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Location:
Ipswich
Registered:
May 2002
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Where did this bit of metal come from?
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Wed, 03 August 2005 12:46
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Dropped the oil out of my 4AGE a few days ago, and I found a piece of metal in the bottom of the pan when I emptied it. It is possible that it came from my gearbox (replaced before this), but I don't remember seeing it there before I dropped the oil from the engine, and looking at my disassembled gearboxes, I can't see where it would likely come from. So I'm guessing it's from the engine...
It doesn't respond to a magnet. It looks like part of the block? Any ideas where it could likely have come from?
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Location:
tallahassee FL usOFa
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 13:43
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any guess on what's the diameter of the hole from just the section of it?
i'm guessing it's a trans piece from around the shift rails, or maybe the reverse idler shaft.
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I supported Toymods
Location:
Perth, WA
Registered:
May 2003
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 15:20
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dont see how that could get into the engine from the gbox
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Location:
Ipswich
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 22:21
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allencr: I'll measure the hole tonight. Could be near the oil pickup maybe? Hmm, this is going to be interesting trying to find... If it is from the engine, I hope I can see it by dropping the sump off...
ae95: No, what I meant was, I dropped the oil out of the gearbox before I replaced the gearbox, then emptied the gearbox oil out of the pan, and then dropped the oil from the engine. So it *could* have come out of the gearbox (with the gearbox oil), but I don't remember seeing it in the pan before I dropped the engine oil...
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Location:
Ipswich
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 22:25
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Either way, I'm guessing that this is a bad thing, and I should start looking for a new engine?
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Location:
Ipswich
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 22:30
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Could it have come from the head? Would something that big be able to end up in the sump? It looks like a different material to the head (which looks to be a lighter coloured alloy)?
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Location:
Ipswich
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 22:45
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allencr: What is a shift rail, and where is the reverse idler shaft? I'm looking through the 4AGE book at the moment, and I can't seem to locate them...
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Banned by his request
Location:
moved to tamworth
Registered:
July 2002
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 22:56
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unless it was fired out of the gearbox and smashed through the engine block,it isnt a gearbox peice. best bet is to take the sump of and have a look.if you cant see anything have a look int the rocker covers.
mick
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Location:
Ipswich
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 23:00
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Theory #632.2: It was something that was just sitting in the engine bay (picked up off the road or something) and it fell into the pan while I was mucking around with the oil filter...
Will drop sump and take rocker covers off over the weekend and have a look around...
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Location:
Ipswich
Registered:
May 2002
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Location:
Brisbane
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 23:22
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If that came out of the engine/gearbox I'm pretty sure you'd know about it by now. Catastrophic metallurgical failures are generally easy to spot.
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Location:
Ipswich
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 23:27
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Norbie: So you recon maybe Theory #632.2 could be a possibility? I'll drop the sump off anyway and see if I can spot anything, I think.
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Location:
Sydney NSW
Registered:
July 2004
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 23:29
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If it doesnt respond to a magnet, then it must be an alloy. Alloy parts include Head, Waterpump, Bellhousing, Inlet manifold, timing cover backing plates?? and maybe a few more exterior bits. Not sure if the oil pickup/pump is alloy, i've never been "inside" a 4AGE.
So i would have a look around these bits first, as you said it may have dropped into the oil pan from outside the engine.
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Registered:
June 2003
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 23:37
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Maybe part of one of the baffles from the cam/rocker covers?
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Location:
Land of Oz
Registered:
June 2004
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 23:51
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Hi,
How does something that size get from the head to the block? Wouldn't the oil galleries be too small at allow it through, and wouldn't the oil pump or filter block it?
If it's in the sump, and assuming it's from the engine, then I'd suspect it to came from the block not the head.
seeyuzz
river
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Location:
Ipswich
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Wed, 03 August 2005 23:54
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river: That's what I was wondering too (about whether the oil galleries in a 4AGE are big enough to let something that big go from the head to the sump). Oil pump and filter wouldn't block it though, looking at 4AGE book the oil gets pumped and filtered as it gets picked up from the sump, so anything falling off etc wouldn't get in there unless it got sucked up by the pickup again (which wouldn't happen in this case because it's too big).
4AGE block is iron right? Iron responds to magnet, so can't be part of the block. Bizzaro.
Approach #58: Drive car till something blows up, then I'll know where it came from. If it doesn't blow up then assume part was either not important, or didn't come from engine.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: Where did this bit of metal come from?
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Thu, 04 August 2005 01:04
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note, not all iron based alloys are magnetic 
yar, if you cbf pulling off sump and rocker, just drive... something will happen eventually
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Location:
Armidale
Registered:
January 2003
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Location:
Ipswich
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Thu, 04 August 2005 06:19
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babyz: That's a really good point. If it's too big to fit through the sump plug hole, then it definately didn't come from in there. I'll have to look tonight 
At the moment I'm liking the "just drive it" approach. And just hope that if there is something broken in there, when it goes it doesn't take everything else with it.
I'll think about it more.
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Location:
Newcastle
Registered:
July 2003
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Re: Where did this bit of metal come from?
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Thu, 04 August 2005 06:34
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id be pretty comfortable in saying it didnt come out of either your engine sump or gearbox with the oil.
it looks more like a piece of bellhousing/gearbox casing. look for broken tabs that are designed to bolt though or the likes. if something like that was missing from your engine head (im assumiing not block as it dosent look like cast iron) then you would be having serious issues.
perhaps part of the oil cooler assembly ? but my guess is gearbox/bell housing casing
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Location:
Armidale
Registered:
January 2003
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Re: Where did this bit of metal come from?
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Thu, 04 August 2005 06:38
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Of course the gearbox drain plug is usually bigger ...
It doesn't really look like an internal engine or gearbox bit, but on the other hand it looks a little mangled up, which tends to happen to bits that spend any time loose where they shouldn't be.
Hard to know what to advise, really. Big help, huh?!?! 
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Location:
Ipswich
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Thu, 04 August 2005 06:41
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LOL, well, it's a lot better than me standing around scratching my head
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Location:
Arthurs Creek, Victoria
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Thu, 04 August 2005 07:35
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I've had spare bits left over before now, things like that and wondering where the fuck they came from, and I just proceeded to put the engine back in and together and everything was fine. I'd just leave it.
If it is important soon enough you'll either notice it or something else will fail.
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Location:
Colac, Victoria
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Thu, 04 August 2005 09:05
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nods- if the motor goes BANG you'll know it was an important bit ....
if it was me id be pulling stuff off where i could to check what i can
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Location:
Darwin, Australia
Registered:
March 2005
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Re: Where did this bit of metal come from?
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Fri, 05 August 2005 09:03
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This might sound werid, are you SURE its not a bit of reinforced plastic? check the understand on the oil filler cap, I had a bit break off that on my rx7 once. it looked exactly like that.
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Location:
Ipswich
Registered:
May 2002
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Re: Where did this bit of metal come from?
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Fri, 05 August 2005 11:22
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No, quite sure it's metal. Someone else suggested that it might be the underside of a piston, near the grugeon pin? Hmm, don't know.
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Location:
brisbane
Registered:
October 2004
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Re: Where did this bit of metal come from?
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Sun, 07 August 2005 01:30
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well the broken sides probably wont help too much, but that curved impression on it, draw some circles and see how big that section is, like what size circle it was, that might help you guess what it is.
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