Spring/Keeper interference with Rocker

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The rocker arms are oiled by the rocker arm shaft if you rolled the shaft over you would see the oil holes., your push rods are solid. Is the pivot pin broken in the fuel pump or not crimped in correctly?
 
nm9stheham said:
The rockers on these LA engines are oiled from the shafts, which get oiled through the block. (Magnums oil through the lifters and pushrods, but not LA's.) But it sure looks like plen-tee of oil.
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Gotcha - I assumed the oiling from the shafts simply kept the ID of the rockers OD of the shafts lubed, and I thought the pushrods oiled up to the top end also - Thanks for the lesson. I figured the lifters simply 'squirted' oil up the push rods to the rockers for additional oiling. Again, thanks for the clarification.

nm9stheham said:
If you are pushing on all the rockers to try to find a soft lifter, or other loose valvetrain part, you have to tun the engine for a few minutes to get oil in the lifters, stop the engine, and rotate the engine several times by hand and push on each rocker when its lifter is in the 'valve closed' position. (I.e., each lifter is on its cam lobe's base circle.) If you test like that, and all are hard, then you are good.
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I ran the motor, got it up to temp to get the tick to start, shut it off, pulled the cover, and checked each lifter with valve closed; all were solid and unable to be pushed, meaning they were all pumped up.

nm9stheham said:
I got no audio on the video, and the video did not show the actual sound waves in the air.....
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That's odd - I just clicked the link again to try for myself, and I get the audio.. weird.
 
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69FBCuda said:
The rocker arms are oiled by the rocker arm shaft if you rolled the shaft over you would see the oil holes., your push rods are solid. Is the pivot pin broken in the fuel pump or not crimped in correctly?
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nm9stheham mentioned the same thing about the oiling, thank you guys for clarifying.

Does not appear to be broken, and intact. Just seems like an excessive amount of side-to-side play, and a weird wear groove in the arm of the pump, leading me to believe it is potentially hopping around in there. Putting a new one on regardless, I'll pick it up tomorrow.
 
Lik said:
I ran the motor, got it up to temp to get the tick to start, shut it off, pulled the cover, and checked each lifter with valve closed; all were solid and unable to be pushed, meaning they were all pumped up.
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Well, that sounds pretty dog-goned good to me. Sorry, I could not hear the video to see if the sound made some other thought jump out.
 
Good eye, I was wondering the same thing; They have not been removed from the shaft, so they're in the order they have been for 10+ years minimum, but it still stood out to me.
 
All 4 pairs showing are correctly oriented... LT on the left side of a pair and RT on the right side of a pair. Actually makes sense!
 
Were you able to get a picture from over head of the rocker assembly installed showing the positioning of the rockers
 
Ok, So , new fuel pump installed, knew that was a long shot, but still didn't seem right, so I replaced it.

Installed everything back up, ran it still ticking - the same. pulled valve cover ( and broke a plug wire while at it, pulled the damn end right out of it - ordering new wires - check)

Wen through each lifter (again) with valve fully closed. No bleed back, lifters are all still primed.

What is everyone's thoughts on a broken helper spring? hard to see in the coils of these things, but tempted to pull a cylinder at a time to check springs. It looks like there a rubber piece inside most of the springs or are they tall valve seals?.... I could just be seeing things at this point though....

Thoughts?
 
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You need a stethoscope.
Rag in palm..push on each pair of rockers over the pushrod side to check for clicky lifters in the future while its idling.
Just line a rag and or cardboard to the oil from dripping.

You should be able to pin it down with stethoscope however.
One thing that is hard to locate is a crack in the underside of a header at the flange..it eluded me for years till I took them off for new ones and did a close inspection.
 
MOPAROFFICIAL said:
You need a stethoscope.
Rag in palm..push on each pair of rockers over the pushrod side to check for clicky lifters in the future while its idling.
Just line a rag and or cardboard to the oil from dripping.

You should be able to pin it down with stethoscope however.
One thing that is hard to locate is a crack in the underside of a header at the flange..it eluded me for years till I took them off for new ones and did a close inspection.
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Wires will be here Wednesday. I'm going to try and repair this one in the time being in order to do this test; Again, however, all of the lifters are primed and pumped right up. I am unable to push back on the push rods at all right now; what would I be looking for differently while running?

I do have a stethoscope also; I haven't used it while the valve cover is off though.
 
Also ordered some manifold gaskets - this doesn't look happy;

IMG_20200327_181359681.jpg


IMG_20200327_181353824.jpg
 
Lik said:
Also ordered some manifold gaskets - this doesn't look happy;

View attachment 1715495039

View attachment 1715495040
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Lik said:
Wires will be here Wednesday. I'm going to try and repair this one in the time being in order to do this test; Again, however, all of the lifters are primed and pumped right up. I am unable to push back on the push rods at all right now; what would I be looking for differently while running?

I do have a stethoscope also; I haven't used it while the valve cover is off though.
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Rocker noise from wear, basically any play, side or whatnot.
That gasket leak is definitely going to make noise. Good move. What made you put that off till last?
 
MOPAROFFICIAL said:
Rocker noise from wear, basically any play, side or whatnot.
That gasket leak is definitely going to make noise. Good move. What made you put that off till last?
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The sound just sounds so mechanical that i pushed the exhaust off... still no definitive blow through, but definitely a leak.
 
GUYS!!!!!!!!!! I think I found it!!!!

Appears to be a bad rocker; She's blown out. Motor stopped perfectly for me to finally see it. Cyl4, Int rocker is gone.

It's got a weird notch to it.

Going to re-prime the lifter and see if it still does it.

See video:
https://photos.app.goo.gl/GgDZ1UUc63QdRjZEA

Next order of business... Budget rockers, or OE replacements? This is not a big HP machine, nor will it ever be. It is a family cruiser. Suggestions?
 
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Lik said:
The sound just sounds so mechanical that i pushed the exhaust off... still no definitive blow through, but definitely a leak.
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Enough to make a small click noise.
Use copper high heat sealer on the gasket when you button it up.. n dont forget the end bolts that go into water.
 
MOPAROFFICIAL said:
Enough to make a small click noise.
Use copper high heat sealer on the gasket when you button it up.. n dont forget the end bolts that go into water.
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You're talking the very front and very rear bolts? Those stayed in, so I guess their siliconed in nicely. If they come out, I'll re-seal, otherwise I'll let them be happy
 
n the video is that hold down bolt loose?
stock rockers should be fine
mark the way the shaft notches are
check the rest of your rockers keeping the in orider
check the cups and check the shoes and where they ware on the shafts
check the shafts
need new contact rocker arm specialists in anderson ca
check the ends of your pushrods
I would not use new rockers with worn pushrods
cheers
 
Wyrmrider said:
n the video is that hold down bolt loose?
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No, it is tight, but i turned the motor over numerous times, and this lifter started de-priming; assumed to be from being beat by the notchy rocker

Wyrmrider said:
stock rockers should be fine
mark the way the shaft notches are
check the rest of your rockers keeping the in orider
check the cups and check the shoes and where they ware on the shafts
check the shafts
need new contact rocker arm specialists in anderson ca
check the ends of your pushrods
I would not use new rockers with worn pushrods
cheers
Click to expand...

I will pull them apart now, and post pictures of any proof of wear. This is the only on that shows some weird play, and putting the stethoscope on it while cranking to motor, it is very apparent that is is coming from this one. Also, I would most definitely get new shafts if replacing rockers.

Thank you
 
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I can pull a set tomorrow morning and ship them to you if you need some . There is a 75 360, 69 318, 68 273, and some other 80's 318 and plenty of magnums where I'm at to pull from.
 
MOPAROFFICIAL said:
I can pull a set tomorrow morning and ship them to you if you need some . There is a 75 360, 69 318, 68 273, and some other 80's 318 and plenty of magnums where I'm at to pull from.
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Thank you so much, I will let you know; doing a little more diagnosing before jumping to conclusions.
 
Lik said:
No, it is tight, but i turned the motor over numerous times, and this lifter started de-priming; assumed to be from being beat by the notchy rocker
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If you mean by 'de-priming' that that lifter starts to leak off, it does not seem like it should do that. The rocker may be able to put more pressure on the lifter when it is cocked, than you can by hand. But it won't hurt to replace that one rocker and see. It'll be interesting to see the shaft surface under that rocker.

You do know you can pull the lifters out with the stock heads with the right tool?
 
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