Did I wipe a lobe or ???

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Max it’s funny you mention that. I had a decent amount of play with those stamped rockers on the shaft. See video below


I’m not saying this was the cause of the sound we hear on the first video but dang that can’t be good.
 
The pushrods actually angle slightly, and this pushes each pair of rockers towards each other when it's running. I used stock rocker gear on my 451, and it ran low 12s in a RR, at a high altitude track. You have adjustables, right?
 
The pushrods actually angle slightly, and this pushes each pair of rockers towards each other when it's running. I used stock rocker gear on my 451, and it ran low 12s in a RR, at a high altitude track. You have adjustables, right?

Yes. Still been trying to get these to center over the valve stem though. What gives?
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Looks like the #4 exhaust rocker arm just needs to be closer to the bolt, right? Why not grind a little metal off the edge of the hold down where the bolt goes thru? I'm looking at # 4 ex valve , center of picture. That would move it over some. Not sure if that is a safe practice, I've never done it. Or swap around hold downs until you get one that lets it line up on the valve stem. Anybody ever had this problem?
 
Yea there’s a good many rockers like this. Hard to tell cause of the angle. I’ve got a pack of shims coming and speaking with an engine builder today said he sometimes has to file/grind those hold downs to help line em up.

Not sure if it’s the correct way but it’s the way I’m going to try.
 
Yea there’s a good many rockers like this. Hard to tell cause of the angle. I’ve got a pack of shims coming and speaking with an engine builder today said he sometimes has to file/grind those hold downs to help line em up.

Not sure if it’s the correct way but it’s the way I’m going to try.
Can't see that shims are going to help on the ones I can see. You need to go closer to the bolts, not further away. At least on the ones I can see. Shims will move it away from the bolt.
 
Can't see that shims are going to help on the ones I can see. You need to go closer to the bolts, not further away. At least on the ones I can see. Shims will move it away from the bolt.

Correct. I’ll be clearancing enough to put a small shim in place so I don’t rub a groove on the rocker.
 
Got the new pushrods in and Everything together and lined up. Got lash set and ready to go. I’ve got a buddy coming to help me keep watch on everything while it’s bumped over to check rotation ready to get this buttoned back up and see what happens.

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Max it’s funny you mention that. I had a decent amount of play with those stamped rockers on the shaft. See video below


I’m not saying this was the cause of the sound we hear on the first video but dang that can’t be good.


That side play is perfectly normal for stock rockers.
 
If you pull the spark plugs before you spin the motor, it's much easier on the starter and battery. It will prob even build oil pressure if clearances are good. Then you can free wheel the motor over for a minute or so, while you're checking everything out. If a lifter isn't adjusted, or not pumping up, you will prob even hear it clicking when doing this.
 
Got around to checking everything tonight. I have a few lifters that seem to rotate throughout the whole cam rotation and others that rotate when the cam lobe peaks. Is this normal? or could I have set the last to tight? I got the rockers at 0 lash then 1/2 turn and tighten down.
 
When you look at a used cam, you can see where the lobe base circle only contacts half of the lifter, from about the center to the edge. This is what makes the lifter rotate, as the cam moves across it, and helps it to wear evenly. This may extend up the ramp a little, but by about a fourth of the way up, the entire lobe should be contacting the lifter base. This is where the most pressure is, from about 1/4 lift to full lift. When I get back from Phoenix, I'll take a pic of a used stock cam lobe to show what I mean.
 
Got around to checking everything tonight. I have a few lifters that seem to rotate throughout the whole cam rotation and others that rotate when the cam lobe peaks. Is this normal? or could I have set the last to tight? I got the rockers at 0 lash then 1/2 turn and tighten down.

Were the camshaft lobes each on the base circle when you made your adjustment?
 
Were the camshaft lobes each on the base circle when you made your adjustment?
Yes. I just wasn’t completely sure of how much they should be rotating at cranking speed. They all had rotation but like I said a few spun throughout the whole cam rotation and others kind of bumped 45* at the peak of a lobe.


Why? They come the correct width to install where they are designed.
These didn’t come with the rockers. I bought the rockers only from a member here and used my hold-downs from stamped rockers. Once I removed the nubs virtually all the rockers were centered on the valve stem.
 
Oh so the rockers are centered correctly now? I somehow missed that in this fiasco.
 
I think as long as there is some rotation on each lifter, you should be ok. Just thought it's strange that some rotate only at full lift. They usually rotate at bottom of lobe.
 
I had the same problem with those spacers pushing the rocker to the side of the valve stem. Touched them up on a grinder until they were perfectly centered. Mopar engine builder advised that practice was commonplace. Hope he was right.
 
Yea that’s what I did. Got everything put back together and started up this weekend. Carb is running so rich plugs loaded at idle and it will barely run long enough to figure anything out. Off to get that sorted somehow...guess its time learn how to properly tune a carb!!
 
***** Side Note****
I'm running schumachers and notice on other peoples set up they have way more clearance on the passenger side than i do. I can even get a finger in between the header and the fender and they've baked the paint off on that side from break-in.

Is there something I'm missing here to shift the whole engine over towards the driver side?
 
Figured I'd throw out an update on progress.
I got all of my stuff put back together and at the same time I was having a issue with my carb running crazy rich at idle and it wasn't responding to anything. I broke down and sent if off to Dominic at Thumper Carbs so he could work on it for me. I got it back within a week or so and got it back on. I ended up getting super busy with work and didn't have time until this week.

Holy crap guys Dominic did an amazing job on the carb and it's crazy responsive now. I had a few issues with spark plugs and AndF helped me out in a pinch. I got those thrown in today with some fresh fuel and man this engine is a whole other beast now. I couldn't be more impressed with Dominic and how helpful he was/is as well as is customer service.

check it out!!!


***Edited to add: these are the spintech 6000 mufflers. They are definitely louder than this video sounds
 
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