Lifter adjustment problems
Thread Starter
Racer
Joined: Jan 2013
Posts: 300
Likes: 10
Lifter adjustment problems
L-82, 1.6 rockers, alum. heads. just installed with maybe 10 miles on them. I keep having to readjust the lifters on #1 . They get loose but the poly loks are still tight. I readjust, they are ok for a short while then it starts again. #1 exhaust. It runs good after adjustment . I am guessing a lifter but why does it do well after adjustment and then get loose without the nuts being loose???
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
Are you sure that when you go to adjust it...the plunger in the lifer is actually coming back up to the top by the clip. Your lifter can be sticking and not coming back up. Often times called a 'collapsed lifter'. BE CAREFUL constantly adjusting this lifter because you can actually go too far and bend a push rod or worse.
Check to make sure your push rod is NOT bent.
I doubt it has to do with the stud in the head coming out...but you might want to make sure it is not backing out or pulling out...because they are usually threaded into the head.
DID you put in new lifters???...and if so....who made them?
DUB
Check to make sure your push rod is NOT bent.
I doubt it has to do with the stud in the head coming out...but you might want to make sure it is not backing out or pulling out...because they are usually threaded into the head.
DID you put in new lifters???...and if so....who made them?
DUB
Thread Starter
Racer
Joined: Jan 2013
Posts: 300
Likes: 10
Thread Starter
Racer
Joined: Jan 2013
Posts: 300
Likes: 10
Thread Starter
Racer
Joined: Jan 2013
Posts: 300
Likes: 10
lifter adjust
Rocker was loose but lock and nut were tight. Removed rocker, push rod straight, Stud tight. Some wear on push rod where it rubs on wear plate. Readjusted wear plate, adjusted rocker and buttoned it up. No noise -------yet.
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Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
You know what a lifter looks like when you pull it out of a box??? the cup in the lifter where you put the push rod is all the way up at the top of the lifter. IF you have a stuck plunger....(which is the part of the lifter where the push rod rests)....it may NOT be all the way up and you can look at it when the rod is out of it and see that it is NOT all the way up....thus...the lifter is stuck.
DUB
DUB
Last edited by DUB; Apr 30, 2015 at 07:24 PM.
Drifting
Joined: Jul 2013
Posts: 1,299
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From: Tri-Cities TN
Thread Starter
Racer
Joined: Jan 2013
Posts: 300
Likes: 10
Thread Starter
Racer
Joined: Jan 2013
Posts: 300
Likes: 10
You know what a lifter looks like when you pull it otu of a box??? the cup in the lifter where you put the push rod is all the way up at the top of the lifter. IF you have a stuck plunger....(which is the part of the lifter where the push rod rests)....it may NOT be all the way up and you can look at it when the rod is out of it and see that it is NOT all the way up....thus...the lifter is stuck.
DUB
DUB
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
DUB
Thread Starter
Racer
Joined: Jan 2013
Posts: 300
Likes: 10
I am afraid it could be. Today as I was driving it back home it started making serious lifter chatter. I pulled the covers and found loose rockers on for or cylinders. Removed the rockers and find pushrods worn severely on the wear plates. Valve stems ok, push rods not bent but worn really bad for about .5 inch all around the push rod. What should I look for??
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
I am afraid it could be. Today as I was driving it back home it started making serious lifter chatter. I pulled the covers and found loose rockers on for or cylinders. Removed the rockers and find pushrods worn severely on the wear plates. Valve stems ok, push rods not bent but worn really bad for about .5 inch all around the push rod. What should I look for??
