Question - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 05-03-2003, 05:51 AM
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OK... are the m20 and m50 engines a dry sump system? Ive never been able to get any articles if they are or not but from the looks of the set up of my engine it looks like a dry sump. But on the e36 the setup looks a lot different but still similar to a dry sump. If it is a dry sump setup why did they put it in such an ineffecient place? It could be a lot smaller, lower, and more to the front for better wieght distribution and lower center of gravity. Anyone know?

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#2 (permalink) Old 05-03-2003, 05:54 AM
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I don't know those specific engines too well, but I can't imagine a dry sump system on a stock street car. It just doesn't make sense.


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#3 (permalink) Old 05-03-2003, 05:59 AM
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Sure it does. Honda does it in most of their JDM and mugen motors. I figure BMW would do it too, if your gonna have a car that handles as good as possible, then your gonna want to have a dry sump so you have a lower center of gravity.
If you look at the bottom of an e30 the pan is mounted at the extreme front(bottom) of the engine bay and is only 5"x 5" x 5" Maybe its not but then again im just trying to find out

<span style='font-family:Geneva'><span style='font-size:14pt;line-height:100%'><span style='color:red'>Fox</span></span> <span style='color:gray'>the Pirate</span>
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#4 (permalink) Old 05-03-2003, 06:06 AM
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I was thinking more in terms of engine reliability, because you get oil starvation issues with dry sump systems under heavy lateral G-loads. The race cars that use them have an auxiliary oil pump that pressurizes the sump to eliminate that problem, but it's a much more mechanically complex and therefore potentially unreliable system. you don't get enough of an advantage on a street car in terms of improved polar moment and such to warrant that kind of system.

just my $.02


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#5 (permalink) Old 05-03-2003, 06:09 AM
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True.... ok... yea now it just bothers me why it looks so much like it. Bah i gotta go find a write up somewhere. Thanks trig

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#6 (permalink) Old 05-03-2003, 06:12 AM
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no prob dude


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