Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Lifter issues?

Thread Tools
 
Search this Thread
 
Old Apr 16, 2017 | 11:20 AM
  #1  
Cb2417's Avatar
Thread Starter
On The Tree
 
Joined: Feb 2017
Posts: 107
Likes: 0
Default Lifter issues?

Hi all! As I am trying to check my ptv clearance I notice that one of my new morel lifters is able to compress ever so slightly by using light thumb pressure and none of the other 15 or any of the stock ls1 lifters compress at all by hand. Is this cause for concern?
Reply
Old Apr 16, 2017 | 05:02 PM
  #2  
Cb2417's Avatar
Thread Starter
On The Tree
 
Joined: Feb 2017
Posts: 107
Likes: 0
Default

Anyone think I got a bunk lifter? One out of 32 in my possession feel different.... I wouldn't think this is normal. I know hydraulic lifters are supposed to pre load but this is the only lifter that feels "springy" by hand pressure
Reply
Old Apr 16, 2017 | 06:07 PM
  #3  
RockinWs6's Avatar
TECH Addict
 
Joined: Mar 2013
Posts: 2,628
Likes: 30
Default

Take it out and put it in some engine oil then push the plunger a few times. It should stiffen right up.
Reply
Old Apr 16, 2017 | 06:43 PM
  #4  
Cb2417's Avatar
Thread Starter
On The Tree
 
Joined: Feb 2017
Posts: 107
Likes: 0
Default

Originally Posted by RockinWs6
Take it out and put it in some engine oil then push the plunger a few times. It should stiffen right up.
this is what I figured as well... I soaked them all in oil and thought maybe I didn't soak this one enough. I put it in oil and pushed the plunger but still nothing. Maybe I'm just being paranoid but I don't like how it's the only one out of 16 that is a little springy. Can't see it being faulty or giving me issues but don't wanna learn the hard way
Reply
Old Apr 16, 2017 | 06:55 PM
  #5  
RockinWs6's Avatar
TECH Addict
 
Joined: Mar 2013
Posts: 2,628
Likes: 30
Default

Something is wrong, it should stiffen up. Contact the supplier, I'll bet there is a small piece of dirt interfering with the internal working. Smart to notice this now. Might be fine under engine oil pressure conditions but why tempt it.
Reply
Old Apr 16, 2017 | 07:03 PM
  #6  
Cb2417's Avatar
Thread Starter
On The Tree
 
Joined: Feb 2017
Posts: 107
Likes: 0
Default

Originally Posted by RockinWs6
Something is wrong, it should stiffen up. Contact the supplier, I'll bet there is a small piece of dirt interfering with the internal working. Smart to notice this now. Might be fine under engine oil pressure conditions but why tempt it.
yeah for sure. I will let it soak in oil over night but I can't see even just a little bit of compression being ok when it's the only one doing this. The problem is I ordered from TSP and I am from Canada so it's a bit of a process just for one lifter. I don't think anyone carries morels near me. Pretty frustrating to have a delay cause of one lifter
thanks for the response
Reply
Old Apr 16, 2017 | 08:21 PM
  #7  
z-maro's Avatar
12 Second Club
10 Year Member
Photogenic
Photoriffic
Liked
iTrader: (18)
 
Joined: Jun 2011
Posts: 1,287
Likes: 22
From: MN
Default

I just put in Johnson lifters and I can pre load all 16 with finger pressure. Is this abnormal?
Reply
Old Apr 16, 2017 | 08:37 PM
  #8  
RockinWs6's Avatar
TECH Addict
 
Joined: Mar 2013
Posts: 2,628
Likes: 30
Default

No not at all, it just depends how full they are. When there is air in the plunger it will move easily. When it is completely full of oil it will move very hard. But when one lifter is different than the rest in the same situation it raises question as to why.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Apr 16, 2017 | 08:39 PM
  #9  
RockinWs6's Avatar
TECH Addict
 
Joined: Mar 2013
Posts: 2,628
Likes: 30
Default

Originally Posted by Cb2417
yeah for sure. I will let it soak in oil over night but I can't see even just a little bit of compression being ok when it's the only one doing this. The problem is I ordered from TSP and I am from Canada so it's a bit of a process just for one lifter. I don't think anyone carries morels near me. Pretty frustrating to have a delay cause of one lifter
thanks for the response
You could try flushing it with solvent then try reoiling it. Doesn't take much to screw with the lifters small internal parts. You could also carefully disassemble the lifter then clean it good and retry. Its very easy to do.
Reply
Old Apr 16, 2017 | 08:40 PM
  #10  
Cb2417's Avatar
Thread Starter
On The Tree
 
Joined: Feb 2017
Posts: 107
Likes: 0
Default

Yes this is just it. I talked to a family member who has built engines for the past thirty plus years and he doesn't seem to think it's a big deal at all. I am still interested to see if soaking overnight fixes the issue
Reply
Old Apr 16, 2017 | 08:44 PM
  #11  
RockinWs6's Avatar
TECH Addict
 
Joined: Mar 2013
Posts: 2,628
Likes: 30
Default

I can tell you this, I put 100's of lifters in and I always put them in oil them compress them with a push rod while in the oil until they will not move. I never had a one that didn't pump up and stay there. Like I said it may just be a tiny bit of dirt holding the check ball open etc but noway would it go in my engine until it worked like the other 15 lifters.
Reply
Old Apr 16, 2017 | 09:30 PM
  #12  
Cb2417's Avatar
Thread Starter
On The Tree
 
Joined: Feb 2017
Posts: 107
Likes: 0
Default

Good point. I would take it apart but don't want to mess it up.
Reply
Old Apr 17, 2017 | 05:22 PM
  #13  
Cb2417's Avatar
Thread Starter
On The Tree
 
Joined: Feb 2017
Posts: 107
Likes: 0
Default

Originally Posted by RockinWs6
I can tell you this, I put 100's of lifters in and I always put them in oil them compress them with a push rod while in the oil until they will not move. I never had a one that didn't pump up and stay there. Like I said it may just be a tiny bit of dirt holding the check ball open etc but noway would it go in my engine until it worked like the other 15 lifters.
well I got home today and pressed on the plunger and it's solid like the other 15 lifters. That puts my mind at ease s bit more
Reply
Old Apr 17, 2017 | 05:36 PM
  #14  
RockinWs6's Avatar
TECH Addict
 
Joined: Mar 2013
Posts: 2,628
Likes: 30
Default

Good to go....let err rip!
Reply




All times are GMT -5. The time now is 07:00 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE