That's why its very small. Just big enough to. Pressure rise the shafts and not damage the main bearings from bleed off and always use a hv pumpYou have to be very careful if you do this.
That's why its very small. Just big enough to. Pressure rise the shafts and not damage the main bearings from bleed off and always use a hv pumpYou have to be very careful if you do this.
Thank you for your comments.May not have anything to do with it but when I got my PRW 1.6 rockers I stripped them down and ran them through the ultrasonic tank. Then I still had to clear every oil port hole with a wire. I’d say 30% of them were packed with chips or crud. I cleaned the shafts out as well as I could without removing the plugs but I may go back and do that again because I haven’t installed them yet. If yours weren’t cleaned out before they were put in you could have restricted oil flow on some. Either way with any of these parts it’s important to pull them down and clean them out because manufacturers are taking every shortcut that they can to save a buck.
I also don’t like the color of those bushings and the deposit on the shaft it almost looks like there’s too much copper or wasn’t blended well so it could be an issue with the material
As I said a lot of cams have a full groove journals now like Rubens cams does.I built the Engine with X Heads and stock non adjustable rocker arms and shafts
2 years before swapping to Trick Flows with PRW Rockers.
And had driven it about 20k Miles.
No problems with valve train at all.
The oil hole in the Trick Flow head is much smaller then factory, but they say it's plenty.
If it were a magnum with Trick Flow heads
All they get is pushrod oiling
The PRW Rockers are made to work with both LA and Magnum Engines.
So adding pushrod oiling to this 340 it's getting double the oil.
The side clearance was set at .010
Rat,
You have given no proof that grooves are reqd in rocker shafts, just your opinion. Do you have any test results, such as rockers tested with grooves...& without?
Pictures, a link, whatever you like. Some proof of this statement you made in post #52: The shaft MUST have grooves for hyd lifters [ capital letters in original ].
He's already got pictures of what happens without nanner grooves right in this thread. I don't need more proof.What do you want, pictures? How about you prove they don’t work.
He's already got pictures of what happens without nanner grooves right in this thread. I don't need more proof.
Well aren`t they special...Just received this email from PRW
That's the nicest **** off I ever read.Just received this email from PRW
View attachment 1715983731
Exactly. Look at the small contact area just on the bottom and the area on the top where the oil can puddle. The non adjustables get over oiled it seems.It's easy to understand what the grooves do. They allow for a larger contact area of oil between the rockers and shafts. The old style stamped style paddle rockers don't need that because they have much less area of contact. The factory adjustable rockers or any other rocker that has full contact needs the grooves. What's not to understand? Just because "I tore one down that didn't have grooves" that doesn't mean it was right.
Not sure what that means?I get the sense some think they have recourse with everything and anything. Nope, you have been misled!
Fixing to buy rocker arms myself…… It will not be PRW’s !!
Didn't you say they need banana grooves?I’d buy them again in a NY second. He’s got oiling issues.