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Update: My 2.0 16v Engine Saga
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bearing rotates within rod instead of crank rotating within bearing.
Al
----- Original Message -----=20
From: Robbie Cotner=20
To: Benjamin Harder=20
Cc: scirocco-l@scirocco.org=20
Sent: Wednesday, April 02, 2003 1:30 AM
Subject: Re: Update: My 2.0 16v Engine Saga
Sorry man! Seems like you're taking it pretty well though. Anyway, =
stupid question... I've rebuilt two engines and have been into cars for =
years now, but I still don't exactly know what a spun rod bearing is?=20
-Rob=20
Benjamin Harder <vwtype53@yahoo.com> wrote:=20
Well, things have gone from bad to worse for my first engine =
rebuild...
During the engine break-in driving session I began to notice a =
knocking sound
that was occuring above 3k rpm. The sound progressively got worse as =
I
drove. Once the car was home, I dropped the oil pan and turned the =
crank
over by hand only to discover the worst possible problem...
The #3 rod bearing had spun. And what makes this story even more =
interesting
is that this is the same rod bearing that had spun on this engine =
when I
bought the engine from the junkyard... the machine shop resized the =
rod
and the crank was re-ground. All bearing clearances were PlastiGage =
checked
and the engine was assembled... only for that same rod bearing to =
spin again!
My BIG suspicion at this point is that the machine shop did not =
properly
resize the rod. They may have not resized the locating gr! oove for =
the bearing,
which may have put the bearing clearance out of tolerance at that
point on the bearing... just not at the point where I checked it...
The sad realization here is that the engine that I spent all Winter =
building
is now dead... but not for long of corse...
Today Josh Conner and myself located a parts 2.0 block which had a =
decent
crank and rods in place. My plan is to use this new crank and rods =
and install
them into my "good" block. I also plan to use my "good" pistons =
which have
new rings that are still breaking in...=20
I will use the main bearing caps from my good block, and again check =
all
my clearances. Just this time I will have a factory crank and rods =
that
have never spun or been touched by a shop... which will hopefully =
give
me a running engine again soon.
Tonight I already have removed the engine from my mk1... by =
myself... which
isn't all that fun. Now comes the complete dissasembly of the bl! =
ock
one more time to install the new crank and rods.
The onl y issue that I may face would be possible wrist pin =
clearance
mating my good pistons to these used rods... besides obvious play, =
should
I be concerned doing this?
With new parts on the way, I am hopeful to have the engine together =
again
by the weekend... and possibly install it one more time into my car =
by
next week.
Of all possible engine problems, this has to be the extreme worst. =
When
a crank is ruined, the engine simply must come out of the car...
what a day!
Well, I suppose I'd better get some more work done before I call it =
a
night tonight... I mean, it's only 1am now... hehe
Hope everyone else has had a better weekend and week so far!
But no worries... my hopes are high that I will be on the road again =
soon!
=3D=3D=3D=3D=3D
Benjamin Harder
86 Scirocco 16v
80 Scirocco 16v (2.0 is being rebuilt *again*)
93 Passat GLX
http://www.geocities.com/vwtype53/
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<DIV><FONT face=3DArial size=3D2>bearing rotates within rod instead of =
crank=20
rotating within bearing.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Al</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Drobw_z@yahoo.com href=3D"mailto:robw_z@yahoo.com";>Robbie =
Cotner</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dvwtype53@yahoo.com=20
href=3D"mailto:vwtype53@yahoo.com";>Benjamin Harder</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Cc:</B> <A =
title=3Dscirocco-l@scirocco.org=20
href=3D"mailto:scirocco-l@scirocco.org";>scirocco-l@scirocco.org</A> =
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, April 02, 2003 =
1:30=20
AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: Update: My 2.0 16v =
Engine=20
Saga</DIV>
<DIV><BR></DIV>
<P>Sorry man! Seems like you're taking it pretty well =
though. =20
Anyway, stupid question... I've rebuilt two engines and have =
been into=20
cars for years now, but I still don't exactly know what a spun rod =
bearing is?=20
<P>-Rob=20
<P> <B><I>Benjamin Harder <<A=20
href=3D"mailto:vwtype53@yahoo.com";>vwtype53@yahoo.com</A>></I></B> =
wrote:=20
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px =
solid">Well,=20
things have gone from bad to worse for my first engine=20
rebuild...<BR><BR>During the engine break-in driving session I began =
to=20
notice a knocking sound<BR>that was occuring above 3k rpm. The sound =
progressively got worse as I<BR>drove. Once the car was home, I =
dropped the=20
oil pan and turned the crank<BR>over by hand only to discover the =
worst=20
possible problem...<BR>The #3 rod bearing had spun. And what makes =
this=20
story even more interesting<BR>is that this is the same rod bearing =
that had=20
spun on this engine when I<BR>bought the engine from the junkyard... =
the=20
machine shop resized the rod<BR>and the crank was re-ground. All =
bearing=20
clearances were PlastiGage checked<BR>and the engine was =
assembled... only=20
for that same rod bearing to spin again!<BR><BR>My BIG suspicion at =
this=20
point is that the machine shop did not properly<BR>resize the rod. =
They may=20
have not resized the locating gr! oove for the bearing,<BR>which may =
have=20
put the bearing clearance out of tolerance at that<BR>point on the=20
bearing... just not at the point where I checked it...<BR><BR>The =
sad=20
realization here is that the engine that I spent all Winter =
building<BR>is=20
now dead... but not for long of corse...<BR><BR>Today Josh Conner =
and myself=20
located a parts 2.0 block which had a decent<BR>crank and rods in =
place. My=20
plan is to use this new crank and rods and install<BR>them into my =
"good"=20
block. I also plan to use my "good" pistons which have<BR>new rings =
that are=20
still breaking in... <BR>I will use the main bearing caps from my =
good=20
block, and again check all<BR>my clearances. Just this time I will =
have a=20
factory crank and rods that<BR>have never spun or been touched by a =
shop...=20
which will hopefully give<BR>me a running engine again =
soon.<BR><BR>Tonight=20
I already have removed the engine from my mk1... by myself... =
which<BR>isn't=20
all that fun. Now comes the complete dissasembly of the bl! =
ock<BR>one more=20
time to install the new crank and rods.<BR><BR>The onl y issue that =
I may=20
face would be possible wrist pin clearance<BR>mating my good pistons =
to=20
these used rods... besides obvious play, should<BR>I be concerned =
doing=20
this?<BR><BR>With new parts on the way, I am hopeful to have the =
engine=20
together again<BR>by the weekend... and possibly install it one more =
time=20
into my car by<BR>next week.<BR><BR>Of all possible engine problems, =
this=20
has to be the extreme worst. When<BR>a crank is ruined, the engine =
simply=20
must come out of the car...<BR>what a day!<BR><BR>Well, I suppose =
I'd better=20
get some more work done before I call it a<BR>night tonight... I =
mean, it's=20
only 1am now... hehe<BR><BR>Hope everyone else has had a better =
weekend and=20
week so far!<BR><BR>But no worries... my hopes are high that I will =
be on=20
the road again soon!<BR><BR><BR>=3D=3D=3D=3D=3D<BR>Benjamin =
Harder<BR>86 Scirocco=20
16v<BR>80 Scirocco 16v (2.0 is being rebuilt *again*)<BR>93 Passat=20
=
GLX<BR><BR>http://www.geocities.com/vwtype53/<BR><BR>____________________=
_________________!=20
_____________<BR>Do you Yahoo!?<BR>Yahoo! Tax Center - File online,=20
calculators, forms, and=20
=
more<BR>http://tax.yahoo.com<BR><BR>_____________________________________=
__________<BR>Scirocco-l=20
mailing=20
=
list<BR>Scirocco-l@scirocco.org<BR>http://neubayern.net/mailman/listinfo/=
scirocco-l</BLOCKQUOTE>
<P><BR>
<HR SIZE=3D1>
Do you Yahoo!?<BR><A=20
=
href=3D"http://us.rd.yahoo.com/finance/mailsig/*http://tax.yahoo.com";>Yah=
oo! Tax=20
Center</A> - File online, calculators, forms, and=20
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