How does the oil circulate to get up to the cam lobes?

[Mas (UK)]

Does anyone have any pics showing exact position of oil holes or paths in the valvetrain for a 525-m50 engine? Or even a diagram showing the whole oiling system for our cars, if anyone has a copy would be very helpful.

Thanks,

Mas

[yaofeng]

I did not pay much attention when I did my 525. I think the oil came up from the holes next to the inboard studs on the head. The lifters and cam seats have matching holes to get lubrication.

http://i21.photobucket.com/albums/b274/yaofengchen/BMW_95_525i/DSC_1640-1.jpg

[Bill R.]

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Does anyone have any pics showing exact position of oil holes or paths in the valvetrain for a 525-m50 engine? Or even a diagram showing the whole oiling system for our cars, if anyone has a copy would be very helpful.

Thanks,

Mas