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  #1  
Old 06-23-2007, 07:09 AM
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Location: Wake Forest, NC
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617 952 and the 617 950

What are the differences between the 617 950 (from the 78-80 300sd w116) and the 617 952 (the various 300d turbos)...other than the chasis applications?

I know both are turbos and 5 cylinder and that taps my knowledge of the differences!

Thanks, Don

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  #2  
Old 06-23-2007, 07:23 AM
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The early OM617.950 did not have an EGR and the air cleaner is slightly different. It was 110HP until 1980. It did not have a hardened cam until 1980. The .950s have a slightly longer crankshaft pulley and the power steering pump pulley sticks out more. My 1980 does not have a rack damper pin, although I think mine may be unique. The upper oil pan is smooth on the .950 and ribbed to be stiffer on the .951 and 2

Anything else anyone can add?
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  #3  
Old 06-23-2007, 09:45 AM
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impressive...
I think it has the older vacuum pump. and it's associated external vent tube that goes to the U tube on the air filter element and I don't think it has an oil seperator in the air filter. if the motor has significant blowby, you will coat the turbo in oil in VERY short order.
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  #4  
Old 06-23-2007, 01:00 PM
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No, I think they may have all had oil separators. Yes, the early ones did have the diaphagm pump. My '80 has a piston pump and had an EGR valve, but mine was a California version so the 49 state version may not have ever had the EGR.

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)
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