 0,4mm off to make it flat again.
Conical valvesprings are in the M104s from 11/1993 on, till then they also have oilsquirters for the pistons.
In the WIS( workshop information service) it says all these engines (104.992 and 104.942) have 9,2:1 CR which is not true.