Pulled the rest of the Main Bearings (2-6)
03-03-2004, 10:58 PM
#11
Guest
Posts: n/a
Re: Pulled the rest of the Main Bearings (2-6)
I don't know guys, I'd bet that crank is bent. Look at the brg second from
the top in his pic. Significantly worn on one edge, a classic sign of a
bent crank, or a bent rod if it appears on a rod brg. Uneven wear in the
top brg , both outside edges worn more than the centre support the theory of
poor crank grind. The more I see of the inside of this thing the less
inclined I am to suggest you'll get a worthwhile amount of miles out of a
re-ring and new brgs. Check the local market out for boat anchors, because
that's what you may have here. Just my opinion.
Steve
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
the top in his pic. Significantly worn on one edge, a classic sign of a
bent crank, or a bent rod if it appears on a rod brg. Uneven wear in the
top brg , both outside edges worn more than the centre support the theory of
poor crank grind. The more I see of the inside of this thing the less
inclined I am to suggest you'll get a worthwhile amount of miles out of a
re-ring and new brgs. Check the local market out for boat anchors, because
that's what you may have here. Just my opinion.
Steve
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
03-03-2004, 10:58 PM
#12
Guest
Posts: n/a
Re: Pulled the rest of the Main Bearings (2-6)
I don't know guys, I'd bet that crank is bent. Look at the brg second from
the top in his pic. Significantly worn on one edge, a classic sign of a
bent crank, or a bent rod if it appears on a rod brg. Uneven wear in the
top brg , both outside edges worn more than the centre support the theory of
poor crank grind. The more I see of the inside of this thing the less
inclined I am to suggest you'll get a worthwhile amount of miles out of a
re-ring and new brgs. Check the local market out for boat anchors, because
that's what you may have here. Just my opinion.
Steve
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
the top in his pic. Significantly worn on one edge, a classic sign of a
bent crank, or a bent rod if it appears on a rod brg. Uneven wear in the
top brg , both outside edges worn more than the centre support the theory of
poor crank grind. The more I see of the inside of this thing the less
inclined I am to suggest you'll get a worthwhile amount of miles out of a
re-ring and new brgs. Check the local market out for boat anchors, because
that's what you may have here. Just my opinion.
Steve
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
03-03-2004, 10:58 PM
#13
Guest
Posts: n/a
Re: Pulled the rest of the Main Bearings (2-6)
I don't know guys, I'd bet that crank is bent. Look at the brg second from
the top in his pic. Significantly worn on one edge, a classic sign of a
bent crank, or a bent rod if it appears on a rod brg. Uneven wear in the
top brg , both outside edges worn more than the centre support the theory of
poor crank grind. The more I see of the inside of this thing the less
inclined I am to suggest you'll get a worthwhile amount of miles out of a
re-ring and new brgs. Check the local market out for boat anchors, because
that's what you may have here. Just my opinion.
Steve
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
the top in his pic. Significantly worn on one edge, a classic sign of a
bent crank, or a bent rod if it appears on a rod brg. Uneven wear in the
top brg , both outside edges worn more than the centre support the theory of
poor crank grind. The more I see of the inside of this thing the less
inclined I am to suggest you'll get a worthwhile amount of miles out of a
re-ring and new brgs. Check the local market out for boat anchors, because
that's what you may have here. Just my opinion.
Steve
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
03-04-2004, 01:37 AM
#14
Guest
Posts: n/a
Re: Pulled the rest of the Main Bearings (2-6)
On Thu, 4 Mar 2004 01:22:21 UTC "William Oliveri" <wuji@bigvalley.net>
wrote:
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
To me, it just looks like that puppy has seen a bunch of miles. Wear
at the bottom center of the insert (as opposed to the sides) is normal
as the clearance increases, wear one one edge or the other is common
as the rod side clearance increases with wear. It's fairly common to
see the thrust bearing in better shape as it usually gets a little
more lube to account for the thrust surfaces having to be oiled by the
same feed as the journal surface (more oil flow). You need a full
rebuild, but I don't see anything that would be a real issue unless
the crank needs grinding below tolerance. I think you've got one well
used engine and you need to spec it out to see what needs machine work
(which will dictate, in large part, what parts need to be replaced).
If you don't need new pistons (clearances good, etc) then it's
probably worth looking into having the crank ground (if it needs it),
throwing in new inserts and rings and pressing on. You'll have to
determine by hard numbers just what shape it is really in and go from
there.
Side comment: the pictures you have posted have been pretty darned
good. Nice job on those.
--
Will Honea <whonea@codenet.net>
wrote:
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
To me, it just looks like that puppy has seen a bunch of miles. Wear
at the bottom center of the insert (as opposed to the sides) is normal
as the clearance increases, wear one one edge or the other is common
as the rod side clearance increases with wear. It's fairly common to
see the thrust bearing in better shape as it usually gets a little
more lube to account for the thrust surfaces having to be oiled by the
same feed as the journal surface (more oil flow). You need a full
rebuild, but I don't see anything that would be a real issue unless
the crank needs grinding below tolerance. I think you've got one well
used engine and you need to spec it out to see what needs machine work
(which will dictate, in large part, what parts need to be replaced).
If you don't need new pistons (clearances good, etc) then it's
probably worth looking into having the crank ground (if it needs it),
throwing in new inserts and rings and pressing on. You'll have to
determine by hard numbers just what shape it is really in and go from
there.
Side comment: the pictures you have posted have been pretty darned
good. Nice job on those.
--
Will Honea <whonea@codenet.net>
03-04-2004, 01:37 AM
#15
Guest
Posts: n/a
Re: Pulled the rest of the Main Bearings (2-6)
On Thu, 4 Mar 2004 01:22:21 UTC "William Oliveri" <wuji@bigvalley.net>
wrote:
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
To me, it just looks like that puppy has seen a bunch of miles. Wear
at the bottom center of the insert (as opposed to the sides) is normal
as the clearance increases, wear one one edge or the other is common
as the rod side clearance increases with wear. It's fairly common to
see the thrust bearing in better shape as it usually gets a little
more lube to account for the thrust surfaces having to be oiled by the
same feed as the journal surface (more oil flow). You need a full
rebuild, but I don't see anything that would be a real issue unless
the crank needs grinding below tolerance. I think you've got one well
used engine and you need to spec it out to see what needs machine work
(which will dictate, in large part, what parts need to be replaced).
If you don't need new pistons (clearances good, etc) then it's
probably worth looking into having the crank ground (if it needs it),
throwing in new inserts and rings and pressing on. You'll have to
determine by hard numbers just what shape it is really in and go from
there.
Side comment: the pictures you have posted have been pretty darned
good. Nice job on those.
--
Will Honea <whonea@codenet.net>
wrote:
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
To me, it just looks like that puppy has seen a bunch of miles. Wear
at the bottom center of the insert (as opposed to the sides) is normal
as the clearance increases, wear one one edge or the other is common
as the rod side clearance increases with wear. It's fairly common to
see the thrust bearing in better shape as it usually gets a little
more lube to account for the thrust surfaces having to be oiled by the
same feed as the journal surface (more oil flow). You need a full
rebuild, but I don't see anything that would be a real issue unless
the crank needs grinding below tolerance. I think you've got one well
used engine and you need to spec it out to see what needs machine work
(which will dictate, in large part, what parts need to be replaced).
If you don't need new pistons (clearances good, etc) then it's
probably worth looking into having the crank ground (if it needs it),
throwing in new inserts and rings and pressing on. You'll have to
determine by hard numbers just what shape it is really in and go from
there.
Side comment: the pictures you have posted have been pretty darned
good. Nice job on those.
--
Will Honea <whonea@codenet.net>
03-04-2004, 01:37 AM
#16
Guest
Posts: n/a
Re: Pulled the rest of the Main Bearings (2-6)
On Thu, 4 Mar 2004 01:22:21 UTC "William Oliveri" <wuji@bigvalley.net>
wrote:
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
To me, it just looks like that puppy has seen a bunch of miles. Wear
at the bottom center of the insert (as opposed to the sides) is normal
as the clearance increases, wear one one edge or the other is common
as the rod side clearance increases with wear. It's fairly common to
see the thrust bearing in better shape as it usually gets a little
more lube to account for the thrust surfaces having to be oiled by the
same feed as the journal surface (more oil flow). You need a full
rebuild, but I don't see anything that would be a real issue unless
the crank needs grinding below tolerance. I think you've got one well
used engine and you need to spec it out to see what needs machine work
(which will dictate, in large part, what parts need to be replaced).
If you don't need new pistons (clearances good, etc) then it's
probably worth looking into having the crank ground (if it needs it),
throwing in new inserts and rings and pressing on. You'll have to
determine by hard numbers just what shape it is really in and go from
there.
Side comment: the pictures you have posted have been pretty darned
good. Nice job on those.
--
Will Honea <whonea@codenet.net>
wrote:
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
To me, it just looks like that puppy has seen a bunch of miles. Wear
at the bottom center of the insert (as opposed to the sides) is normal
as the clearance increases, wear one one edge or the other is common
as the rod side clearance increases with wear. It's fairly common to
see the thrust bearing in better shape as it usually gets a little
more lube to account for the thrust surfaces having to be oiled by the
same feed as the journal surface (more oil flow). You need a full
rebuild, but I don't see anything that would be a real issue unless
the crank needs grinding below tolerance. I think you've got one well
used engine and you need to spec it out to see what needs machine work
(which will dictate, in large part, what parts need to be replaced).
If you don't need new pistons (clearances good, etc) then it's
probably worth looking into having the crank ground (if it needs it),
throwing in new inserts and rings and pressing on. You'll have to
determine by hard numbers just what shape it is really in and go from
there.
Side comment: the pictures you have posted have been pretty darned
good. Nice job on those.
--
Will Honea <whonea@codenet.net>
03-04-2004, 01:57 AM
#17
Guest
Posts: n/a
Re: Pulled the rest of the Main Bearings (2-6)
I went out and took another set of pics.
These are severely detailed, about 175k each but still not too bad with dial
up (what I have).
Main Bearing #2
http://members.bigvalley.net/wuji/je...earing/mb2.jpg
Main Bearing #3
http://members.bigvalley.net/wuji/je...earing/mb3.jpg
Main Bearing #4
http://members.bigvalley.net/wuji/je...earing/mb4.jpg
Main Bearing #5
http://members.bigvalley.net/wuji/je...earing/mb5.jpg
Main Bearing #6
http://members.bigvalley.net/wuji/je...earing/mb6.jpg
Don't know if added detail would sway opinion or not :-)
What confuses me about this whole thing is the condition of the cylinders
and the compression readings. If this engine was as worn as you all say
then shouldn't there be a ring ridge on the cylinders? These guys
(visually) are as straight as an arrow. Wouldn't I have much poorer
compression than I have?
Perhaps they bored the cylinder and then put the old parts in it from the
previous engine? Confusing.......
Billo
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
These are severely detailed, about 175k each but still not too bad with dial
up (what I have).
Main Bearing #2
http://members.bigvalley.net/wuji/je...earing/mb2.jpg
Main Bearing #3
http://members.bigvalley.net/wuji/je...earing/mb3.jpg
Main Bearing #4
http://members.bigvalley.net/wuji/je...earing/mb4.jpg
Main Bearing #5
http://members.bigvalley.net/wuji/je...earing/mb5.jpg
Main Bearing #6
http://members.bigvalley.net/wuji/je...earing/mb6.jpg
Don't know if added detail would sway opinion or not :-)
What confuses me about this whole thing is the condition of the cylinders
and the compression readings. If this engine was as worn as you all say
then shouldn't there be a ring ridge on the cylinders? These guys
(visually) are as straight as an arrow. Wouldn't I have much poorer
compression than I have?
Perhaps they bored the cylinder and then put the old parts in it from the
previous engine? Confusing.......
Billo
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
03-04-2004, 01:57 AM
#18
Guest
Posts: n/a
Re: Pulled the rest of the Main Bearings (2-6)
I went out and took another set of pics.
These are severely detailed, about 175k each but still not too bad with dial
up (what I have).
Main Bearing #2
http://members.bigvalley.net/wuji/je...earing/mb2.jpg
Main Bearing #3
http://members.bigvalley.net/wuji/je...earing/mb3.jpg
Main Bearing #4
http://members.bigvalley.net/wuji/je...earing/mb4.jpg
Main Bearing #5
http://members.bigvalley.net/wuji/je...earing/mb5.jpg
Main Bearing #6
http://members.bigvalley.net/wuji/je...earing/mb6.jpg
Don't know if added detail would sway opinion or not :-)
What confuses me about this whole thing is the condition of the cylinders
and the compression readings. If this engine was as worn as you all say
then shouldn't there be a ring ridge on the cylinders? These guys
(visually) are as straight as an arrow. Wouldn't I have much poorer
compression than I have?
Perhaps they bored the cylinder and then put the old parts in it from the
previous engine? Confusing.......
Billo
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
These are severely detailed, about 175k each but still not too bad with dial
up (what I have).
Main Bearing #2
http://members.bigvalley.net/wuji/je...earing/mb2.jpg
Main Bearing #3
http://members.bigvalley.net/wuji/je...earing/mb3.jpg
Main Bearing #4
http://members.bigvalley.net/wuji/je...earing/mb4.jpg
Main Bearing #5
http://members.bigvalley.net/wuji/je...earing/mb5.jpg
Main Bearing #6
http://members.bigvalley.net/wuji/je...earing/mb6.jpg
Don't know if added detail would sway opinion or not :-)
What confuses me about this whole thing is the condition of the cylinders
and the compression readings. If this engine was as worn as you all say
then shouldn't there be a ring ridge on the cylinders? These guys
(visually) are as straight as an arrow. Wouldn't I have much poorer
compression than I have?
Perhaps they bored the cylinder and then put the old parts in it from the
previous engine? Confusing.......
Billo
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
03-04-2004, 01:57 AM
#19
Guest
Posts: n/a
Re: Pulled the rest of the Main Bearings (2-6)
I went out and took another set of pics.
These are severely detailed, about 175k each but still not too bad with dial
up (what I have).
Main Bearing #2
http://members.bigvalley.net/wuji/je...earing/mb2.jpg
Main Bearing #3
http://members.bigvalley.net/wuji/je...earing/mb3.jpg
Main Bearing #4
http://members.bigvalley.net/wuji/je...earing/mb4.jpg
Main Bearing #5
http://members.bigvalley.net/wuji/je...earing/mb5.jpg
Main Bearing #6
http://members.bigvalley.net/wuji/je...earing/mb6.jpg
Don't know if added detail would sway opinion or not :-)
What confuses me about this whole thing is the condition of the cylinders
and the compression readings. If this engine was as worn as you all say
then shouldn't there be a ring ridge on the cylinders? These guys
(visually) are as straight as an arrow. Wouldn't I have much poorer
compression than I have?
Perhaps they bored the cylinder and then put the old parts in it from the
previous engine? Confusing.......
Billo
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
These are severely detailed, about 175k each but still not too bad with dial
up (what I have).
Main Bearing #2
http://members.bigvalley.net/wuji/je...earing/mb2.jpg
Main Bearing #3
http://members.bigvalley.net/wuji/je...earing/mb3.jpg
Main Bearing #4
http://members.bigvalley.net/wuji/je...earing/mb4.jpg
Main Bearing #5
http://members.bigvalley.net/wuji/je...earing/mb5.jpg
Main Bearing #6
http://members.bigvalley.net/wuji/je...earing/mb6.jpg
Don't know if added detail would sway opinion or not :-)
What confuses me about this whole thing is the condition of the cylinders
and the compression readings. If this engine was as worn as you all say
then shouldn't there be a ring ridge on the cylinders? These guys
(visually) are as straight as an arrow. Wouldn't I have much poorer
compression than I have?
Perhaps they bored the cylinder and then put the old parts in it from the
previous engine? Confusing.......
Billo
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c260fg$1qd1g4$1@ID-193866.news.uni-berlin.de...
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and
I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
>
>
03-04-2004, 10:03 AM
#20
Guest
Posts: n/a
Re: Pulled the rest of the Main Bearings (2-6)
You are in the classic case of ok, just what was done to this
'refurbished' engine before you got it....
The top end seems fine with 'excellent' compression except for the one
cylinder not firing. No wear marks with an overbore that some folks do
to increase the cubic inches for an 'increase' in power. You know 'hey
'my' engine is bored out to a 4.5 L' or something. Like folks with
strokers make either a 4.7 or a 4.9 according to how much they overbore
the pistons.
They could also have put in the ring type that call for a smooth bore, I
think the hard 'power' rings or something.
The bottom end looks like it either wasn't touched, or it was all done
10 10 under and got damaged somehow. That thrust bearing usually gets
the most wear and in your case, the sucker seems new.
You have no factory codes on the block to indicate a factory under
crank, so the crank 'was' changed for sure and a 10 10 one is excellent
for a turned crank. I see lots that are 20 to 40 under after a turn.
When gas gets in the oil and/or washes down one cylinder, it cleans all
that hard flaky varnish like stuff off everything, then you have a spark
for a while to build up more, then it gets washed down again.
All these little pieces of hard crap can get in between the bearings and
score/gouge the crap out of them like you see in the photos. Carbon
under heat and pressure turns into diamond eh?
So if this is just a case of gas wash doing in the bearings, then a
stock 10 10 or whatever number is on the back of the main bearings put
in carefully should be all you need.
This can be checked with plastigauge. (do you know what we mean here?)
A micrometer can also be put on the journals and turned around to check
if the crank is still true or round. My guess is it is still ok, I
think you caught it soon enough because those bearings aren't destroyed,
just worn.
Mike
William Oliveri wrote:
>
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo
'refurbished' engine before you got it....
The top end seems fine with 'excellent' compression except for the one
cylinder not firing. No wear marks with an overbore that some folks do
to increase the cubic inches for an 'increase' in power. You know 'hey
'my' engine is bored out to a 4.5 L' or something. Like folks with
strokers make either a 4.7 or a 4.9 according to how much they overbore
the pistons.
They could also have put in the ring type that call for a smooth bore, I
think the hard 'power' rings or something.
The bottom end looks like it either wasn't touched, or it was all done
10 10 under and got damaged somehow. That thrust bearing usually gets
the most wear and in your case, the sucker seems new.
You have no factory codes on the block to indicate a factory under
crank, so the crank 'was' changed for sure and a 10 10 one is excellent
for a turned crank. I see lots that are 20 to 40 under after a turn.
When gas gets in the oil and/or washes down one cylinder, it cleans all
that hard flaky varnish like stuff off everything, then you have a spark
for a while to build up more, then it gets washed down again.
All these little pieces of hard crap can get in between the bearings and
score/gouge the crap out of them like you see in the photos. Carbon
under heat and pressure turns into diamond eh?
So if this is just a case of gas wash doing in the bearings, then a
stock 10 10 or whatever number is on the back of the main bearings put
in carefully should be all you need.
This can be checked with plastigauge. (do you know what we mean here?)
A micrometer can also be put on the journals and turned around to check
if the crank is still true or round. My guess is it is still ok, I
think you caught it soon enough because those bearings aren't destroyed,
just worn.
Mike
William Oliveri wrote:
>
> Hey Guys,
>
> Here's a pic of the main bearings from #2 through #6 where #2 is at the
> bottom of the pic and # is at the top. You can see the worst is #6 and I'm
> curious about #3. What is that thing wrapped around the sides of #3. Is
> that spacer suppose to be there or is it a "fix" of some kind.
>
> Mike, does your theory still hold true? Does this look like it would be
> caused by #2 or is this engine just freaky (nice cylinders without
> crosshatch with bad bearings)?
>
> http://members.bigvalley.net/wuji/je...earings2-6.jpg
>
> If this was local to #2 I was building up to fixing this myself (honing,
> mic'ing, replacing bearings, replacing rings) but now I don't know.
>
> Thanks,
>
> Billo