caryb78

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???

DUB

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

tonak

cam?

caryb78

Original cam and lifters21k miles. LIFTERS looked good when heads replaced. .1 longer push rods installed. Screw in studs.

diehrd

Is the rocker stud press or screw in ? If press fit make sure it is not being pushed out of the head. How are you adjusting them ?

caryb78

Per the comp procedure that came with the rockers.

This is only happening with #1 intake and exh.

caryb78

I will check rods tomm. for bending and check studs. How do I know if lifter is pumped up or not?

caryb78

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.

DUB

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

StraubTech

Did you confirm you needed .100" pushrods or did someone tell you that you need .100" pushrods?

DucatiDon

Check that the end of the valve tip isnt beaten into a mushroom......

caryb78

Alum. heads were recommended to have .1 longer push rods, I confirmed with adjustable rod and recently confirmed again by looking at rocker marks on valve stem.

caryb78

Yeah I understood that but didn't know if I could tell by looking down bore. Thought there may be a better way. Thanks for response IM hoping it is resolved,

DUB

You should be able to see though the holes in the heads where the push rods go through and they will allow you to see the top of the lifter with a bright light.

DUB

Phil Zell

Wiped cam lobe ?

caryb78

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??

ajrothm

You need to pull the intake and inspect the cam/lifters.. My guess is it wiped out a couple lifters...Unfortunately, all that metal is everywhere in the engine now. Just went through this on my dads 396...