C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Stuck Lifter

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Old 11-20-2007, 07:52 PM
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jsup
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Default Stuck Lifter

One of my lifters seems to be stuck. The seat where the pushrod sits will not compress the internal springs.

Any recommendations? Replacement I guess.

Thanks
Old 11-20-2007, 08:53 PM
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AGENT 86
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Are you looking into the valley to observe the lifter plunger ??
Old 11-20-2007, 08:55 PM
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jsup
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Originally Posted by AGENT 86
Are you looking into the valley to observe the lifter plunger ??
Yes, then I took it out and tried to depress the plunger on the bench with an old push rod. Nothing.

I then took out the mated lifter, and it compresses with a little pressure.
Old 11-20-2007, 08:57 PM
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AGENT 86
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Pull the snap ring and take the lifter apart. Maybe an easy fix ??
Old 11-21-2007, 09:26 AM
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jsup
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Getting a new one from NAPA today. I'll take it apart out of curiosity....
Old 11-21-2007, 10:14 AM
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Personally, I would get a whole new set and replace them all.

If one stuck, it may not be long before you're replacing them all.

One by one.
Old 11-21-2007, 02:11 PM
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Interesting - I could not compress any of my lifters yesterday - I tried them one by one by putting a pushrod in the seat (lifters in their normal positions) and pressing as hard as I can - zero movement. Does anybody know the specifications of the internal lifter spring?

FYI the engine has not been run for about 10 weeks, so I assume the lifters are bled down...
Old 11-21-2007, 02:33 PM
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Corvette Chris
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Originally Posted by Keystring
Personally, I would get a whole new set and replace them all.

If one stuck, it may not be long before you're replacing them all.
It is a 17 year-old car.
Old 11-21-2007, 02:52 PM
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Originally Posted by Keystring
Personally, I would get a whole new set and replace them all.

If one stuck, it may not be long before you're replacing them all.

One by one.
The car only has 30K miles and the inside of the motor is spotless.

Now, to the real reason......

The wife is giving me a ration of shet because of the money I am spending on the car.

This started off as a Super Ram upgrade with $1000 I had "laying around" that she didn't know about. Now, it's heads, exhaust, cam....

Any little bit I don't spend today, I can do later. Lifter's are not that big a deal.
Old 11-21-2007, 02:56 PM
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FYI: You can buy a complete set of LS7 lifters for ~$100.
Old 11-21-2007, 02:59 PM
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Originally Posted by STL94LT1
FYI: You can buy a complete set of LS7 lifters for ~$100.
Got a link? Will they work? Are they any good? Anything I looked at were $400 a set.

Even at $15 each that's $240.
Old 11-21-2007, 03:04 PM
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SDPC is a supporting vender, and offering free shipping.

http://forums.corvetteforum.com/show....php?t=1869757
Old 11-21-2007, 05:04 PM
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^^Thanks for the plug!

If we can help with anything, let us know! We'll be here Friday and Monday during this sale to assist you!
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Old 11-21-2007, 05:53 PM
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So the #88958689 caddie, ltx, lsx roller lifter will work in an '89 L98 also? Or would the lifter kit #12371042 be a better selection, considering they are so close in price? Which one would work better w/a cam w/.539"/.558" lift? Thanks,

Rich K

Last edited by thirdtimevetteowner; 11-21-2007 at 06:01 PM.
Old 11-21-2007, 06:23 PM
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Originally Posted by djxib
Interesting - I could not compress any of my lifters yesterday - I tried them one by one by putting a pushrod in the seat (lifters in their normal positions) and pressing as hard as I can - zero movement. Does anybody know the specifications of the internal lifter spring?

FYI the engine has not been run for about 10 weeks, so I assume the lifters are bled down...
I tested a couple today - the movement inside the lifter is visible when I added half a turn of preload. Didnt mean to hijack the thread - thought it may be useful in future to add this info.
Old 11-21-2007, 08:30 PM
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Originally Posted by Matt @ SDPC
^^Thanks for the plug!

If we can help with anything, let us know! We'll be here Friday and Monday during this sale to assist you!
If you have a set of roller lifters for $100 that are of decent quality (factory or better) and fit a 1990 L98 I'll take them.

Let me know.
Old 11-21-2007, 08:31 PM
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Originally Posted by djxib
I tested a couple today - the movement inside the lifter is visible when I added half a turn of preload. Didnt mean to hijack the thread - thought it may be useful in future to add this info.
I had two in my hand on the bench.

one would compress, not much but it did compress, with just a little pressure.

The other would not compress no matter how hard I pressed.

Perhaps it's a solid lifter?

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Old 11-21-2007, 11:09 PM
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I suppose I'll have to wait 'til Monday to hear from Matt @ SDPC.
Old 11-22-2007, 10:58 AM
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Originally Posted by jsup
I had two in my hand on the bench.

one would compress, not much but it did compress, with just a little pressure.

The other would not compress no matter how hard I pressed.

Perhaps it's a solid lifter?
Are you sure it isn't still full of oil? If lifters are full I don't think you can push them in by hand. Try standing them up and soaking them overnight in a jar of oil, then see how they act in the morning.
Old 11-22-2007, 11:11 AM
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Originally Posted by dan0617
Are you sure it isn't still full of oil? If lifters are full I don't think you can push them in by hand. Try standing them up and soaking them overnight in a jar of oil, then see how they act in the morning.
That practice is specifically NOT recommended by every engine parts manufacturer I have ever seen address the subject.

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