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beemererik
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Joined: 10/27/2006
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The camshaft on the R62/63 spins in two bushings. Doe anyone have any idea of how oil is supplied to the rear. The front appears to get its oil supply through a trough behind the front gear. I would imagine this trough gets it oil off of the front gear as it spins. I can find no oil path to the rear bushing in the top housing unless I am missing something.

It's possible the R52/R47 have the same setup but I have not been into one of those engines.

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Darryl.Richman
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The R52 has exactly the same

The R52 has exactly the same set up. Oil that is flung around the inside of the crankcase as the crank spins gets on the camshaft and cams, and some of it on the housing drips into that trough to lube the front bushing.

You're in luck because my R52 is all apart and I could take the attached photo. You can see that the rear bushing is grooved to allow oil movement between the bushing and the end of the camshaft. But also notice the groove that is cut into the case at about 4 o'clock in the photo (which is taken with the case upside down, so that's really about 10 o'clock in when the cases are together). I couldn't take a photo of the inside there, I can barely see in there with a mirror and a light. But I'm sure that there's an opening in there that allows oil that gets into that groove to pass through the visible holes drilled in the bushing, to provide lubrication to the bushing/camshaft.

Hope this helps!

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beemererik
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Hi Darryl, That is helpful. I

Hi Darryl,

That is helpful. I am curious if the design intent is splash lubrication to the rear bushing. The camshaft is hollow and it could be possible that oil could enter from the front of the engine and flow to the rear through the camshaft.

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Darryl.Richman
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Erik, I think the idea is

Erik, I think the idea is that oil gets splashed into that little opening next to the bushing and then drips through the three holes visible in the bushing, to lube the end of the camshaft. Doesn't the front end of the shaft stick all the way through to the timing gear? I don't think BMW was depending on any oil migrating all the way to the back.

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