Today's Message Index:
----------------------
1. 05:17 AM - Re: Engine Through-Stud Sheer... (Myron Ashley)
2. 05:58 AM - Re: Engine Through-Stud Sheer... (Moe - Ross Racing Pistons)
3. 09:04 AM - Re: Engine Through-Stud Sheer... (Robert S. Randazzo)
4. 09:12 AM - Re: Engine Through-Stud Sheer... (David Owens)
5. 09:19 AM - Re: Engine Through-Stud Sheer... (David Owens)
6. 09:21 AM - Re: Engine Through-Stud Sheer... (David Owens)
7. 09:41 AM - Re: Engine Through-Stud Sheer... (Bruce Campbell)
8. 10:26 AM - Re: Engine Through-Stud Sheer... (David Owens)
9. 11:09 AM - Re: Engine Through-Stud Sheer... (Bruce Campbell)
10. 11:37 AM - Re: Engine Through-Stud Sheer... (David Owens)
11. 11:49 AM - The IO-550 Engine, Was: Engine Through-Stud Sheer... (BobsV35B@aol.com)
12. 12:12 PM - Re: The IO-550 Engine, Was: Engine Through-Stud Sheer... (Bruce Campbell)
13. 02:50 PM - Re: Engine Through-Stud Sheer... (Nancy Gilliam)
14. 02:59 PM - Re: Engine Through-Stud Sheer... (BobsV35B@aol.com)
15. 03:17 PM - Re: Engine Through-Stud Sheer... (Nancy Gilliam)
16. 03:30 PM - Re: Engine Through-Stud Sheer... (Bruce Campbell)
17. 03:38 PM - Re: Engine Through-Stud Sheer... (BobsV35B@aol.com)
18. 03:43 PM - Re: Engine Through-Stud Sheer... (BobsV35B@aol.com)
19. 08:56 PM - AC Manual (Ray Mansfield)
20. 10:59 PM - Through Stud Sheer Pictures... (Robert S. Randazzo)
21. 11:33 PM - Re: Through Stud Sheer Pictures... (mike floyd)
Message 1
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| Subject: | Re: Engine Through-Stud Sheer... |
Hello Robert,
Describe the broken area of the stud when you get it out of the case.
(for example, is the fracture clean and straight, did the material neck
down like a coke bottle at the fracture, was the fracture straight
across like a pipe cutter or jagged like glass.) That will help
determine the cause of failure from a materials standpoint.
Thanks,
Myron
----- Original Message -----
From: Robert S. Randazzo
To: commander-list@matronics.com
Sent: Monday, August 13, 2007 9:49 PM
Subject: Commander-List: Engine Through-Stud Sheer...
Commanders-
Seems not ALL the news surrounding N414C's return to flight is good.
One of the dozen-or-so squawks that we listed on the airplane after
purchase was that the left engine had a tendency to produce oil in the
cowling. The usual minor drips and items were found and cleared up
during the two year down time- and a series of engine runs seemed to
corroborate that the oil seepage was fixed.
Unfortunately- the seepage returned during our test flight of last
Friday- so today they opened up the cowl and started searching once
again. The result was that they discovered that one of the mid-case
through studs was sheered inside the case. Additionally- the inner-most
cooling fin on each of the #3/#4 cylinders shows a very small impact
dent where (we're assuming here) the free ends of the stud impacted the
fins at the time it sheered?
Tomorrow is going to be an interesting day- as the #3/#4 cylinders
will get pulled- and all of the surrounding area will get a good looking
over. As would be expected- a call to TCM was rebuffed as they lack the
corporate responsibility to provide any type of data support for the
engine.
I thought I'd run the squawk by you all to see if anyone has had any
similar experience? Anyone ever heard of such a thing? Any ideas what
might cause it ? Any guesses as to whether we are looking at a minor,
known problem or a more serious warning sign of potential catastrophic
failure?
Obviously the experts in the shop will be making the decisions
surrounding and inspection/replacement of the stud, but there is a
tremendous amount of expertise here- so I thought I'd solicit..
Robert S. Randazzo
N414C
Message 2
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| Subject: | Engine Through-Stud Sheer... |
Robert,
Any chance of a fairly clear photo of both ends of the broken stud? Also,
what type of engines are these?
Moe
_____
From: owner-commander-list-server@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of Myron Ashley
Sent: Tuesday, August 14, 2007 5:16 AM
Subject: Re: Commander-List: Engine Through-Stud Sheer...
Hello Robert,
Describe the broken area of the stud when you get it out of the case. (for
example, is the fracture clean and straight, did the material neck down like
a coke bottle at the fracture, was the fracture straight across like a pipe
cutter or jagged like glass.) That will help determine the cause of failure
from a materials standpoint.
Thanks,
Myron
----- Original Message -----
From: Robert S. Randazzo <mailto:rsrandazzo@precisionmanuals.com>
Sent: Monday, August 13, 2007 9:49 PM
Subject: Commander-List: Engine Through-Stud Sheer...
Commanders-
Seems not ALL the news surrounding N414C's return to flight is good.
One of the dozen-or-so squawks that we listed on the airplane after purchase
was that the left engine had a tendency to produce oil in the cowling. The
usual minor drips and items were found and cleared up during the two year
down time- and a series of engine runs seemed to corroborate that the oil
seepage was fixed.
Unfortunately- the seepage returned during our test flight of last Friday-
so today they opened up the cowl and started searching once again. The
result was that they discovered that one of the mid-case through studs was
sheered inside the case. Additionally- the inner-most cooling fin on each
of the #3/#4 cylinders shows a very small impact dent where (we're assuming
here) the free ends of the stud impacted the fins at the time it sheered?
Tomorrow is going to be an interesting day- as the #3/#4 cylinders will get
pulled- and all of the surrounding area will get a good looking over. As
would be expected- a call to TCM was rebuffed as they lack the corporate
responsibility to provide any type of data support for the engine.
I thought I'd run the squawk by you all to see if anyone has had any similar
experience? Anyone ever heard of such a thing? Any ideas what might cause
it ? Any guesses as to whether we are looking at a minor, known problem or
a more serious warning sign of potential catastrophic failure?
Obviously the experts in the shop will be making the decisions surrounding
and inspection/replacement of the stud, but there is a tremendous amount of
expertise here- so I thought I'd solicit..
Robert S. Randazzo
N414C
href="http://www.matronics.com/Navigator?Commander-List">http://www.matronic
s.com/Navigator?Commander-List
href="http://forums.matronics.com">http://forums.matronics.com
Message 3
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| Subject: | Engine Through-Stud Sheer... |
Moe-
I'll take some photos this morning once they get the piece out.
GTSIO-520Ks.
Robert
From: owner-commander-list-server@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of Moe - Ross
Racing Pistons
Sent: Tuesday, August 14, 2007 6:02 AM
Subject: RE: Commander-List: Engine Through-Stud Sheer...
Robert,
Any chance of a fairly clear photo of both ends of the broken stud? Also,
what type of engines are these?
Moe
_____
From: owner-commander-list-server@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of Myron Ashley
Sent: Tuesday, August 14, 2007 5:16 AM
Subject: Re: Commander-List: Engine Through-Stud Sheer...
Hello Robert,
Describe the broken area of the stud when you get it out of the case. (for
example, is the fracture clean and straight, did the material neck down like
a coke bottle at the fracture, was the fracture straight across like a pipe
cutter or jagged like glass.) That will help determine the cause of failure
from a materials standpoint.
Thanks,
Myron
----- Original Message -----
From: Robert S. Randazzo <mailto:rsrandazzo@precisionmanuals.com>
Sent: Monday, August 13, 2007 9:49 PM
Subject: Commander-List: Engine Through-Stud Sheer...
Commanders-
Seems not ALL the news surrounding N414C's return to flight is good.
One of the dozen-or-so squawks that we listed on the airplane after purchase
was that the left engine had a tendency to produce oil in the cowling. The
usual minor drips and items were found and cleared up during the two year
down time- and a series of engine runs seemed to corroborate that the oil
seepage was fixed.
Unfortunately- the seepage returned during our test flight of last Friday-
so today they opened up the cowl and started searching once again. The
result was that they discovered that one of the mid-case through studs was
sheered inside the case. Additionally- the inner-most cooling fin on each
of the #3/#4 cylinders shows a very small impact dent where (we're assuming
here) the free ends of the stud impacted the fins at the time it sheered?
Tomorrow is going to be an interesting day- as the #3/#4 cylinders will get
pulled- and all of the surrounding area will get a good looking over. As
would be expected- a call to TCM was rebuffed as they lack the corporate
responsibility to provide any type of data support for the engine.
I thought I'd run the squawk by you all to see if anyone has had any similar
experience? Anyone ever heard of such a thing? Any ideas what might cause
it ? Any guesses as to whether we are looking at a minor, known problem or
a more serious warning sign of potential catastrophic failure?
Obviously the experts in the shop will be making the decisions surrounding
and inspection/replacement of the stud, but there is a tremendous amount of
expertise here- so I thought I'd solicit..
Robert S. Randazzo
N414C
href="http://www.matronics.com/Navigator?Commander-List">http://www.matronic
s.com/Navigator?Commander-List
href="http://forums.matronics.com">http://forums.matronics.com
__________ NOD32 2459 (20070814) Information __________
Message 4
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| Subject: | Re: Engine Through-Stud Sheer... |
We just had that happen on 14AV, and the 3 broken studs that mount the
#5 jug were found inside the front cown upon opening... A crack at the
top of the case was the cause of the oil leak... The case had to be
replaced... 400 appx hours on this TCM io520...
David Owens
Aerial Viewpoint
N14AV
AC-500A-Colemill
Message 5
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| Subject: | Re: Engine Through-Stud Sheer... |
Here are a few pics of the damage...
Message 6
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| Subject: | Re: Engine Through-Stud Sheer... |
another-1
David Owens
Aerial Viewpoint
N14AV
AC-500A-Colemill
Message 7
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| Subject: | Engine Through-Stud Sheer... |
This is a common problem with IO 520s. Just ask any Bonanza or Baron
owner. If anyone is adventurous, the IO550 is reputed to be much better
about this, and costs very little delta to upgrade. It may be worth 500a
owners getting together and doing an STC.
Bummer about TCM. I've had similar experiences. Prefer Lycoming
engines these days, though they aren't as smooth.
Bruce
From: owner-commander-list-server@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of David
Owens
Sent: Tuesday, August 14, 2007 9:11 AM
Subject: Re: Commander-List: Engine Through-Stud Sheer...
We just had that happen on 14AV, and the 3 broken studs that mount the
#5 jug were found inside the front cown upon opening... A crack at the
top of the case was the cause of the oil leak... The case had to be
replaced... 400 appx hours on this TCM io520...
David Owens
Aerial Viewpoint
N14AV
AC-500A-Colemill
Message 8
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| Subject: | Re: Engine Through-Stud Sheer... |
Good idea about the 550... A guy in the hangar here has a Bonanza with
one and he loves it... I guess put out a call for all 12 of the
existing 500A owners left to see what interest might be shown ;)
David Owens
Aerial Viewpoint
N14AV
AC-500A-Colemill
Message 9
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| Subject: | Engine Through-Stud Sheer... |
There was a gentleman who went through the effort to get the GO480 put
on the 520s type data sheet as an approved engine. It took about 3
years, but it did get done. I don't know what the real effect of the
experimental designation he had to endure for that period was. It does
appear that after the initial test period (about 40 hours of flying) the
plane was usable for regular flying according to the operating
limitations.
Bruce
From: owner-commander-list-server@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of David
Owens
Sent: Tuesday, August 14, 2007 10:25 AM
Subject: Re: Commander-List: Engine Through-Stud Sheer...
Good idea about the 550... A guy in the hangar here has a Bonanza with
one and he loves it... I guess put out a call for all 12 of the
existing 500A owners left to see what interest might be shown ;)
David Owens
Aerial Viewpoint
N14AV
AC-500A-Colemill
Message 10
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| Subject: | Re: Engine Through-Stud Sheer... |
Hmm, I guess it would be something to think about... a field approval is
probably out of the question. We fly in restricted catagory already
because of odd altitudes and direction in TSA's, I wonder if that would
do it... ;)
David Owens
Aerial Viewpoint
N14AV
AC-500A-Colemill
Message 11
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| Subject: | Engine Through-Stud Sheer... |
Good Afternoon All,
May I interject another voice favoring the IO-550 engine?
We are currently operating three of them in Bonanzas and find it to be the
best money we ever spent on those airplanes. The airplanes go faster, climb
better and burn less fuel.
How can this all be true?
The engine weighs no more than, and usually less than, any of the IO-470 or
IO-520 engines it is replacing.
In some versions, it is as much as nine pounds lighter.
The 250 HP version of the IO-470C is nine pounds heavier than the 300
horsepower IO-550-B.
It fits in the same space because the spacing of the cylinders on the
crankcase is the same and has been the same since Continental started the fl
at six
program with the E-165 engine.
There is no need to beef the structure because the engine weighs no more.
If the gross weight of the airplane and the limiting speeds are not changed
,
the only structural consideration is the additional torque and that effect
is generally so small that it can be disregarded.
On the Bonanzas, there have been no structural beef ups of any kind needed
when the 550 is replacing a 470 or 520 engine. If the 550 is replacing an
E-series engine, beef up is required due to a sixty pound increase in the we
ight
of the engine over the E-series one.
In most cases, there is very little need for baffling changes for any reaso
n
other than to provide better cooling. Everything fits in the same space!
Most installations will need new baffling because with more power, there
will be more heat developed, but for the Beech products, providing better
cooling has not been a problem, we have more trouble keeping them warm than
we do
keeping them cool.
It goes faster and burns less fuel because the rate of climb is so good tha
t
you will cruise two to four thousand feet higher on any representative stag
e
length flight.
The higher altitude allows the same or slightly higher true airspeed while
using slightly less power. The lower indicated airspeed places the aircraft
closer to best L/D speed while using slightly less power than was needed fo
r
that same true airspeed when operated at a lower altitude.
By pushing the engine a bit harder, you can go faster, but the best way to
take advantage of the more powerful engine is to get up high and take advant
age
of the efficiency that is then available.
The higher power available means that you will almost always be at an
altitude where Lean Of Peak operations are not only practical, but very des
irable.
It really is one of the few win/win engine changes available.
I know the market among the Commanders is so small that it is unlikely any
convertor wants to spend the money required to convince the Federalies of th
e
suitability of such an installation, but I think a TC500 equipped with
IO-550-Bs would be a marvelous machine.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
In a message dated 8/14/2007 1:11:54 P.M. Central Daylight Time,
brcamp@windows.microsoft.com writes:
There was a gentleman who went through the effort to get the GO480 put on
the 520s type data sheet as an approved engine. It took about 3 years, but
it
did get done. I don=99t know what the real effect of the experimental
designation he had to endure for that period was. It does appear that afte
r the
initial test period (about 40 hours of flying) the plane was usable for reg
ular
flying according to the operating limitations.
Bruce
From: owner-commander-list-server@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of David Owens
Sent: Tuesday, August 14, 2007 10:25 AM
Subject: Re: Commander-List: Engine Through-Stud Sheer...
Good idea about the 550... A guy in the hangar here has a Bonanza with one
and he loves it... I guess put out a call for all 12 of the existing 500A
owners left to see what interest might be shown ;
David Owens
Aerial Viewpoint
N14AV
AC-500A-Colemill
t
http://discover.aol.com/memed/aolcom30tour
Message 12
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| Subject: | Engine Through-Stud Sheer... |
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Cg=
Message 13
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| Subject: | Engine Through-Stud Sheer... |
A friend of mine had to make an emergency landing last year in a Cessna 182.
Found 2 thru bolts sheared off in the case. They think it was due to over
torque, or uneven torque on all the cylinder thru bolts.
Roland Gilliam
>From: "nico css" <nico@cybersuperstore.com>
>To: <commander-list@matronics.com>
>Subject: RE: Commander-List: Engine Through-Stud Sheer...
>Date: Mon, 13 Aug 2007 20:07:50 -0700
>
>Do you think it would shear off if wasn't over-torqued? If the stud failed
>due to abuse on a previous occasion, perhaps replacing them all might be
>considered. Just guessing.
>
>
> _____
>
>From: owner-commander-list-server@matronics.com
>[mailto:owner-commander-list-server@matronics.com] On Behalf Of Robert S.
>Randazzo
>Sent: Monday, August 13, 2007 7:50 PM
>To: commander-list@matronics.com
>Subject: Commander-List: Engine Through-Stud Sheer...
>
>
>Commanders-
>
>
>Seems not ALL the news surrounding N414C's return to flight is good.
>
>
>One of the dozen-or-so squawks that we listed on the airplane after
>purchase
>was that the left engine had a tendency to produce oil in the cowling. The
>usual minor drips and items were found and cleared up during the two year
>down time- and a series of engine runs seemed to corroborate that the oil
>seepage was fixed.
>
>
>Unfortunately- the seepage returned during our test flight of last Friday-
>so today they opened up the cowl and started searching once again. The
>result was that they discovered that one of the mid-case through studs was
>sheered inside the case. Additionally- the inner-most cooling fin on each
>of the #3/#4 cylinders shows a very small impact dent where (we're assuming
>here) the free ends of the stud impacted the fins at the time it sheered?
>
>
>Tomorrow is going to be an interesting day- as the #3/#4 cylinders will get
>pulled- and all of the surrounding area will get a good looking over. As
>would be expected- a call to TCM was rebuffed as they lack the corporate
>responsibility to provide any type of data support for the engine.
>
>
>I thought I'd run the squawk by you all to see if anyone has had any
>similar
>experience? Anyone ever heard of such a thing? Any ideas what might cause
>it ? Any guesses as to whether we are looking at a minor, known problem or
>a more serious warning sign of potential catastrophic failure?
>
>
>Obviously the experts in the shop will be making the decisions surrounding
>and inspection/replacement of the stud, but there is a tremendous amount of
>expertise here- so I thought I'd solicit..
>
>
>Robert S. Randazzo
>
>N414C
>
>
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Message 14
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| Subject: | Re: Engine Through-Stud Sheer... |
Good Afternoon Roland,
It might be helpful to check to see if any cylinders had been pulled since
the last build up. Some mechanics skip the part about torqueing the nuts on
the opposing cylinders. I think that is a potential for setting up the uneven
stresses that cause the internal breaks. Just a theory, no extensive data to
show cause and effect though.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
In a message dated 8/14/2007 4:51:18 P.M. Central Daylight Time,
amg3636@hotmail.com writes:
A friend of mine had to make an emergency landing last year in a Cessna 182.
Found 2 thru bolts sheared off in the case. They think it was due to over
torque, or uneven torque on all the cylinder thru bolts.
Roland Gilliam
http://discover.aol.com/memed/aolcom30tour
Message 15
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| Subject: | Re: Engine Through-Stud Sheer... |
Hi Bob ,
That makes sense, however this was the first time a cylinder had been off
since the major.
Thanks,
Roland
>From: BobsV35B@aol.com
>To: commander-list@matronics.com
>Subject: Re: Commander-List: Engine Through-Stud Sheer...
>Date: Tue, 14 Aug 2007 17:59:00 EDT
>
>
>Good Afternoon Roland,
>
>It might be helpful to check to see if any cylinders had been pulled since
>the last build up. Some mechanics skip the part about torqueing the nuts
>on
>the opposing cylinders. I think that is a potential for setting up the
>uneven
>stresses that cause the internal breaks. Just a theory, no extensive data
>to
>show cause and effect though.
>
>Happy Skies,
>
>Old Bob
>AKA
>Bob Siegfried
>Ancient Aviator
>Stearman N3977A
>Brookeridge Air Park LL22
>Downers Grove, IL 60516
>630 985-8503
>
>
>In a message dated 8/14/2007 4:51:18 P.M. Central Daylight Time,
>amg3636@hotmail.com writes:
>
>A friend of mine had to make an emergency landing last year in a Cessna
>182.
>Found 2 thru bolts sheared off in the case. They think it was due to over
>torque, or uneven torque on all the cylinder thru bolts.
>
>Roland Gilliam
>
>
>http://discover.aol.com/memed/aolcom30tour
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Message 16
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| Subject: | Engine Through-Stud Sheer... |
Continental is notorious for its quality control. Sac Sky Ranch used to
do a whole presentation on this to the EAA chapter. There's no reason to
think this is impossible to happen at the factory.
Bruce
-----Original Message-----
From: owner-commander-list-server@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of Nancy
Gilliam
Sent: Tuesday, August 14, 2007 3:17 PM
Subject: Re: Commander-List: Engine Through-Stud Sheer...
<amg3636@hotmail.com>
Hi Bob ,
That makes sense, however this was the first time a cylinder had been
off
since the major.
Thanks,
Roland
>From: BobsV35B@aol.com
>To: commander-list@matronics.com
>Subject: Re: Commander-List: Engine Through-Stud Sheer...
>Date: Tue, 14 Aug 2007 17:59:00 EDT
>
>
>Good Afternoon Roland,
>
>It might be helpful to check to see if any cylinders had been pulled
since
>the last build up. Some mechanics skip the part about torqueing the
nuts
>on
>the opposing cylinders. I think that is a potential for setting up the
>uneven
>stresses that cause the internal breaks. Just a theory, no extensive
data
>to
>show cause and effect though.
>
>Happy Skies,
>
>Old Bob
>AKA
>Bob Siegfried
>Ancient Aviator
>Stearman N3977A
>Brookeridge Air Park LL22
>Downers Grove, IL 60516
>630 985-8503
>
>
>In a message dated 8/14/2007 4:51:18 P.M. Central Daylight Time,
>amg3636@hotmail.com writes:
>
>A friend of mine had to make an emergency landing last year in a
Cessna
>182.
>Found 2 thru bolts sheared off in the case. They think it was due to
over
>torque, or uneven torque on all the cylinder thru bolts.
>
>Roland Gilliam
>
>
>http://discover.aol.com/memed/aolcom30tour
_________________________________________________________________
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Message 17
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| Subject: | Re: Engine Through-Stud Sheer... |
In a message dated 8/14/2007 5:18:21 P.M. Central Daylight Time,
amg3636@hotmail.com writes:
Hi Bob ,
That makes sense, however this was the first time a cylinder had been off
since the major.
Thanks,
Roland
Strike That One!!<G>
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
http://discover.aol.com/memed/aolcom30tour
Message 18
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| Subject: | Re: Engine Through-Stud Sheer... |
In a message dated 8/14/2007 5:18:21 P.M. Central Daylight Time,
amg3636@hotmail.com writes:
Hi Bob ,
That makes sense, however this was the first time a cylinder had been off
since the major.
Thanks,
Roland
However, I still think under torqueing causes more problems than over
torqueing. Anything that is under torqued gets stretched all the time. If it is
torqued properly, it never moves.
At least, that's the theory<g>.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503
http://discover.aol.com/memed/aolcom30tour
Message 19
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Hello,
I fly a Aero Commander 680 FLP with the Mr. RPM Conversion. I'm in
need of a manual for the air conditioning system. It's not the standard
system that came on the plane. I believe it's the same system that is
on an Aero Commander 690. The system is located aft of the baggage
compartment with a compressor turned by an electric motor. (A $6,000
motor...I know, it's been replaced twice) The evaporators are under the
back seat. If anyone knows where I can locate an operation or
maintenance manual or both please let me know. Thank you.
Ray Mansfield
hcourier@cox.net
850-217-5185
Message 20
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| Subject: | Through Stud Sheer Pictures... |
Commanders!
Here are a few (not so good) images of the sheered through stud.
It is interesting to note that the stud appears to have been damaged/bent at
some point. Possibly during installation? We found what appear to be
impact marks from a hammer or ram on one end. Go figure.
The internals of the engine appear fine- looks like a brand new engine on
the inside. No metal found in the oil, and the cylinder and pushrods are
fine.
We are trying to get some guidance on what should happen with this engine.
The hope is that the stud can be replaced- and we'll be good-to-go.
I'll keep you all posted.
Robert S. Randazzo
Message 21
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| Subject: | Through Stud Sheer Pictures... |
Robert,
With the expert input you are getting from Moe at Ross Pistons and Myron
Ashley you are receiving. You have more than enough input to figure this
out.
What I have seen before was the bearing shell coming loose in the crankcase
where it is clamped between the the cylinder through studs. The way to check
for that is to use a long probe on the bearing shell and see if there is
obvious movement between the case and the bearing.
Also examine the crankcase where the stud came out for cracks per David
Owens. They don't call them Crackinentals for nothing.
Mike
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