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Hydraulic Roller Lifter Question

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Old Aug 13, 2008 | 11:04 AM
  #1  
graebz28's Avatar
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From: Kansas City, MO
Car: 83 Z28
Engine: 406
Transmission: T56
Axle/Gears: 9" with 4.10s
Hydraulic Roller Lifter Question

A few of the lifter did not move freely. Most I was able to remove the retaining clip, pushrod cup and the circular thin metal plate (piston?), clean and reassemble and they were fine.

The last one of coarse, will not compress down enough to get the retaining clip back in. What to do?

How loose should the plunger feel? I know that several posts recommend using a pushrod to prime the lifters, but here is what crane says about installing theirs :

Prior to installation, immerse lifters in oil, but do not attempt to pump up hydraulic lifters. This
hinders the adjustment of proper preload settings. Proper lifter pump up will occur during the initial
start up, after approximately 40 seconds. Complete lifter bleeding may take up to fifteen minutes.


The lifters that came out of my 305 all could not be pushed down.
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Old Aug 16, 2008 | 10:18 AM
  #2  
DM91RS's Avatar
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Joined: Jul 2000
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From: Ga
Car: 91 RS
Engine: 305
Transmission: T5
Axle/Gears: 3.73
Re: Hydraulic Roller Lifter Question

The lifter that will not assemble correctly are you sure that no grit is still in there. Did you keep the lifter parts together with the same lifters? I'm not sure if it matters.


As far a the oil I did as they said and just covered them with oil overnight. Once again I'm not sure if it matters but I've never had any post valve train problems or adjustments. {except for some K-motion springs...stay away}


HTH..
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Old Aug 25, 2008 | 02:30 PM
  #3  
graebz28's Avatar
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From: Kansas City, MO
Car: 83 Z28
Engine: 406
Transmission: T56
Axle/Gears: 9" with 4.10s
Re: Hydraulic Roller Lifter Question

Thanks DM.

It turned out that the lifter was fully primed with oil. Therefore, I went ahead and rebuilt all 16 of them. One does not take too long, but anything times 16 tends to be a lot.

Turns out that there was also so moly lube inside the lifters. I soaked them in gas, cleaned and dried using compressed air, lightly coated them with oil on assembly, then soaked in oil for 8 hours and installed them. All of them move freely now. I'll post some pics later.
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Old Aug 25, 2008 | 02:47 PM
  #4  
DM91RS's Avatar
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Joined: Jul 2000
Posts: 1,854
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From: Ga
Car: 91 RS
Engine: 305
Transmission: T5
Axle/Gears: 3.73
Re: Hydraulic Roller Lifter Question

Cool......

That moly crap tends to clog up things once it "settles down"

DM
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