An old B&S article which may be of some interest.
http://www.omnilex.com/public/bmw78/boxloob.pdf
Oil thread.
Oil thread.
Cheers, Steve
Victoria, S.E.Oz.
1982 R100RSR100RS supergallery. https://boxerboy81.smugmug.com/R100RS
2006 K1200R.
1994 R1100GS.
Victoria, S.E.Oz.
1982 R100RSR100RS supergallery. https://boxerboy81.smugmug.com/R100RS
2006 K1200R.
1994 R1100GS.
Re: Oil thread.
In my airhead I use 20/50 Castrol, in my oilhead I use Liqui Moly full synthetic.
1974 R90/6 built 9/73
1987 BMW K75S
1994 BMW R1100RS
1964 T100SR Triumph
1986 Honda XL600R
1987 BMW K75S
1994 BMW R1100RS
1964 T100SR Triumph
1986 Honda XL600R
- George Ryals
- Posts: 510
- Joined: Tue Aug 03, 2010 10:22 am
- Location: Stone Mountain, GA
Re: Oil thread.
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.
Smile it's contagious!
'74 R90S, '67 /2 Conv w/sc, '66 R50/2
'74 Harley FXE, '72 Harley FLH w/HD sc
'69 BSA 441 Victor Special, '74 R90/6 Basket case
'85 R80RT wreck for parts
'74 R90S, '67 /2 Conv w/sc, '66 R50/2
'74 Harley FXE, '72 Harley FLH w/HD sc
'69 BSA 441 Victor Special, '74 R90/6 Basket case
'85 R80RT wreck for parts