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Old 06-28-2011, 08:08 PM
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Reuse roller lifters or not

Hi, i am aware that good condition roller lifters can be reused but am unsure about mine. The roller itself (dont know what its called) rolls very freely, no scratches and is in good shape. Although, when i pushed the pushrod very hard (by hand) into the top of the lifter to compress the lifters internal spring, it only moves down very very slightly and kinda sounds like a click. Im assuming it should go down slightly further or am i not applying enough pressure. Also, the clip at the top that holds the internals of the lifter in is somewhat falling out and bent on a few lifters, assuming that the above problem is actually not a problem can i just bend these clips back into place? Just wondering if i need to spend the $150 on a new set or if these are reusable. Thanks again guys!

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Last edited by 1986c10; 06-28-2011 at 08:19 PM.
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Old 06-28-2011, 08:20 PM
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After a couple night soak in oil, the internals seemed to free up a little more so i think that the internals are probably okay. So if the clips at the top are bent in, can i rebend them into place without any problems?
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Old 06-29-2011, 08:36 AM
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Being careful with the clips, I wouldn't worry about reusing them. The clips only hold things together for assembly as the lifters are preloaded and will work without the clips in the real world with no over-revving. The problem to avoid is a clip coming out and causing problems inside the engine as a loose part.
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Old 06-29-2011, 09:36 AM
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if i took the clip out, wouldnt that allow the spring inside the lifter to have more travel? And the clip doesnt actually hold the internals in?
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Old 06-29-2011, 11:48 AM
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NEVER take the clips out! I was hoping I wouldn't be misunderstood, but sometimes I suck at explaining... The clip does hold it together. "Theoritically", once the rocker arm is installed and preloads the lifter, the plunger is held below the ring and should never contact it again. "Theoritically", you can put one bullet in a revolver and it not go off pointed at your head. Both cases are valid but I don't condone either one! With all that said, do your best to form the clips back into shape or even borrow some from another unused lifter, but don't worry too much about it being a problem. I'd be wondering why they were bent? That alone might be pointing to a problem none of us are aware of.
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Old 06-29-2011, 12:13 PM
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If it were me, I would spend the $150 and be done with it. The piece of mind of having new and the thought of the damage that could be done, is worth it.
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Old 06-29-2011, 01:09 PM
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As you both mentioned it could be more of a problem as i kind of suspected so i probably will be just getting new ones. But one other question, with just my cam in, it would rotate freely. I put the front 4 lifters in with dogbones and held the dogbones down and rotate the cam. As i rotated it, the cam would walk forward as it lifted one lifter and make a click as it did it, the lifter it did it on was a little bit tight in the bore... Any thoughts on that?
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Old 06-29-2011, 09:07 PM
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Cam walk isn't abnormal, particularly with a roller, you need a button. I'm surprised you didn't have one on the old setup, was the inside of the timing cover worn in front of the cam, where the gear would have made contact?
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Old 06-29-2011, 09:49 PM
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well the guy that i got the block/valve train components said this block just uses a cam retaining plate on the front which i have and i installed it. The cam still has probably a quarter inch of play with that plate installed... i figured its' supposed take up most of the play and maybe leave about an eighth inch at the most just so it doesnt rub. Mine is not that way. Then i saw this kit and was wondering why their was two retaining plates

http://www.jegs.com/i/GM%20Performan...0002/-1?CT=999

Is this just a general kit in which retaining plate is for a 87-95 tbi block and the other plate for a vortec??? Or am i missing a plate? Thanks for the info 68novass

One other question, assuming i have my retaining plate on correctly. What controls the depth as to how far the cam goes into the block? Is it possible that it was set up too deep and as the pressure of the lifter rolls on the lobe when the valve is opening, it slides the cam forward and then back into its back position in the block when the valve is closing? cause that is somewhat how it feels.
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Old 06-29-2011, 11:05 PM
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The cam won't walk backwards, the distributor gear pushes it forward. You need a cam stop button, similar to this, the retainer plate doesn't limit travel. The come in different lengths and probably in an adjustable length. You might need a rub plate on the inside of the timing cover, depending on what style button you use. I don't recall the clearance requirement, it's not much.

Cam walk causes erratic timing as well.
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Old 06-30-2011, 09:15 AM
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Okay, just a few questions about that. The guy i got it from said it didnt use a cam button just the plate (probably wrong) but i believed him. Does the cam button push against the timing cover? if so, my timing cover has some sludge on it and their is no signs of anything coming into contact with the inside of it so i feel like it wasnt ran with a cam button. Which leads me to ask, is their some that use the cam button and some that just use a plate? I went ahead and ordered the cam button regardless though because you are more than likely correct as to my cam walking problem. Thanks again
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Old 06-30-2011, 04:21 PM
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OEM Roller Blocks with the bolt on Retainer Plate don't use a Cam button when using OEM type Roller Cams.
Normal Cam buttons wont fit the OEM Roller Cam Timing Gear as the hole is smaller.

That 1/4" of freeplay is probably because the Distributor isn't installed and the Cam is sliding back into the rear Cam plug on the rear of the block.

Last edited by SSedan64; 06-30-2011 at 04:29 PM.
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Old 06-30-2011, 04:37 PM
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With the retainer plate and cam gear installed,you should only have around .005 endplay...give or take a couple.
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Old 06-30-2011, 05:35 PM
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i have the cam gear chain, dogbones and spider all hooked up and if the cam is moving in and out it isnt as noticeable. I will check again later but i think it might be good
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