Stephan,
You did the right thing tearing down that baby! It's going to feel so much
better after a hot bath.
Don't know what happened, but my guess is a chemical reaction from
overheating that broke down the oil molecules, combined with a mix of
incompatible fluids. I've seen a similar copper color from mixing degreaser
with oil. I think moisture gets to the metal and causes the copper color.
After tearing down my engine and seeing the internals, I got fanatical
about changing oil and keeping it clean.
Fred
----------
> From: Stephan Sochoux <sochoux@yahoo.com>
> To: datsun-roadsters@autox.team.net
> Subject: Wanted: diagnostic
> Date: Sunday, February 13, 2000 2:47 PM
>
> Howdy all,
>
> Just finished taking apart my U20 and found the
> following:
>
> - Rod4 bearings were fried. Color is copper,
> presumably due to overheating and oil starvation ?
> http://sites.netscape.net/soluxio/friedbearings.jpg
>
> - All main bearing cap bolts on the side of the oil
> galley were full of sludge. It was like pulling the
> bolts out of a swamp. Odor was also very strong and
> bad. Color was black to greyish. All bolts on the
> other side were all dry !
> http://sites.netscape.net/soluxio/maincapbolt.jpg
>
> Also, the entire bottom end has a dark copper color to
> it, even the chains.
>
> Given all this, any idea what went wrong ?
>
> Thanks,
>
> Stephan
> '69 2000
> Do You Yahoo!?
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