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Collapsed hyd. lifter?

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hotrod56cars

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« on: January 07, 2008, 03:39:41 PM »
Is the middle lifter in the pic below collapsed?

What can I do to fix the existing lifter?

There are three cylinders in each lifter, in the lifter that looks different the center cylinder is at what looks like the bottom and the center cylinder rises and falls with gravity.

Thanks
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Brad @ SCJB

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« Reply #1 on: January 07, 2008, 04:36:51 PM »
maybe a broken spring?

take it apart and see whats goin on inside.
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jet boat performance

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« Reply #2 on: January 07, 2008, 04:59:42 PM »
Broken spring (like brad said) galled ,dirt ?? Take the snap ring off and carefully rap it on a hardwood block ,see whats insideTom

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« Reply #3 on: January 07, 2008, 05:12:39 PM »
Lifters are cheap, buy a whole new set.

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« Reply #4 on: January 07, 2008, 05:43:01 PM »
Lifters are cheap, buy a whole new set.
Yeah , make sure they are solid lifters too so that dont happen again.  ;)

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i dont but im all for stuffin shit in her ass to make her go away :-*

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« Reply #5 on: January 07, 2008, 10:06:45 PM »
Lifters are cheap, buy a whole new set.

But wait - on hotdrama.com they said you couldn't *ever* run new lifters on an old cam!
Sorry couldn't resist! :-)


Yes, I would say it is probably a broken or malled spring. The question is why did it happen - if it is from too much spring pressure, now would be the perfect time to go solid lifter, assuming you have an adjustable valvetrain (don't know what engine that is out of).  Just make sure if you replace that lifter that you break it in with plenty of assy lube, zinc additive, 2500-3000 RPM for the first 20 min, etc . No different if just one or 16 lifters, need to break it in the same.
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hotrod56cars

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« Reply #6 on: January 08, 2008, 09:23:12 AM »
My plan is to buy a new lifter and swap the guts so that the wear pattern isn't changed.

Opinion's?
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« Reply #7 on: January 08, 2008, 09:27:12 AM »
My plan is to buy a new lifter and swap the guts so that the wear pattern isn't changed.

Opinion's?

Is it a mild cam? I would just buy a new set for $30 and use all new, unless like SpeedyMopar said the spring pressure might be too high?

Would be niced to check your installed height and find your seat pressure from that one lifter, might be too stiff possibly

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« Reply #8 on: January 08, 2008, 09:31:42 AM »
It's an Olds 455. Almost everything in the engine looks like it's got less than ? say 20 hours. The cam's lobes are mostly all black, there is no discoloration on the bottoms of the pistons or on the rods and crank. The combustion chambers are black but there are no built up deposits. The intake looked brand new in it's runners. The cylinders show a fresh honing. The piston tops are mostly a dark brown looking color.

Found one collapsed lifter and the bearings were trashed.  ?  Ran out of oil at high RPM's due to the Olds not allowing the oil to return to the pan quick enough is my guess but I have no idea what I'm doing in the first place soooo... BTW, I bought the engine as it is and I don't know it's history.

Is it a mild cam? I would just buy a new set for $30 and use all new, unless like SpeedyMopar said the spring pressure might be too high?

Would be niced to check your installed height and find your seat pressure from that one lifter, might be too stiff possibly

I don't know anything about the cam (mild, 3/4 race, etc...). Anyone know how lifters are adjusted on an Olds, it's got this funny aluminum pivot thing joining every 2 rocker arms together.
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KonaCole

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« Reply #9 on: January 08, 2008, 10:26:06 AM »
HotRod,
From what I was told, you torque the rockers down to factory specs and you are done  ;D
I didn't do it... ok, it was me.

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« Reply #10 on: January 08, 2008, 11:31:39 AM »
It's an Olds 455. Almost everything in the engine looks like it's got less than ? say 20 hours. The cam's lobes are mostly all black, there is no discoloration on the bottoms of the pistons or on the rods and crank. The combustion chambers are black but there are no built up deposits. The intake looked brand new in it's runners. The cylinders show a fresh honing. The piston tops are mostly a dark brown looking color.

Found one collapsed lifter and the bearings were trashed.  ?  Ran out of oil at high RPM's due to the Olds not allowing the oil to return to the pan quick enough is my guess but I have no idea what I'm doing in the first place soooo... BTW, I bought the engine as it is and I don't know it's history.

I don't know anything about the cam (mild, 3/4 race, etc...). Anyone know how lifters are adjusted on an Olds, it's got this funny aluminum pivot thing joining every 2 rocker arms together.

If it ran out of oil at high RPM's and wiped out one lifter - do you think that that one lifter was the only one that ran out of oil? Replace them all....my $.02
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hotrod56cars

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« Reply #11 on: January 08, 2008, 12:02:12 PM »
If it ran out of oil at high RPM's and wiped out one lifter - do you think that that one lifter was the only one that ran out of oil? Replace them all....my $.02

Does the scenerio I described cause this type of damage to a hyd. lifter?
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« Reply #12 on: January 08, 2008, 01:56:54 PM »
Does the scenerio I described cause this type of damage to a hyd. lifter?

Lack of oil could collapse a lifter I suppose, to be honest not sure though, but they do need oil to stay pumped up

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« Reply #13 on: January 08, 2008, 03:39:07 PM »
Lack of oil could collapse a lifter I suppose, to be honest not sure though, but they do need oil to stay pumped up
i dissagree, when they are new they are not collapsed

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« Reply #14 on: January 08, 2008, 03:42:33 PM »
i dissagree, when they are new they are not collapsed

that is correct right, thanks. What do you think Ralph? Would a lifter starving for oil make it collapse?

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« Reply #15 on: January 08, 2008, 05:05:59 PM »
that is correct right, thanks. What do you think Ralph? Would a lifter starving for oil make it collapse?
i feel that you are right in regards to starving for oil, but why is it starving ??? the only way to know is to take it apart as tom said.
Broken spring (like brad said) galled ,dirt ?? Take the snap ring off and carefully rap it on a hardwood block ,see whats insideTom

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« Reply #16 on: January 08, 2008, 05:50:40 PM »
Anyone know how lifters are adjusted on an Olds, it's got this funny aluminum pivot thing joining every 2 rocker arms together.
HotRod,
From what I was told, you torque the rockers down to factory specs and you are done  ;D
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KonaCole is correct; no adjusting valves on 455; I torqued each gradually, switching from 1 to the other, until reach 25.
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« Reply #17 on: January 09, 2008, 08:16:06 PM »
that is correct right, thanks. What do you think Ralph? Would a lifter starving for oil make it collapse?

The spring inside the lifter relies on oil to keep it cool. No oil = heat = potential to break.
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« Reply #18 on: January 09, 2008, 09:22:30 PM »
The lifter just had some gunk in it , we took it apart sprayed it with some carb cleaner and put it back togeather. Now it works fine and the spring was fine also.
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