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Removed head, pistons looking bad

Old 10-27-2008, 06:17 PM
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Removed head, pistons looking bad

Well due to a failing head gasket my 4runner was leaking coolant out the side of the block, anywho tore down the motor with the help of my girl friend and this is what it looked like










and corrosion where the coolant was leaking...

Old 10-27-2008, 06:20 PM
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aww... c'mon. thought you'd have pics of the girlfriend turning wrenches and stuff.

just kidding....

anyhow.... that's just wierd. you can still see the crosshatch pattern in #3 (last pic).

don't worry. I'll be rebuilding an engine right beside you.
Old 10-27-2008, 06:24 PM
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Can't really tell, but it looks like carbon build up to me. Not something to worry about if it is that. Just pour some solvent (I heard brake fluid works well) on there and let it sit. Should remove it.

None of my girlfriends ever knew what a socket wrench was.

Last edited by Matt16; 10-27-2008 at 06:27 PM.
Old 10-27-2008, 06:28 PM
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Originally Posted by Matt16
Can't really tell, but it looks like carbon build up to me. Not something to worry about if it is that. Just pour some solvent (I heard brake fluid works well) on there and let it sit. Should remove it.
wonder where the build up came from?
look at the intake runners (looks like #2 and #3) in the pic below.
brake fluid might clean up the carbon problem on the pistons (not likely, but okay), but not the oil in the intake.
Originally Posted by t0mwat3r

Last edited by abecedarian; 10-27-2008 at 06:29 PM.
Old 10-27-2008, 06:39 PM
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Originally Posted by abecedarian
wonder where the build up came from?
look at the intake runners (looks like #2 and #3) in the pic below.
brake fluid might clean up the carbon problem on the pistons (not likely, but okay), but not the oil in the intake.
i dont know what it is but its even in the upper intake and throttle body, any ideas?
Old 10-27-2008, 06:39 PM
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looking at that, I bet you'd find worse looking crap on the inside of the upper intake manifold, and on the back of the butterfly valve on the throttle body...

go ahead, take a look, I bet you'll find the good ol nice black goo crap; I can tell it's hit you too form the one pics and being able to see inside the lower intake manifold a little bit


EDIT, ha, I was right... you post too quick man...

https://www.yotatech.com/forums/f116...thread-142091/

Last edited by iamsuperbleeder; 10-27-2008 at 06:41 PM.
Old 10-27-2008, 06:42 PM
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plain and simple, it's caused by the PCV system.
Old 10-27-2008, 06:45 PM
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Originally Posted by abecedarian
plain and simple, it's caused by the PCV system.
darned PVC
Old 10-27-2008, 06:58 PM
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You could add a little collector, that way there wouldn't be so much gunk in the intake:

Old 10-27-2008, 07:00 PM
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how about a pic of that on a 22re?
Old 10-27-2008, 07:01 PM
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Originally Posted by iamsuperbleeder
darned PVC
darned dyslexic keyboards.
Old 10-27-2008, 07:02 PM
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I've been wanting to add one of those, but I'd just assume change the PCV valve every other oil change rather then empty out collected oil every couple of weeks
Old 10-27-2008, 07:03 PM
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Originally Posted by abecedarian
darned dyslexic keyboards.
i Kno, it tis agrrivatingg, is not it...
Old 10-27-2008, 07:04 PM
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the proper ones drain the oil back into the valve cover.
Old 10-27-2008, 07:05 PM
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Originally Posted by abecedarian
the proper ones drain the oil back into the valve cover.
I've never seen a proper one then... hmmm...
Old 10-27-2008, 07:12 PM
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cause they don't exist.
Old 10-27-2008, 07:13 PM
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Originally Posted by abecedarian
cause they don't exist.
well now that would explain why I've never seen one
Old 10-27-2008, 07:13 PM
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if they were serious about it, they'd use centrifugal force to cause the oil to collect on the outer side of the chamber, then drain the collected oil down into the crankcase, not the valve cover.

a simple separator like in the pic above wouldn't do anything to the aerosolized oil

Last edited by abecedarian; 10-27-2008 at 07:16 PM.
Old 10-27-2008, 07:15 PM
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Originally Posted by abecedarian
if they were serious about it, they'd use centrifugal force to cause the oil to collect on the outer side of the chamber, then drain the collected oil down into the crankcase, not the valve cover.
kinda like those pre-filters you can put atop snokels?
Old 10-27-2008, 07:22 PM
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I think the intent is to re-burn the oil to it acts like some of that top-end conditioner that "Lucas Oil" sells.. kind of seals the valves and rings a tad if you're running it hard enough to blow out through the PCV system.

Either way I dont like it either.

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