Originally Posted by bugeyes
1- Single oil supply hole on main journal which would be used with a full groove main bearing shells.
-single groove seems to be the way to go for high rpm applications
2- Hole drilled so oil enters the oil hole in direction of rotation, this makes oil pickup easier (doesn't have to make a 90 degree turn in order to enter the crank)
-is the hole 90* to the bearing surface? pardon...i havent seen a suby crank.
3- back side of oem hole relief welded up
-could you take pics or explain....i dont know what this is?
4- Oil hole does not pass through the centre of the crank therefore reducing the effects of centrifugal force acting against the oil flow
-where does it go if it doesnt go through the center of the crank? i dont follow. please excuse me...im trying to see/learn.
5- Oil lead in groove in direction of rotation, this gives the oil time to enter the groove before being scooped up by the hole.
-makes perfect sense!
6- Oil supply hole same diameter as oem 5.5mm.
7- New oil hole drilled to intersect the original hole approximately at the web.
-again...dont know exactly what you're talking about. where is 'at the web'?
8- Pressed in a steel pin to block off the original cross drilled oil hole.
-just dont want the pin to be too heavy.
I think this proves it is possible, I used one of the old hole positions so I didnt have to drill the bearing surface with a new hole.
Looking at this design I feel its a much better option for high rpms.
Whats your opinions on this design
^^^i like the design. got any more pics of the crank?