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Piece of metal found on oil drain plug
2 Attachment(s)
Found this piece of metal (assume its steel) stuck to oil drain plug magnet. Drained the oil just after engine started making a continuous metallic knocking. Idles fine, noise definitely gets worse with rpm increase.
Can anyone ID what this might be a piece of? I'm thinking either distributor or cam gear. I will probably pull distributor and oil pan off tomorrow to have a look see. Dart 351w block, MSD Pro Billet 8578 dizzy, Trick Flow stage 3 cam, Edelbrock Victor jr heads, not sure about rockers. Mark |
Is that piece straight or curved?
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Generally, if there is a chunk, it is a good idea to disassemble the engine and findout what 'other' things have been effected by it rattling around. Also see if there are 'other' parts ready to fail, failing or have failed.
Too thin and long to be distributor gear. Just my opinion. Tru |
I have been looking at that piece for 5 mins and I can't place it's origin. Not from distributor, not from oil pump, not from timing chain or cam gear.
Wondering if it could have cam from a piece of cast webbing inside the block? I think a disassembly is in your very near future.....the sooner the cheaper? |
Quote:
David |
it has a machined surface on part of it......could be nothing...but could be everything.
i'd pull the pan first and look around. could be the bottom off one of the bores, kinda thin there, its stroked could be from clearancing for the crank. in any event it can't be just ignored.. |
I can't see how curved it is, looks like piston where the rings would sit explaining your knocking noise or the top of a lifter. Hard to say your there...
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dogbone
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chickenbone......:JEKYLHYDE
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"...continuous metallic knocking." That can't be good and can only get worse. I'd pull the pan, as you suggested. If you do not get to the source of the problem, don't give up. Pull the valve covers and start methodically removing valve train gear to inspect the lifters, springs, everything.
The piece is a real mystery. Do you have roller lifters? It might be one of the retainers that (otherwise) keep the lifters from rotating within the lifter bore. This kind of thing has happened to the best of us. Good luck! |
Is it Aluminum or Ferrous metal?
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stuck to the magnetic drain plug means its iron
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Brain Fart on my part.
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Any way to post the picture bigger or more of them without your fingers?
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dogbone--holds the lifters down/in, in the valley, under the spider.
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Mark;
I have the same block as you do and I built it up myself. If I found that chunk in my oil pan I would un-build it before I tried to run it again. The piece doesn't look familiar but if it's knocking it can't be good. Bill |
distributor Pan valve-covers intake in that order
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I agree with Vector. Remove your intake.
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Looks mighty like a piece of dog bone(roller lifter link), if thats the case it would explain the noise your hearing, roller lifters are quite likely to be doing a bit of a dance & chewing bits off the cam lobes, inlet manifold first to decide on how much further you need to go...
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And the winner is.....Vector1....
Tore engine down today...it was a dogbone that had one of the ends broken off, which of course caused the roller lifter to rotate enough to stop rolling and flat spot...arrrr...which means new cam, roller lifter and retainer "dogbone"! Got to love engine builders who modify things that shouldn't be modified...note...do NOT machine down dogbones to fit them into the space around the roller lifter on a Dart 351w block, or at least make sure you don't take it so far as to weaken the tempered metal or so thin your grandma could break it with her rocker!!! I replaced the original pic with a pic of the 'culprit'... |
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