Boxerworks.com

On the subject of oversized oil pans: a number of years ago my service manager returned from BMW Service School and told me he had been told of a test that BMW made of oil temperatures in oem pans vs oversized pans. The result was that the core temp of the oil in the oversized pans was actually higher than that in the oem pans. Perhaps that rule wouldn't apply where cooling tubes exist.

...my service manager returned from BMW Service School and told me he had been told of a test that BMW made of oil temperatures in oem pans vs oversized pans. The result was that the core temp of the oil in the oversized pans was actually higher than that in the oem pans....

Interesting (if questionable,vague, and unspecified) test results.
For example, no mention is made as to which "oversized pan" or which "OEM pan"
were the subjects of this testing.
Indeed many variations of (increased capacity) sump pans were produced
from the lowly Lufty to the elegant magnesium Fallert ...

Especially interesting, too, in light of the fact that BMW must perhaps then be credited
with patently ignoring those very results
given the successful efforts of BMW factory engineers
to enlarge the capacity of the sump-pan several times
during the course of (air-cooled flat twin) production
and most notably in 1981.

170-degree, high cam,bevel drive 4-valve Boxer prototype.
Complete with a vertically split crankcase, blade-type conrods –
& large magnesium race-spec windage oil tray.
The Fallert FM1000, built by Werner Fallert, 1978:

But then, what might Werner Fallert know about operating oil temps, crankcase pressures,
or BMW performance building/tuning, eh ?)

Thanks for reminding me of yet another dream bike Vanzen.

It appears that Werner tried an oil pan extesion as well as his ubber cool monster pan.

Edit to add spelling errors.

I have always been a fan of a modest amount of extra oil. I run 1 1/2 quart extra oil pans on my VWs and have never ever seen a downside. A well built engine may be able to get by without extra oil but it gives a margin of safety, if only from the standpoint of being much less likely to run low on oil. And if those tubes running through the extra oil don't cool it, wouldn't it be a great place for some LED lights for "effects"?

Chuey

bbelk wrote:She is cute:




But what if you and she don't agree on what gear you should be in?:

Oh, now I get it. I hadn't looked at the pic of the bike closely enough to understand that. I was thinking of a tandem bicycle where the stoker can have objections to the gear chosen by the captain.

Those are some rearsets of note!

Chuey

she IS cute! is that Penelope pit stop? Like the bike, too. That the oil pan I sold you?

twist wrote:she IS cute! is that Penelope pit stop? Like the bike, too. That the oil pan I sold you?

The pan came with the bike when I bought it back in 1990. I did buy a deep R100 pan recently that I plan to use next time I change the gasket.

bbelk wrote:She is cute:

Don't I know it....a lot of miles but still fun to.....Oh wait, we're talking about my wife.

But what if you and she don't agree on what gear you should be in?:


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She's only 5'2". Her feet barely reach the pegs. She sits upright, so she'd really have to point her toes to get to the shifter or brake.