r51/3 oil transfer

[fidel_98_99]

On my Bmw r51/3 1952 i can't understand how is lubricated,how it is oiled.
Watch the pictures and tell me how the oil circulates

[fidel_98_99]

[fidel_98_99]

2
right side

[fidel_98_99]

3

[fidel_98_99]

4

[fidel_98_99]

is this right?

[fidel_98_99]

Do you agree?

http://w6rec.com/duane/bmw/cylinder/index.htm

[Rütz]

No.
The oil comes through the pushrod pipes to the cylinderheads and returns(!) through the bores 9,8 -> 7 -> 4 -> 6 -> 2,3 -> into the sump.

The bores 1 and 5 are for extra oiling the upper cylinder wall of the left cylinder, because this wall lays in the "slingoil" (Schleuderöl-) shadow of the crankshaft.

Understandable?

Rütz P(idgin)

[rolf.soler]

Yes. From 7 (the 2 holes at the end of the banana-shaped groove) the oil goes through an oblique hole in the bigger holes lateral to these 2 holes; in these holes the stator sleeves (Ständerhülsen) are inserted from above, those pipes on which the rocker is mounted. These sleeves have a groove at the lower end  around which flows the oil coming from  the holes #7. In this groove in turn are 2 small holes that let the oil enter into the sleeve. In the sleeve is the cylinder head bolt, but it is a bit thinner than the inner sleeve diameter, so that the oil rises in the slit between bolt and sleeve and it can go only outwards, so it arrives at the rocker arm bearing. That's the thing that has to be oiled. Backflow as described above

[Rütz]

  Rolf?
You are talking about the mono-cylinders, arent you?
But Fidel asked for a boxer, which oil-circuit is just the opposite way and which have no "pressure lubrication" of the cylinderheads. They have no oil in the sleeves and the oil bore in the cylinder is just a "oil return line" (Ölrücklaufleitung).

Rütz

[rolf.soler]

oops.
forget everything above...