I am looking at buying a 91 350 SDL that recieved a new factory motor in 2000. I am told that the new motor does not have the "rod bending" issues of the old. Is true? Otherwise, are there any other issues to lookout for?

Many thanks!

I would not assume that the new block would necessarily not bend a rod.

Tom W

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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.

That is correct the factory replacement engines do not bend the rods.

As long as they used the updated connectiong rods, then they should not bend.

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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

Personally I would not trust that "rule".

I am pretty sure that several folks have posted here with factory replacement blocks with bent rods.

Tom W

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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.

My 350 SD is great.

You should buy one.

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1991 350SD (updated rods)
Biodiesel B100 when I can find it.
Dino when really cold outside

I'd buy it, it probably has all the updates.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Where is this car located? I would take a look.

Greg

My 1991 350SDL purchased new by me has 197K miles on it now and has no signs of a bent rod. Engine was built 12/91, don't know if it has the updated rods or not. Has been a terrific car.

Production of MY-1991 Mercedes ended in mid 1991. If the engine was produced 12/91, it is probably not 12/91, but the 12th week of 1991.

Oh, and I'd buy a nice 350SDL in a heartbeat. I'd keep a 3.0 short-block around for a spare perhaps, but I love the cars.

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Gone to the dark side

- Jeff