Stainless, Bushed PRW Rocker Arms
Didn't you say they need banana grooves?
BTW I drove my car for about 2 years with X Heads and factory rockers with no issues.
Before putting Trick Flows on with PRW Rockers.
Some also suggest the oil hole is a bit too small in the Tf's
But really shouldn't matter because I doubled the oiling when I added pushrod oiling.
It was getting plenty of oil.
I think banana grooves would certainly help if not eliminate the problem altogether.
I'm Sorry if I have you mixed up with someone else.
Also I drove my car several thousand miles with the Trickflows and 273 Rockers with Factory Banana grooved Shafts with zero wear, with just through the head oiling.
So there's that too.
My personal Opinion is what you and a lot of knowledgeable people have said all along,
They need Banana grooves and possibly better bushings and roller tips.
Lastly Mike @ b3 said he did not find any bluing or any discoloration to my PRW Rockers or Shafts that would indicate heat like from a lack of oil.
Yes, I said you need banana grooves.
I get you drove it for a couple of years without issue. And all that time it wasn’t getting enough oil between the rocker and the shaft so it was slowly eating the bushings.
IMO, adding pushrod oiling was a waste of time. There is plenty of oil up there. The issue is the oil can’t get between the shaft and the rocker, especially with a hydraulic lifter. There is always an upward load on the rocker. That’s why the grooves are a must. Why PRW doesn’t get their head out of their asses on this deal is a bit baffling.
I’m betting 99.999% of the rockers they build have needle bearings on the shaft so they don’t take near the oil that a bushing does.
IMO, the transfer of bronze to the shaft doesn’t take enough heat to turn the shaft blue.
I have run some pretty high spring loads on unbushed aluminum rockers and and bushed ductile iron and steel rockers and they take a bunch of oil to keep them off the shafts.
I had an issue with some Crane gold rockers probably around 1989 or so. There wasn’t enough oil at the shafts and there was aluminum on the shafts from the rockers and nothing was blue because the aluminum melts before the blue happens.
Same with bronze bushings.
I would assume the shafts were junk after the first go around. The only way to know for sure is to get the shafts up between centers and indicate it in and run a dial indicator over it.
