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Oil thread.
Posted: Sat Oct 08, 2016 7:42 pm
by SteveD
An old B&S article which may be of some interest.
http://www.omnilex.com/public/bmw78/boxloob.pdf
Re: Oil thread.
Posted: Sat Oct 08, 2016 9:54 pm
by daz
I use Oilzun!
Re: Oil thread.
Posted: Sat Oct 08, 2016 9:54 pm
by daz
Make that Oilzum!
Re: Oil thread.
Posted: Sun Oct 09, 2016 6:29 am
by hal
Great, thanks!
Re: Oil thread.
Posted: Sun Oct 09, 2016 10:15 am
by jagarra
In my airhead I use 20/50 Castrol, in my oilhead I use Liqui Moly full synthetic.
Re: Oil thread.
Posted: Mon Oct 10, 2016 3:35 pm
by George Ryals
SteveD, that's a great schematic of the oil system of an airhead. However, there are two other oil passages that are missing from the drawing. I don't know if all airheads have them, but each cylinder spigot hole in the case has a tiny oil passage maybe 1.5-2 mm dia that runs down from the center of 13 & 14. These oil passages match up with a groove around the cylinder spigot . There is a tiny hole from the groove to the interior of the cylinder that oils the piston skirt.