When did the Mercedes Benz OM617 engine come out?
Essentially a OM616 with an extra cylinder, it debuted in 1974 with the W115(240 3.0d) chassis. Bore and stroke was 91 mm × 92.4 mm (3.58 in × 3.64 in). It was originally 80 PS (59 kW; 79 hp). Bosch MW inline injection pumps were used, which had flyweight governors and vacuum shutoff.
When did Mercedes Benz start making turbodiesel cars?
Pencil glow plugs were provided on all OM617A engines. In 1978, the OM617.950 was mated with the Mercedes-Benz W116 to produce the North American market-only 300SD, the world’s first production turbodiesel sedan. These engines pre-dated the introduction of tighter emissions laws, so were not fitted with EGR.
Where are the timing marks on an OM616?
The second location is at the front of the camshaft right behind the sprocket. You will have to remove the valve cover to see these marks. There a a v notch cut in the spacer that sits on the end of the camshaft just behind the sprocket. On the forward cam tower there is a raised arrow as you see in the picture below.
How can I tell if my engine is a TDC?
There is a pointer coming off the engine block that points to the position of the crank in relation to top dead center (tdc) on number one cylinder. When the pointer is at zero degrees and both valves are closed (you can feel play in the rocker arm) on number 1 cylinder your engine is a TDC (with piston coming up on compression stroke).
What was the displacement of the Mercedes Benz OM617?
The engine capacity was lowered to 3.0 L (2,998 cc) to satisfy engine displacement tax laws in Europe by changing the bore to 90.9 mm (3.58 in). September 1979 saw a new camshaft with greater valve lift let air and exhaust gases have less resistance. Power output rose to 88 PS (65 kW; 87 hp). Torque remained at 172 N⋅m (127 lb⋅ft) @ 2400 rpm.
In 1978, the OM617.950 was mated with the Mercedes-Benz W116 to produce the North American market-only 300SD, the world’s first production turbodiesel sedan. These engines pre-dated the introduction of tighter emissions laws, so were not fitted with EGR. Power originally was 111 PS (82 kW; 109 hp) @ 4200 rpm, torque 228 N⋅m (168 lb⋅ft) @ 2400 rpm.
When did the Bosch OM617 engine come out?
OM617 Naturally Aspirated. Essentially a OM616 with an extra cylinder, it debuted in 1974 with the W115(240 3.0d) chassis. Bore and stroke was 91 mm × 92.4 mm (3.58 in × 3.64 in). It was originally 80 PS (59 kW; 79 hp). Bosch MW inline injection pumps were used, which had flyweight governors and vacuum shutoff.
When did Mercedes Benz change the engine size?
In August 1978 the precombustion chamber was updated to be similar to the new OM617A design for more swirl and more efficient combustion. The engine capacity was lowered to 3.0 L (2,998 cc) to satisfy engine displacement tax laws in Europe by changing the bore to 90.9 mm (3.58 in).