datadavid said:
Thats what the idea was anyway
I was thinking (I know, always a bad move on my part) A 'Y' hole will 'sweep' as con rod angle changes. I have seen motorcycle con-rods with a boss cast in and drilled for oil squirting upwards (I think maybe 80's Yamaha FZR600?) The shell bearing kinda 'blocked' crank-pin oil feed hole at TDC but lined up about 20~30 degrees after TDC so would be pointing almost straight up?
Now I've slept on it, I may strip CB360 crank (already have XS 650 crank in pieces)
May not do any good as they are low pressure motors but centrifugal force may sling extra oil up inside piston?
XS 650 oil feed is is 'wrong' place to fit oil jets - very low aross front of crankcase(Yamaha use oil jets squirting on big ends and 'two-stroke' rods with slots) but CB360 has oil feed across top rear of case so oil jets could possibly be fitted?
There's probably a ton of useful information buried in other people's threads but only a few people will ever see it.
The only reason I know anything about aircraft piston engines is the fact someone asked me about radial and rotary engines almost 40 yrs ago.. Couldn't find much information so bought a couple of books which covered all types of aircraft piston engines. (I had a bit of spare cash for such things before I got married

)
............and now we return to our regular program ;D