Stainless, Bushed PRW Rocker Arms
Oil hole in the top is of no value, you want to get the oil to the rockers main friction point, which is obviously the bottom. Widest clearance between the rocker and the shaft will be at the top. If the oil can escape there first, then it will.
You then want to spread oil across the bush, that's where a small oil groove comes in. Then you need to make sure it's getting enough oil.
I also agree with Bakerlite.....as the bushing would benefit tremendously if it was
cut with a groove! Does the OP know if the main rocker shaft is made of some type
of stainless steel? I am now wondering what the Chinescans were/or are using for
the inner rocker bushing? There are many types of bronze out there..... and for
what it is worth, are they using 100% oillite bronze for the production of these
rocker bushings? IMHO, by me viewing the rocker shafts (I am 60yo in two mos) eyes
are getting worn out) but the pics do show some different heat coloring on many areas
of them, which makes me think, these bushings are not made out of 100% bronze?
Maybe, some kind of other ionized powdered metal, or some other, ferrous metal mixed in. IDK?? Something is going on! I will run this situation by my 6 different machinist friends, and see what they all have to say. I will check thread tomorrow, as I do not want a headache before bed tonight.
