brand new lifters collapse over night?
#1
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Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
brand new lifters collapse over night?
melling soaked n oil for a week. put them in car .sat overnight .went out this morning to put rest of motor back together. and 9 out of 16 were collapsed!? wtf?
#2
Member
Re: brand new lifters collapse over night?
Soaking in oil wont fill the cavity under the lifter internal piston - it has to be pumped in. What do mean collapsed? How did u test this? U mean u cant move the cup down or its bottomed out? Only on some and not others? '91 formula means roller lifters so u can check them buy hand upside down pushing down on them onto a p-rod and that into a block of wood. Well new lifters the spring that keeps the cup up is pretty stout and can be tough to compress w/o oil inside. My used 125k mi roller lifters with oil still in them wont compress at all by hand.
Sounds more like u cant identify zero lash and have collapsed the cup all the way while adj the preload.
Sounds more like u cant identify zero lash and have collapsed the cup all the way while adj the preload.
#3
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Car: 86 Camaro
Engine: 355- hopefully a 5.3 this summer
Transmission: 700r4
Axle/Gears: 3.42
Re: brand new lifters collapse over night?
they collapse when there isn't any oil pressure and they are holding a valve open, which is what about half of them will be doing at any given time..
#4
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Car: 91 formula
Engine: 350 tpi
Transmission: auto
Axle/Gears: poss
Re: brand new lifters collapse over night?
I had them at zero lash. they were fine when I put them in motor then when I went out to put rest of motor back together 9 of them let go because the rocker arms just slopped around.
#5
Member
Re: brand new lifters collapse over night?
That makes even less sense than your first post. Im out'a here!
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