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Help- how fast should carbon build up,and why do I have ugly internals!?
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hrm, something isnt tuned properly and you arent fully burning your fuel.
or...
you havent opened it up at all (as in gas pedal to floor) to blow out those deposits.
or...
you are in fact burning some oil.
valve cover shouldnt be an issue.
Al
----- Original Message -----
From: Robbie Cotner
To: scirocco-l@scirocco.org
Sent: Thursday, September 19, 2002 1:13 AM
Subject: Help- how fast should carbon build up, and why do I have ugly internals!?
Hey all, please help! I just pulled the head from my '84 8v so I can drill out a broken exhaust stud. I completely rebuilt the motor(at 170k) about 4 months ago, it now has just over 6,000 miles. Anyway, when I rebuilt it I meticulously got rid of every carbon deposit, the pistons were perfectly clean(even kinda polished), as well as the cylinder head bowl, and the valves. Now after 6k I expected to see a little black, but EVERYTHING has a rather thick, crusty black coating. The valves actually don't look too bad, but everything else is coated in black, after only 6k!! I'm not burning oil am I!? I replaced the rings during the rebuild ofcourse(they were from JCwhitney though, so not sure of quality). I had an avg of 155 psi in all cylinders about 10 miles after the rebuild, haven't checked it since. I have NEVER seen smoke come out the exhaust pipe, neither have any of my friends. My valve cover has been leaking quite a bit since the rebuild
-Rob
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<DIV><FONT face=Arial size=2>hrm, something isnt tuned properly and you arent
fully burning your fuel.</FONT></DIV>
<DIV><FONT face=Arial size=2>or...</FONT></DIV>
<DIV><FONT face=Arial size=2>you havent opened it up at all (as in gas pedal to
floor) to blow out those deposits.</FONT></DIV>
<DIV><FONT face=Arial size=2>or...</FONT></DIV>
<DIV><FONT face=Arial size=2>you are in fact burning some oil.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>valve cover shouldnt be an issue.</FONT></DIV>
<DIV><FONT face=Arial size=2>Al</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=robw_z@yahoo.com href="mailto:robw_z@yahoo.com";>Robbie Cotner</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=scirocco-l@scirocco.org
href="mailto:scirocco-l@scirocco.org";>scirocco-l@scirocco.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, September 19, 2002 1:13
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Help- how fast should carbon
build up, and why do I have ugly internals!?</DIV>
<DIV><BR></DIV>
<P>Hey all, please help! I just pulled the head from my '84 8v so I can
drill out a broken exhaust stud. I completely rebuilt the motor(at 170k)
about 4 months ago, it now has just over 6,000 miles. Anyway, when I
rebuilt it I meticulously got rid of every carbon deposit, the pistons were
perfectly clean(even kinda polished), as well as the cylinder head bowl, and
the valves. Now after 6k I expected to see a little black, but
EVERYTHING has a rather thick, crusty black coating. The valves actually
don't look too bad, but everything else is coated in black, after only
6k!! I'm not burning oil am I!? I replaced the rings during the
rebuild ofcourse(they were from JCwhitney though, so not sure of
quality). I had an avg of 155 psi in all cylinders about 10 miles after
the rebuild, haven't checked it since. I have NEVER seen smoke come out
the exhaust pipe, neither have any of my friends. My valve cover has
been leaking quite a bit since the rebuild
<P>-Rob</P>
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