3vze lifter question
#1
3vze lifter question
I have my junkyard 3vze on the engine stand. On the head side there were are 6 lifters that are not decompressing when right side up. However, when I turn the engine upside down, they all fall (decompress) and hit the cam like they should. Turn the eninge back over (right side up) and they fall. Is this normal for hydraulic lifters that have been sitting a while (I don't know how long) Makes it damn hard to get a compression reading on the cylinders!
Last edited by vasinvictor; 12-21-2011 at 11:03 AM.
#2
I don't think they are hydraulic. I think they are solid. I could be wrong. There should be a gap and it makes since that they would "fall" to the cam when upside down.
Again, I could be wrong...
Again, I could be wrong...
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#8
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The valve lifter is a bucket for the shim (the shim is what you see in the photos), and it just sits on top of the valve stem. The valve stem (powered by the valve spring) pushes the lifter up against the cam (actually, just short of it).
You can see a drawing here http://www.ncttora.com/fsm/1990-1995...e/cylinder.pdf (page EG2-62)
So, yes, you have at least 6 stuck valves. You say you got this engine from a junkyard? I wonder how it ended up there ....
You can see a drawing here http://www.ncttora.com/fsm/1990-1995...e/cylinder.pdf (page EG2-62)
So, yes, you have at least 6 stuck valves. You say you got this engine from a junkyard? I wonder how it ended up there ....
#11
Registered User
But, they're still hydraulic, right?
Last edited by thook; 12-21-2011 at 07:17 PM.
#14
FYI, the more technically correct term would be cam follower.
Just so there is no confusion.
Nope, they sure ain't.
Maybe you're thinking of the competitor, the Pissan VG30i/VG30E 3.0L V6. I know for sure it has hydraulic lifters. Had to work on my sister's boyfriend's 95 Pathloser a few times...
Last edited by MudHippy; 12-22-2011 at 07:21 AM.
#15
I've said it before, but I wish I had your collection of illustrations on hand and easily findable! I've not seen the bottom one before. Taking the motor back to the junkyard from where it came. Valves stems are rusted bad, cylinder walls are scored, headgaskets were put on opposite side and block a coolant port, sediment and mud everywhere in coolant passages that motor. Junkyard=1, Drew=0
Last edited by vasinvictor; 12-22-2011 at 07:09 AM.
#18
Registered User
@Mudhippy.........I was joking about the whole hydraulic thing. I know they're not hydraulic.
Note, CougyPoo did make the distinction "traditional" in his original post.
Note, CougyPoo did make the distinction "traditional" in his original post.
Last edited by thook; 12-22-2011 at 09:05 AM.
#19
Apparently Toyota is calling them bucket tappets now.
So we've got valve lifters, cam followers, or bucket tappets. Whichever you choose to call them, they're still the same thing.
Just so there is no confusion.