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Another AMG "Hammer"
- Thread starter 2phast
- Start date
Does anyone remember a "Hammer" coupe being offered a couple of years ago, same colour, with that same grey diamond suede insert pattern? It seemed to have a mysterious space between the grille and front bumper that raised suspiciond of damage. I think the guy was asking $35-40K.
Could this be the same car, with different wheels??
Could this be the same car, with different wheels??
jano said:
That's the plastic cover for the distributor cap. This was standard equipment on all 5.6 liter M117s as well as AMG "Hammer" DOHC motors.
The purpose for this piece was to protect the distributor cap and the coil & spark plug wire leads from weather, moisture, and such.
You can clearly see this cover on the initial photo from my 560SEC top-end rebuild thread here (viewtopic.php?f=46&t=626)
(or in the photo below, from this thread).
Cheers,
Gerry
Yes, the M117 has a single, huge distributor cap and rotor. They work well. Caps seem to last quite a long time with the M117. Here's more information: viewtopic.php?f=46&t=981
The M119's dual-cap/rotor setup was dictated as a standard by and is used with the Bosch LH injection system, which is why it is in the configuration that it is. Essentially, the LH-based M119 was one of the very last MB motors to even use a "real" cap and rotor ... if I remember correctly, most if not all MB motors put into service since just use straight coil packs and the ignition and engine management system is much more integrated and computerized.
Cheers,
Gerry
The M119's dual-cap/rotor setup was dictated as a standard by and is used with the Bosch LH injection system, which is why it is in the configuration that it is. Essentially, the LH-based M119 was one of the very last MB motors to even use a "real" cap and rotor ... if I remember correctly, most if not all MB motors put into service since just use straight coil packs and the ignition and engine management system is much more integrated and computerized.
Cheers,
Gerry
Gerry is correct. The late M119 (119.98x) used from 1996-up has coil-on-plug ignition, and no distributors. This is controlled by the newer, more sophisticated ME injection (instead of the older LH). The ME / COP setup is better overall, shame it's not an easy retrofit to a W124.
The function of the distributor as used in the E500E is merely to send the spark signal that comes from the LH control unit, to the appropriate plug/cylinder.
Based on the inputs of engine RPM and the battery voltage, the pre-programmed ignition maps in the LH unit's ROM memory provide appropriate dwell-angle information as well as the engine timing data maps.
Major inputs to the LH control unit include the TDC sensor (which informs the computer of engine timing); engine RPM (provided by an RPM sensor); and engine load as provided by the MAF (hot-wire mass airflow sensor, which measures the WEIGHT -- not the volume as the M117's KE-Jet system -- of air flowing into the engine).
Output is, as I mentioned above, signals sent at the appropriate time to each coil, which in turn supplies electrons to each engine bank's distributor & four spark plugs.
Cheers,
Gerry
Based on the inputs of engine RPM and the battery voltage, the pre-programmed ignition maps in the LH unit's ROM memory provide appropriate dwell-angle information as well as the engine timing data maps.
Major inputs to the LH control unit include the TDC sensor (which informs the computer of engine timing); engine RPM (provided by an RPM sensor); and engine load as provided by the MAF (hot-wire mass airflow sensor, which measures the WEIGHT -- not the volume as the M117's KE-Jet system -- of air flowing into the engine).
Output is, as I mentioned above, signals sent at the appropriate time to each coil, which in turn supplies electrons to each engine bank's distributor & four spark plugs.
Cheers,
Gerry
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