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Old 04-15-2004, 09:54 PM
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replace hydraulic roller lifters?

Do you have to replace hydraulic roller lifters when you change the cam shaft? I've been told that it's not a nesesity, but don't want to risk a meltdown, nor do I want to spend money uneededly.

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Old 04-15-2004, 10:34 PM
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No, that is just another beauty of roller setups. Just inspect the lifters and maybe rebuild them, or at least make sure they all work properly and none of the rollers are worn.
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Old 04-15-2004, 11:23 PM
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How do you "rebuild" a lifter? I've never seen rebuild kits for them.
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Old 04-15-2004, 11:23 PM
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Old 04-15-2004, 11:52 PM
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Quote:
Originally posted by Jmark
How do you "rebuild" a lifter? I've never seen rebuild kits for them.


You take the clip out of the top, take the guts out, clean out the crap that settles in there sometimes, replace the springs if they have gotten lazy and saggy, and put the things back together

Is that a better explanation? haha.

As for the rollers, just make sure the bearings seem good, not too much sideways motion or anything.

Happy?

Oh yeah, also check their size to make sure they arent too worn, same goes for the lifter bores.

Do you want some pictures on a "How-to" as well? lol.
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Old 04-16-2004, 12:16 AM
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Quote:
Do you want some pictures on a "How-to" as well? lol.
i do i do
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Old 04-16-2004, 07:07 AM
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Where do you get the springs for the lifters?
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Old 04-16-2004, 08:34 AM
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Okay, just cause I LOVE being an ***...

A "how-to" on rebuilding roller lifters.

First pictures, the old tired lifter that does'nt even go down anymore with the check valve ball held down.


Next pictures:
Remove the c-clip by depressing the top of the plundger, then pry the top out along with the oil restrictor.
Test the check ball valve for up and down movement.


Next pictures:
Remove the plundger if the ball works, or if you can free it up. Otherwise if the ball is stuck and cant be freed toss the thing.
Once you have the lifter apart including the plunder and the spring, dip them in some kerosine or something to clean them up.


Next pictures:
Remove the lifter and parts from liquid, clean them up, and prime the inside with a "Little bit" of oil (too much and it is impossible to get the plunder down).
Re-install the spring and plundger, then prime the plundger a bit. The plunder should stay in one place, then when you depress the ball it should sink a bit.
re-install the restrictor and the top then use a vise if you have too(for those of us with-out three arms) and depress the top and plundger while you re-install the clip. Wa-La! Done. THe plundger should go up and down with ease.



I'm going to bed now

EDIT: Oh yeah.. as far as the roller goes, use some compressed air to blow out the bearings, tapping the lifter a few times helps. Then lube up the rollers bearings on the side with a bit of oil.

Last edited by 87442lover; 04-16-2004 at 12:46 PM.
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Old 04-16-2004, 10:33 AM
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...........That's not rebuilding...........that's cleaning and inspecting.

I don't think that was one'o them there high dollar lifters you were showing in your demonstration. Last I remember, in every stock application roller lifter I've seen, there were never any bearings in the rollers.
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Old 04-16-2004, 10:55 AM
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i dont like when they get lazy and saggy either.
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Old 04-16-2004, 12:47 PM
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Ya'll come back now ya hear!?
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Old 04-16-2004, 02:56 PM
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The stock chevy lifter i'm holding in my hand has needle bearings in the rollers.

I'm still waiting to find out where I can get those replacment springs.
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Old 04-16-2004, 03:14 PM
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Quote:
Originally posted by machine shop tom
The stock chevy lifter i'm holding in my hand has needle bearings in the rollers.
Well that's not what I remember seeing anyway.....

I guess I'll start paying a little more attention to such things now that I know how to "rebuild" 'em......
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Old 04-16-2004, 08:10 PM
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Maybe I can get some teeny little valve spring shims to help plunger springs.
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Old 04-16-2004, 08:22 PM
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You go to the parts store and get a flat tappet hyd. lifter. The proceed to rob the spring from it.

Larry
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