...With the ductile adjustable rockers on the shaft the oil pushes out of the bolt not thru shaft. It's like the ductile rockers are creating back pressure.
Hmm...explain this further please.
Which bolt is it pushing through? Are you referring to the pushrod adjuster? Different rocker arms have different arrangements for oiling, some will have a passage right through to roughly where the pushrod end meets the adjuster...others that I have seen have a passage much lower that looks like it should be squirting the oil onto the pushrods.
The Crane 1.6 ratio ductile iron rockers that I have here have:
1) passage right on top of the rocker arm, that's intended to oil the spring and teh rocker pad to valve tip
2) passage right to the adjuster bolt, but because of machining this passage continues out to the outside of the arm, so I suppose the pressure would push some of the oil through
I ran the Cranes for a little bit, but being a 1.6 ratio I ended up running into geometry problems (pushrods would not clear) and never used these further.
Can you post any pics?
Ahh, one more thing: shafts themselves? What kind are these? Do they have any banana groves in them?
