I have a rebuilt Commando with Purple Shaft 284 set(including valve springs)+ Mopar Perf titanium retainers. Now the stock adjustable rockers won’t clear the springs or retainers. Allready cround off quite a bit. Which aftermarket rockers would?
I agree there Rusty. I ground on mine for clearance and still had to shim the shafts up to get close to correct. I wish I hadn't. I wouldn't mind installing some beehive springs and retainers. They are a lot smaller on the stem end.Grinding on any rockers is not a good thing at all. It's an indication the rocker shaft needs relocating. Mike at @B3RE can help you. After speaking with him and letting him fix me up with a rocker shaft relocation kit, there's no way in hell I'd ever grind on any rocker arm. It's not the correct way to do it, I don't care how long who has been doing it. Call Mike. He will help you out.
B3 Racing Engines LLC - Performance Engine Building and Mopar Valvetrains
Worn.....mushed out of round....or something.View attachment 1716137537
Is that rocker worn or just a shadow? Beveled edge?
If it's not some big race secret what beehive springs did you run on your heads?Titanium retainers usually have a bigger diameter to use with bigger diameters race springs. That appears to be part of the interference issue. Cool option but unnecessary. I like the beehive spring option if you can find one with the appropriate specs. Beehives solved the same problem on my Dart Sport.
I used Comp Cams 26056 beehives set up to have near 200 lbs closed & 400 lbs open. But this is on IHRA Crate Stocker engines with .474" lift, lots of duration, steep ramps and Schubeck/Smith flat tappet hydraulic lifters with a "composite puck". I did run about 160/360 lbs until I "accidently" found out I was getting valve float. I couldn't tell going down the track and was VERY lucky. It could have been a lot worse. After bumping up the pressures, car ran a little better and valve adjustments remained more accurate between checks.If it's not some big race secret what beehive springs did you run on your heads?