[Cloud9...68]

I googled this question, a saw about a 50/50 split on both sides, with maybe a slight majority toward assembly lube. Thoughts? Thanks.

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[KRAG50]

When I did my head refurb, I pumped up the lifters, by hand with Motor oil, then coated the outside with assembly lube when putting them in the pockets. Cams were well coated with assembly lube when installing.

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[Darth Vadar]

Krag50... Yes, definitely the way to go... I like Royal Purple, but GM Assembly lube is actually really good stuff too!

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[KRAG50]

I can't remember what brand I used, but it is usually very sticky, red in color, I think, always be generous.

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[Cloud9...68]

KRAG,



Thanks for the response, but what do you mean by "pumped up the lifters, by hand with motor oil"? The lifters only have a tiny hole on their sides.

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[KRAG50]

I used a hand pump oil can that I sharpened the tip, inserted into the small hole and pumped it full of oil, Red-line is what I used. I took the lifters apart to clean them, then I wanted them full of oil before later starting the car. If you pull them apart, only do one at a time, don't mix the parts, also replace them in the same locations.They get a bit varnished up after time, mine are quieter now although will make a slight tick after setting for a couple of weeks. They quiet down after oil pressure comes up.

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[Cloud9...68]

Thanks; I'll take a closer look, because it wasn't obvious to me how they came apart. I tried twisting the two halves in opposite directions, but they don't seem to want to budge.



Would you mind posting a picture of the hand pump oil can you used? I'm not quite picturing what you mean.



Or better yet, can I rent a U-haul, pack my engine and the remaining boxes of stuff I still need to put onto it, and drive up to your place, as you seem to have all the tools needed to do this job right <img src="/forum/images/smilies/968/biggrin.png" class="smilie" alt="" />

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[KRAG50]

Here are a couple of pictures of the oit can, remember this "pump up" is performed with the lifter out of the head.

Also a picture of the cam saddle.

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[Cloud9...68]

Thanks, and thanks for the pictures of the cam saddles. Sure wish I knew how to weld...



I haven't seen one of those oil pumps in years. Where did you get yours? And how did you sharpen the tip?



One last question - how do you take apart the lifters?

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[KRAG50]

I would think any automotive store, most are plastic now, but I think the pump and tip are still metal. I sharpened it on a bench grinder.

I think they just pulled apart, I most likely use some compressed air into the little hole, first squeeze them to force oil out of the hole, they should come right apart, put each one in a baggy, to contain the parts together.

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[Cloud9...68]

Hmmm... I've been tugging and twisting with everything I have, and they're not budging. Probably means it's all the more important to get them apart to clean them, but no luck so far... Been a very, very bad day...

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[Cloud9...68]

Well, I tried heating up a lifter with a heat gun, and I still can't get it to budge. The fact that they're smooth makes it very hard to get a good grip on them, and of course I can't use any kind of tool for fear of scratching them. I don't even want to use pliers protected by a towel.



So, other than GRAG50, has anybody ever taken their lifters apart to clean them? I'd very much like to do it, and the fact that I'm having so much trouble getting them apart tells me that there may be some gum or varnish in there, and consequently, I really should clean them up if at all possible. Next, I'll try soaking one in some solvent.

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[vliegwielolaf1234]

[quote name='Cloud9...68' timestamp='1330354270' post='122479']

Well, I tried heating up a lifter with a heat gun, and I still can't get it to budge. The fact that they're smooth makes it very hard to get a good grip on them, and of course I can't use any kind of tool for fear of scratching them. I don't even want to use pliers protected by a towel.



So, other than GRAG50, has anybody ever taken their lifters apart to clean them? I'd very much like to do it, and the fact that I'm having so much trouble getting them apart tells me that there may be some gum or varnish in there, and consequently, I really should clean them up if at all possible. Next, I'll try soaking one in some solvent.

[/quote]

I had them out a few weeks ago (replacing chain and pads), and flushed them with some ATF oil and let them soak for a night , took the atf oil out and put normal oil in , and had hope it would cure the lifter noise , but i still have some noise but only at warm/hot startup .(oil pressure is instant also hot )

As far as i know there is no way to take the lifter itself appart whitout destroying it , and the only way to make sure they are al working correct is replacing all off them , this was the comment of 2 independant specialists here in the netherlands .

Since i only have the lifter noise on warm start up for say 3 to 4 seconds i left it like that , when i need a valve job i think i will replace them , or try to find the bad one but i could not pinpoint the noisy lifter . so i decided to change lifter position an see if the noise moved , but did not made the effort jet to find out .

I used simmilair method as KRAG50 described , but also used a small magnet (one off those to recover fallen bits an pieces) to pump the oil/air in and out , you stick the magnet to the center and move it up en down . speaks for itself when you have the lifters out .

I used a syringe i had laying around to fill inkt cartridges



If there is a way to check or take appart the lifters i would be intrested of course ?????? it's a $$$$$$ to replace them .



Then oil or assembly lube really i don't think it will make a big difference , assembly lube sticks a bit longer to the metal parts so it will protect a bit longer , might be handy during first startup when it takes a bit longer for the oil to reach all vital places , but make sure you crank it till you have pressure on your gauge before starting the engine .

And use plenty of oil or lube .

Used both on engine rebuilts (before only oil now only assembly lube) , never had a problem .

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[Cloud9...68]

I got mine apart. I've never even seen a hydraulic lifter up close before, so I was tugging on the wrong part. The piston is a snug fit, but it comes apart without too much trouble. I don't see any risk of destroying them; should be a simple matter to clean them up, fill them with oil, and then put assembly lube around them.

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[vliegwielolaf1234]

[quote name='Cloud9...68' timestamp='1330366489' post='122490']

I got mine apart. I've never even seen a hydraulic lifter up close before, so I was tugging on the wrong part. The piston is a snug fit, but it comes apart without too much trouble. I don't see any risk of destroying them; should be a simple matter to clean them up, fill them with oil, and then put assembly lube around them.

[/quote]





Picture ?? i am really intrested to see what came apart ?

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[MB968]

Anyone ever use a bypass filter system to clean up the engine incl to fix the issue with sticking lifters? We had great luck cleaning up the servo valves (similar tight fitting cylinder in a bore problem as a dirty lifter) on our industrial robuts.

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[vliegwielolaf1234]

[quote name='Cloud9...68' timestamp='1330366489' post='122490']I got mine apart. I've never even seen a hydraulic lifter up close before, so I was tugging on the wrong part. The piston is a snug fit, but it comes apart without too much trouble. I don't see any risk of destroying them; should be a simple matter to clean them up, fill them with oil, and then put assembly lube around them.[/quote]



picture please very intrested to see !!!!

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[Cloud9...68]

Will do asap. Been extremely busy. I snapped some pictures, just haven't had time to upload them yet. Will try to do it tonight when I get home.

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[Cloud9...68]

OK, here are some pictures of a lifter. The top one is the bottom view of a fully assembled lifter, the middle one is with the piston removed, and the bottom one is with the lifter disassembled, showing all the parts:



   



   



   



I pulled the piston out with a pair of pliers, holding the top of the lifter tightly while I twisted the piston while I pulled. Then I took the piston apart, drained any oil from all the parts, wiped them down, filled the main part of the lifter with spray solvent, sloshed it around, let is sit a minute, drained it, then wiped it out again. Then I hit it with a heat gun to evaporate any remaining solvent, filled up the lifter with fresh oil, then re-assembled it, taking care to put it together the same way it came apart. Very easy, actually. Then I'll coat the outsides of the lifters with assembly lube before putting them back in the head.

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[vliegwielolaf1234]

Thanks .

Did you find anything wrong with them ?

Bad lifter , did you have any before taking it apart , and can you indntify them this way ?

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