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Old 01-12-2001, 04:11 PM
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Join Date: Jun 2000
Posts: 45
Looking for hp/bhp/torque ratings on the 300SD motor from 1981-1985, numbered 617.

Also looking for what the transmissions (auto) part numbers are that would work with this motor.


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Old 01-12-2001, 05:30 PM
Wm. Lewallen
Posts: n/a
According to the owners manual for the 1983 300SD the output according to SAE is 120 net-bhp@4350rpm. Torque is not listed, but I believe it is adaquate.
Bill Lewallen Lexington,Ky.
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Old 01-12-2001, 06:31 PM
IMUL's Avatar
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Join Date: Oct 2000
Posts: 52
Here is a MB diesel spec sheet that I ran across recently. It's not completely accurate, but it's still a good guide.
1980 Mercedes 240D
1982 Mercedes 300SD
1985 Mercedes 300D
1993 Dodge Cummins Turbo Diesel
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Old 01-12-2001, 07:07 PM
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There are slight variations depending on chassis.

All models:1978-84

Bore/stroke: 90.9/92.4
Total eff. piston displacement in cc:2998
compression ratio: 21.5:1
Max. engine rpm (no load): 4900-5200

Engine output:
KW/rpm: 85/4200(other models:89/4350)

SAE net bhp/rpm: 110/4200 (1980:120/4350)
other models: 170/2400

Max. torque
Nm/rpm:235/2400(other models:250/2400)

SAE net lbf-ft./rpm:168/2400(1980:170/2400)
other models:170/2400

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