I been searching to find out if the 103 is heavier than the 602 turbo but I haven’t find out. Does anyone know ?

Diesel engines are usually heavier than gassers. But, a good way to find out is look for engines for sale and see what the shipping weight is, or look at reman engine sites and see what the shipping weight of the the long block comes to.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

The difference in weight is not large. Mercedes usually uses the same blocks and cranks for the gas and diesel engines so there is a difference in the weight of the aluminum heads vs iron. Generally mb makes the engines near the same weight so the handling is about the same for all engines in the same body.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

You are right Tom the difference is not large and since both engines have aluminum heads and iron blocks the heaviest engine is the 103 because it has one more cylinder. I been looking at engines for sale but I haven’t found the exact weight