Re: Bad rod bearing?

["Dan Brideau \(Home\)" <dan@hobbyetc.com>]

Before you go too far, flip the belts off the atlenator and the water
pump... These can make more noise than you would think.


Dan Brideau
http://www.hobbyetc.com/scirocco/



----- Original Message -----
From: "Jonas Karlsson" <jonas85k@hotmail.com>
To: <scirocco-l@scirocco.org>
Sent: Tuesday, May 09, 2000 1:32 PM
Subject: Bad rod bearing?


> Ok, so here's the story.
>
> I'm cruising back from LA up to the Bay Area last weekend and
decided to
> make good time. So I wind-tunnel behind various large pick-ups and
SUV's in
> the 90-95 mph range. I do this for about 45 minutes. It is a hot day
and oil
> temps get up to about 120 C. Water temp is 3/4 to the top. I keep a
close
> eye on oil pressure and it never got below 45psi.
>
> I stop for dinner and gas, and as I pull in, I notice a slight noise
from
> the motor. VERY background, didn't think much of it.
>
> Drive the rest of the 150 miles back and when I get home there is a
BAD
> noise. Directly RPM dependent, like heavy metal things knocking
around.
>
> I have since only driven the car once, and that was to pick up my
"Team
> Scirocco" hat from Randy Block (Bad Ass BTW). He suggested that it
could be
> a bad rod bearing, as that is similar to (but not as loud) as the
noise when
> he spun a bearing.
>
> I checked the valve lash, and they are all nice and tight. I also
pulled the
> oil pan to check for any metal debris in the oil, I found none. From
what I
> could tell, the cylinder walls looked fine (but it was hard to tell,
with
> the crank and rods in the way)
>
> So, does anyone have some advice on how to fix it. Plastigauge? Rod
bearings
> are cheap ($25 a set) Is that for 1 rod or 4 rods? If I replace them
should
> I break in the motor as if new, or what. Should I do all 4 or just
the one
> that is bad? Can I do this with the motor in the car?
>
> I want this fixed before ND, so that leaves me less than 2 weeks.
>
>
> TIA
>
> Jonas
> 85 Scirocco 2.0
> For direct reply: jonas@metabolex.com
> http://www.geocities.com/scirocco2l8v
>
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