Nothing too exciting. Mostly my personal rants and raves anlong with information about my racing endevours, bicycles, motorcycles, project cars, life, the universe and everything.
Saturday, November 22, 2014
BMW m42 serpentine belt conversion
Place holder for the serpentine belt conversion information
The goal is to go from the antiquated v-belt arrangement currently on the car to an e36 based serpentine belt arrangement. searching around the internets and realoem.com looks like hardware from the 94+ e36 318's has a high likelyhood of working very well for this. If only I could find one in a salvage yard locally!
This photo is supposedly from an E36 318i. It shows the front of the engine and from this photo I can tell that the oil filter can is the same, the thermostat housing is the same, and other small items are similar to the E30 engine bay that I am working with. I am going to order a set of cheapo ebay silicon radiator hoses for the E36 and see how they fit up. This photo also gives me a lot of confidence in the conversion working.
The water pump is the same part number for both m42 and m44 engines. The water pump pulley is different, so a simple pulley swap should be enough for the water pump.
The alternator obviously needs a different mounting system, which I believe is a large aluminum cast piece that bolts to the block in the same location as the comparable piece for the v-belt arrangement. the photo above (of the e36 m42 engine bay) further solidifies my confidence in this working. AS of this writing I have not determined if the alternator pulley can be swapped or if I actually need to source a different alternator for mounting purposes.
The E30/m42 alternator is 12311721921
the e36/m42 alternator is 12311739421 (through 12/93)
and the e36 94-on alt is 12311247310
the Z3 uses 12311247488 which is labeled as 80A compact.
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