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  #1  
Old 02-05-2010, 03:58 PM
NukeGM NukeGM is offline
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Lifter / Cam replacement

Got a bad lifter tick on the pass side of my 360. Is it ok to change just the lifter or will that be a bad idea because of the the cam wearing on the new lifter? I have heard that if you change just a lifter you could spin a bearing from the cam wearing onto the new lifter.

So yea or naa? I really don't have the cash right now to do a cam & lifters so if its possible to get by with just the bad lifter that would be great.
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  #2  
Old 02-05-2010, 03:59 PM
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fulsizjeep fulsizjeep is offline
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Are you sure the tick is not a valve?

If it is a lifter, it is better to replace all lifters as a set.
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  #3  
Old 02-05-2010, 04:04 PM
NukeGM NukeGM is offline
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Quote:
Originally Posted by fulsizjeep
Are you sure the tick is not a valve?

If it is a lifter, it is better to replace all lifters as a set.

Fairly sure its a lifter, pulling the valve cover tonight, what should I look for if its a valve? Is it something that would be obvious?
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  #4  
Old 02-05-2010, 04:15 PM
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srobertsfsj srobertsfsj is offline
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Quote:
Originally Posted by NukeGM
Fairly sure its a lifter, pulling the valve cover tonight, what should I look for if its a valve? Is it something that would be obvious?

Look for a loose or sloppy rocker.
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  #5  
Old 02-05-2010, 04:58 PM
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tgreese tgreese is offline
 
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Aren't broken rocker arm bridges fairly common on AMC V8s?

New lifter on an old cam is ok. Never use a used lifter on a new cam, or mix up used lifters from their positions on a used cam.

I guess a new set would be better, but I don't understand the logic of it, except that if one lifter is worn out, the others are likely close behind.

If you were really short on money, you could try taking the lifter apart and cleaning it in carb cleaner, and putting it back. Improving your oil pressure might help too.
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  #6  
Old 02-05-2010, 05:23 PM
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i love a flat cam in the morning
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  #7  
Old 02-05-2010, 06:23 PM
RUBBERSIDEDOWN RUBBERSIDEDOWN is offline
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if you decide you need stock cam. i have a brand new cam and lifter set that i would give you a great deal on.
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  #8  
Old 02-05-2010, 08:03 PM
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crazydog crazydog is offline
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I had a tick after my engine sat for a few months without being run. I tried some Seafoam through the carb and in the oil. It fixed the tick. It is cheap and it might keep you from having to tear it apart.
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  #9  
Old 02-05-2010, 08:38 PM
NukeGM NukeGM is offline
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Quote:
Originally Posted by crazydog
I had a tick after my engine sat for a few months without being run. I tried some Seafoam through the carb and in the oil. It fixed the tick. It is cheap and it might keep you from having to tear it apart.

Tried the seafoam already it didn't stop it. Going pull the valve cover now.
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  #10  
Old 02-06-2010, 11:38 AM
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billyj7175 billyj7175 is offline
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Quote:
Originally Posted by gsmikie
i love a flat cam in the morning

Isn't that "I love the smell of a flat cam in the morning"?...haha
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  #11  
Old 02-15-2010, 11:20 AM
NukeGM NukeGM is offline
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After looking at it I had a bent rocker bridge, ordering 2 new rocker arms w/bridge & saddles. Will see if that takes care of it or if a lifter is still ticking. I am thinking it still is going to need a lifter but my fingers are crossed.
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  #12  
Old 02-15-2010, 08:44 PM
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Millerluck Millerluck is offline
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Just make sure the lifter is not pumped up with oil or it might bend again.

It should be slightly springy when you push down on the push rod by hand. With about a 1/16 movment.

If it feels like a rock it is pumped up. Only way I know to fix that is to remove the lifter and tare it down and drain it.

Or maybe time will drain it if you tighen the rocker and turn the engine over by hand untill that valve opens some and wait a few days??

All I know it that when that valve is all the way closed with the rockers on, you should be able to spin the push rod with your fingers.

Larry
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  #13  
Old 01-12-2022, 07:25 PM
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homerj40 homerj40 is offline
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Removing Lifter w/heads on?

I have a similar tick. Bought an 87 GW that had sat for 10 years - flushed everything (a few times), tried MMO, trans fluid, etc.. Ticking has gone way down but now I get occasional exhaust side popping on acceleration. Oil pressure is great so I don't think the cam is gone. IF it's not a bent or broken rocker bridge can you pull the lifters with one of those probe tools? I heard that on some motors you HAVE TO pull the heads.
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  #14  
Old 01-13-2022, 09:52 AM
MysticRob MysticRob is offline
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Quote:
Originally Posted by homerj40
I have a similar tick. Bought an 87 GW that had sat for 10 years - flushed everything (a few times), tried MMO, trans fluid, etc.. Ticking has gone way down but now I get occasional exhaust side popping on acceleration. Oil pressure is great so I don't think the cam is gone. IF it's not a bent or broken rocker bridge can you pull the lifters with one of those probe tools? I heard that on some motors you HAVE TO pull the heads.

You replied to a 12yr old thread, but pop the valve cover on the suspected side, check for looseness of valvetrain, verify torque specs on the loose one, take intake off to get to bad lifter and use a magnet or your fingers to get it out.
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  #15  
Old 01-13-2022, 12:38 PM
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homerj40 homerj40 is offline
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Thanks Rob! That helps to know the order to check. Cheers
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  #16  
Old 01-13-2022, 01:16 PM
MysticRob MysticRob is offline
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Quote:
Originally Posted by homerj40
Thanks Rob! That helps to know the order to check. Cheers

I'd recommend starting a new thread when something is so old, otherwise everyone has to slog thru all the old posts to get to yours.

My resto thread (see my sig) has some pics somewhere of exactly what I found on mine (bad lifter), sounds like yours could be similar. I did it the cheap and easy way, but cam may still be bad, and if so I'm sure it'll eventually let me know, but for now it runs pretty good.
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  #17  
Old 02-08-2022, 12:27 PM
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rang-a-stang rang-a-stang is offline
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MysticRob nailed it. Concur with all he said.

If you do have to replace a lifter, you DO have to pull the intake manifold but not the heads. I just replaced on this weekend. If you do replace a lifter(s), you should do a break in (20 mins at 2000RPM).
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  #18  
Old 02-10-2022, 11:36 PM
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letank letank is offline
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last time I replaced a bad lifter, I did all of them... and never bothered to do a break in... the engine is still running after 100kmiles.
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  #19  
Old 02-16-2022, 08:09 AM
rocklaurence rocklaurence is offline
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Regarding Hyd' roller lifters, Im getting mixed information on whether the Dodge lifters work, other OEM lifters fit or if you have to use the $500 set for an AMC. Any information? It hurts me to think that I can get Dodge/Ford/Chevy rollers for <$200 but AMC sets are $480
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  #20  
Old 02-23-2022, 09:31 PM
jeepman42 jeepman42 is offline
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Not sure about roller lifters, but reg hydraulic lifters less than $5 ea. from several sources for jeep.
I don't know if rollers have that much advantage??
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