280SE engine torque curve

[nugat]

Hello,
I drive a 1987 G-wagen, but my question is most likely to be answered here.
The regular G engine 2.8L m110.994 failed. I purchased an m110.989 from 280SE/SEL 1981-1985 (185HP). I am looking for a power/torque chart or an actual dyno plot for this engine. I will appreciate any help.

 

[grober]

M110.994
This engine was specifically produced for the G-class Geländewagen. It has a low compression ratio. It uses K-Jetronic.

Power output: 156 hp (115 kW) at 5250rpm up to 1984; 150 hp (110 kW) at 5250rpm from 1984. Torque: 226 Nm at 4250rpm.

Applications:

* 1981-1985 280GE

M110.989

Power output: 185 hp (136 kW) at 5800rpm. K-Jetronic

Applications:

* 1981.10-1985 280SE
* 1981.10-1985 280SEL


by extrapolation from other similar high compression engines M110.987 listed on the page (no figure quoted for the M110.989)
Maximum torque would be around 240 Nm at 4500rpm


see http://en.wikipedia.org/wiki/Mercedes-Benz_M110_engine#M110.984

 

[grober]

heres the dyno curve for the m110.994 and for the setie (standard) and tuned version of the 185bhp M110 ENGINE from AMG

 

[nugat]

Thank you.
The first attachment is m110.994 curve against diesels indeed, hand copied form the service manual graph-below.
The second is from which m110.xxx? The power is 185PS at 5800rpm, but torque seems too low. 110.989 had 240Nm peak at 4500rpm.

 

[grober]

Unfortunately the AMG graph titles which I omitted from the image to reduce it to a size acceptable for the forum image rules do not specify which version of the m110.xxx engine was used. Sorry.
If you want to improve the low revs tractability of the engine fitting a good gas flowed tubular steel exhaust manifold/ exhaust will make a big improvement.

 

[nugat]

Unfortunately the AMG graph titles which I omitted from the image to reduce it to a size acceptable for the forum image rules do not specify which version of the m110.xxx engine was used. Sorry.
If you want to improve the low revs tractability of the engine fitting a good gas flowed tubular steel exhaust manifold/ exhaust will make a big improvement.

Thank you. For a 4x4 any low rpm torque increase is welcome. I am removing the first muffler. Would new manifolds improve thing further?

 

[grober]

Several years ago I fitted a complete mild steel free flow exhaust system ( 4-2-1 Janspeed) to a 2 litre 4 cylinder Ford engine, replacing the cast iron manifold and standard exhaust. It made a tremendous difference to the engines tractability allowing it to pull well from low revolutions in the higher gears. Later I replaced the rear piping and silencer with standard parts the free flow manifold was retained and so was the increased tractability showing it was the manifold that was responsible. The only problem will be getting your hands on one altho there may be manufacturers in Germany that supply one? The only economic way will be to fabricate one yourself from suitable mild steel pipe work. Motor cycle shops are particularly good at this sort of custom exhaust fabrication. This sort of thing http://www.maniflow.co.uk/ According to their web site they make a 6 cylinder one for a TR6 for about £150. It might be worth sending them an E-mail?

 

[nugat]

found some...