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post #1 of 15 (permalink) Old 11-04-2012, 08:49 AM Thread Starter
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Engine Fragments

A friend has a 105 engine that sprouted these fragments after losing oil press ure. Symptoms were shortly after start up when the pickup must have sucked these pieces up to the screen and partially blocked it. Seems the material in the picture is copper-ish orange rather than bronze-yellow. He has dismanteled the motor and found some scoring on the rod bearings with a progressively worsening from 1 to 4.

The oil pump was inspected internally, the front sprocket bushings are accounted for as are the oiler washers, small end rod bushings seem ok, .. seems like every none aluminum alloy components has been accounted for.

Any ideas ? Could it be valve guide shrapnel? Oil filter pieces ? This is a real teaser and head scratcher. There is a lot of debris here...in the picture.
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post #2 of 15 (permalink) Old 11-04-2012, 09:49 AM
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Chain tensioner bushing?

Jesper Rasmussen
1991 75 Twinspark, 1993 164 3.0 24V Super daily driver, 1973 GTV2000 neverending project
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post #3 of 15 (permalink) Old 11-04-2012, 10:49 AM
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You sure he didn't spin a bearing?

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post #4 of 15 (permalink) Old 11-04-2012, 12:27 PM Thread Starter
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Osso, can we move this to "Engine Rebuilding"? I screwed up....agin. Uncle
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post #5 of 15 (permalink) Old 11-04-2012, 01:06 PM
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It's copper, not bronze I believe, as bronze is more golden while copper is more reddish unless the camera is playing tricks. Most bushing material is bronze in these engines, I can't think of any copper except in the bearing and thrust bearings shells.
As he needs a complete disassembly anyway to get all the debris out of the galleries we will soon know!
That is a mess.


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post #6 of 15 (permalink) Old 11-04-2012, 01:11 PM Thread Starter
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Chain tensioner bushing?
Thanks for that thought.. we will investigate and report back.
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post #7 of 15 (permalink) Old 11-04-2012, 01:30 PM
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Osso, can we move this to "Engine Rebuilding"? I screwed up....agin. Uncle
Don't do it again!

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post #8 of 15 (permalink) Old 11-04-2012, 01:46 PM Thread Starter
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Don't do it again!
No smiley.. you should say... okeydokey... for the same effect.. Mille danke
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post #9 of 15 (permalink) Old 11-04-2012, 02:03 PM Thread Starter
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Found it. This should answer it.. Bear with our uninitiated basis of what these bearin's are made of. http://www.kingbearings.com/files/En..._Materials.pdf
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post #10 of 15 (permalink) Old 11-04-2012, 02:24 PM
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I think you got it.


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post #11 of 15 (permalink) Old 11-04-2012, 03:29 PM Thread Starter
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I think you got it.
Seems like some master engine builder decided to use the peened oil plugs in the crank shaft which leaked under pressure test. Master builder has lost all the plaques on his wall.
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post #12 of 15 (permalink) Old 11-04-2012, 03:59 PM
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Agghhh! Obviously NOT a BB reader Uncle!


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post #13 of 15 (permalink) Old 11-05-2012, 03:07 AM
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Quote:
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No smiley.. you should say... okeydokey... for the same effect.. Mille danke
Okie dokie! Hope all goes well with the rebuild.

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post #14 of 15 (permalink) Old 11-05-2012, 05:21 AM Thread Starter
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That's the spirit! I'm Uncle and I approve this message. ......one more day folks... then 49% of us can start answering the phone again before we jump off a cliff. Hold your nose and vote if you haven't already in July, or if you have, vote again.
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post #15 of 15 (permalink) Old 11-05-2012, 08:49 AM
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In Chicago (cook county) We just vote and vote and vote. We get free phones! And a BIG party tomorrow night! I'm so excited!
(Lemme outta HERE!!!)


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