Originally Posted by sixto

How familiar are you with 124s in general?

Early 2.5s had accelerated wear of the timing chain and cam sprocket. Nothing replacement doesn’t fix.

There’s not a lot of guidance on sorting lack of boost. You might find a bargain car with no boost or it might hit during your ownership. IMHO you’re better off swapping the EDS controlled vacuum boost actuator for a simpler manifold pressure boost actuator.

Too many 2.5s suffer from failed head gaskets that leak oil into #1 and even #2 cylinders. Plan on a head gasket job at least once in it’s lifetime.

Mind the early style vacuum pump with exposed bearings. You want a new style vacuum pump with shielded bearings.

Sixto
98 E320s sedan and wagon
02 C320 wagon