Ticking noise, 383, can't locate the source

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jas0162 said:
The rockers all look ok on the pad where they push on the valves?
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Yes. The wear on the various points on the rockers all are consistent with each other, nothing worn out, or thru, or otherwise.

How would you be able to tell the rocker is hitting the spring retainer?

It's not obvious by looking at them, at least to me.

Problem is I don't know what to check next.
 
Have you looked closely at the valve springs themselves for a broken one? Remember, don't assume "good" because it's "new". If you find nothing, I think would see about upgrading the rockers. They were not made for that size camshaft.......even though it is a mild one. They need upgrading anyway, whether that'll solve the tick, I guess you can keep your fingers crossed.
 
I agree 100%, new doesn't = good, although it's sometimes easy to overlook.

Someone mentioned a cracked header, I'll check them again, and pull them if needed.

I'll check the springs closely.

Any recommendations for replacement rockers?

Also, I'm looking at all the pics I took so I can obsess over this when I should be working, does this retainer look off, as in not right?

I know pics aren't as good as being there, but I'm stuck at work.

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matthon said:
I agree 100%, new doesn't = good, although it's sometimes easy to overlook.

Someone mentioned a cracked header, I'll check them again, and pull them if needed.

I'll check the springs closely.

Any recommendations for replacement rockers?

Also, I'm looking at all the pics I took so I can obsess over this when I should be working, does this retainer look off, as in not right?

I know pics aren't as good as being there, but I'm stuck at work.

View attachment 1715363799
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I think I may see the problem. Can you get a better straight on shot looking directly DOWN at the valve tip? It looks like your sweep is falling off the edge of the stem.
 
Can't get a pic until later.

Sweep, as in the wear is more or entirely on the lower section of the valve?
Almost looks as if the retainer is showing the same wear pattern.

So if this is the issue, as the contact point between the rocker and valve move off center, down in this case, the valve is worn enough to create clearance, aka tick.
 
matthon said:
Can't get a pic until later.

Sweep, as in the wear is more or entirely on the lower section of the valve?
Almost looks as if the retainer is showing the same wear pattern.

So if this is the issue, as the contact point between the rocker and valve move off center, down in this case, the valve is worn enough to create clearance, aka tick.
Click to expand...

When you're able to get a better picture, make sure you wipe any oil off the top of the stems.
 
Yes like that. That's actually a lot better than it appeared earlier. DO all of them look like that?That's actually a decent pattern for a stock rocker, IMO. At least on that ONE.
 
I see different wear patterns on the rockers/rods.

Some rockers have a circle just above the hole, others show wear just below the top of the hole to the center.

Intake or exhaust, doesn't matter.

Also, they all have weird casting marks, I guess, two almost look like cracks but are not thru, one is level across it, the other one side is a bit higher on one side.

I don't think they're cracks though but I've been wrong before.

And I noticed the machine shop obviously made clearance for the pushrods.

Just wanted to give these another look before I slap it back together.

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20190715_190252.jpg
 
Yeah, I'm scared of the red circles. lol It certainly needs rockers. I don't see where anyone's asked, but do you have the rockers and shafts oriented correctly? You don't just "slap everything on".
 
Is it the light or do your retainers had “wear” spots on the top? Nothing should be rubbing on that
 
Oriented correctly, and everything kept in order of removal.
Slap was me being funny, or not I guess.

Retainer does not have a crack, or wear.
I noticed that the second I took the pick, it's just the flash of the camera on an oily surface. I was going for the best pic of the valve.

I don't see any wear on any of the retainers, and no wear on the rockers other than where they contact the valve, pushrod, and shaft.

Springs are not broken, inner or outer.

I really don't think the red circles are cracks. I've looked at them extremely close, nothing on the other side, unable to pull apart and expose a crack, they don't retain any oil after being wiped with a cloth, tried an led light on both sides in the dark.

On the one in the pic, it is slightly higher on one side, by the smallest amount, barely measurable, it looks folded over.
My thought is if it was cracking the higher material would have to be displaced from the other side.

Besides, the same roughness, crack looking, folded over material is also along the top edges, I doubt they're splitting in two.

I've studied these parts for days, nights, taking pics and looking at them at work, I cannot find any signs of abnormal wear, cracks, broken or bent parts, metal shavings, nothing.

I'm thinking I missed an exhaust leak, but yet it didn't sound like that really, and I can't find anything wrong with the headers.

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Hey,
Just read the whole thread, Hopefully Im not sending you guys in the wrong direction.....but sometimes if you are running a mechanical fuel pump, as it starts to fail, it jumps off the lobe on the cam and slaps back down. This can resonate to different parts of the engine making it tough to track. I find the stethascope tool with the pointed end to be helpful. or a long screwdriver. Sorry if this is off kilter or lame info....I have been fooled by a failing fuel pump before though. You might be electric.
 
jas0162 said:
Is it the light or do your retainers had “wear” spots on the top? Nothing should be rubbing on that
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I thought it was just reflections from oil......but lookin at it closer, you might be on to somethin.
 
#1 exhaust.
A very small mark on the rocker, I don't see anything on the retainer.
Looks like it was rubbing on the very edge of the retainer, but no evidence on the retainer.

Same for #3 intake.

None of these are in the pics above because it sounded like it was coming from the rear.

Is this enough for a ticking sound?

I'm thinking if I pulled the other side I'd find the same thing on at least one rocker, but I don't hear it there.

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Any contact at all between the rockers and retainers will make the ticking noise. Worse is the possibility of the retainer being pushed down enough to release the keepers which would be very bad.
Neil.
 
I feel like a Jonly Bonly from Boldly-go.

In my ppwk for the Comp cam, they recommend their roller rockers 1621-16, which are $700.
Everything else is the recommended Comp stuff from the ppwk I kept, just the rockers are stock.

Can I re-use the pushrods?

Any comments on these is appreciated:
COMP Cams Pro Magnum Shaft Mount Roller Rocker Arms 1621-16
 
matthon said:
A mechanic friend listened to it running, told me to bring each cylinder to tdc and push down on the rockers/lifters.
If there was a bad lifter, or lobe, I would be able to push down fairly easily, or the pushrod would be loose.

No can do.
Pushrods spin at tdc, no signs of being bent.

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"Pushrods spin at TDC". To me that indicates no preload on the hyd. lifters. Of course they are going to "tick"! With no adjustment on the rockers, the correct length pushrods must be used.
 
I see. I was able to spin the pushrods, but they didn't spin freely. Probably the same thing, just wanted to clarify.

Now I need to learn myself on adjustable rockers.
Should probably replace the pushrods.
 
matthon said:
I feel like a Jonly Bonly from Boldly-go.

In my ppwk for the Comp cam, they recommend their roller rockers 1621-16, which are $700.
Everything else is the recommended Comp stuff from the ppwk I kept, just the rockers are stock.

Can I re-use the pushrods?

Any comments on these is appreciated:
COMP Cams Pro Magnum Shaft Mount Roller Rocker Arms 1621-16
Click to expand...

Those are badass but totally unnecessary IMO. You should contact Mike at B3 and see what he recommends. He can also help you locate the rocker shafts in the right place.
 
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