om601 2.3 turbodiesel power limit
om601 2.3 turbodiesel power limit
Finding specific details about tuning up a 601 is going to be hard. They were only used in sprinter vans, so they have a much smaller amount of modification information compared to the other diesel engines. Its a 2.3L 4cylinder version of the 603, so whatever people are getting out of a 603 you should be able to hit 65-75% of those numbers. If the 601 injection pump flows the same as the 603 pump, then I would guess a maxed out 601 pump could do maybe ~150hp.
As far as the transmission and rear end capability, if you have newer w124 that came with a M104 and 722.5 it can obviously handle +250lb-ft without issue. Depending what kind of w124 you have and what trans/diff it has the limits might be less.
Did any of the OM601 setups use an intercooler? If not, then that is the easy first step for power. As someone who has spent way too much time working on swaps, I think you should keep in mind "more simple=more driving=more fun". Put in an intercooler, crank up the stock injection pump, make sure your radiator and oil cooler are good, then just drive it.