Today's Message Index:
----------------------
1. 10:18 AM - Re: RV10-List Digest: 0 Msgs - 11/14/20 (Jim Villani)
2. 06:39 PM - Engine Flush (Phil Perry)
3. 07:01 PM - Re: Engine Flush (Kelly McMullen)
4. 07:06 PM - Re: Engine Flush (Tim Olson)
5. 07:21 PM - Re: Engine Flush (Tim Olson)
6. 07:43 PM - Re: Engine Flush (Tim Olson)
7. 08:30 PM - Re: Engine Flush (Phil Perry)
8. 08:39 PM - Re: Engine Flush (Kelly McMullen)
Message 1
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| Subject: | RE: RV10-List Digest: 0 Msgs - 11/14/20 |
How do you unsubscribe?
I use to get an rv10 forum with item's for sale. Now I can't get it anymore
.
I have tried your unsubscribe link numerous times.
Thank you,
Jim Villani
702-379-5524
Jim@Sold702.com
6442 Rock Sparrow
North Las Vegas, Nv 89084
Mammoth Creek Excavation
www.WeDig435.com
Mammoth Creek Mini Storage
www.MammothCreekMiniStorage.com
Great Real Estate Realtor
Great Real Estate Property Management
www.sold702.com
Las Vegas, Nevada
-------- Original message --------
From: RV10-List Digest Server <rv10-list@matronics.com>
Subject: RV10-List Digest: 0 Msgs - 11/14/20
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Message 2
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I have a friend who just bought a C-170 and hes wanting to flush the engine to
remove any sludge and deposits around the piston rings.
It seems like (5 ish) years ago there was a post with this procedure. Something
along the lines of drain the oil. Put the each piston on a compression stroke.
Pour mineral spirits into the cyl, then pull the piston up with the prop
allowing mineral spirits to pass through the rings and ultimately into the sump
- where its drained.
Does anyone have a copy of that procedure? Id like to give it to him if I can
find a copy of it.
Phil
Sent from my iPhone
Message 3
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| Subject: | Re: Engine Flush |
Hi Phil,
I would recommend against such a procedure. The options I would
consider is to either add a quart of MMO, then warm engine up or a
single trip around the pattern.
Other method would be to do oil change, then add recommended amount of
Camguard, and fly for a short # of hours, say 15-20, before drain and
repeat. Cessna 170s did not come with an oil filter, only a screen.
The problem with using something like mineral spirits is that it
seriously degrades the lubricity of the oil. MMO has a little bit better
lubricity.
Were supposed to get 25 hour changes. They have a magnesium oil sump,
which tends to collect moisture around the two oil drains and corrode
the sump. There is no approved repair, especially if it corrodes enough
to leak.
What type of rings it has matters as well. A lot of them with overhauls
30-40 years ago got chrome cylinders with cast iron rings. Even those
with standard rings have a tendency as they get higher time to break one
or more compression rings. This includes both C170s and C172s with the
O-300 engine.
Given that tendency, I would be careful with how diluted the oil might
be. (yes I had it happen in both my 170 and a flying club 172.) You
would not want to flush varnish and sludge out of the ring lands too fast.
Kelly
On 11/16/2020 7:38 PM, Phil Perry wrote:
>
> I have a friend who just bought a C-170 and hes wanting to flush the engine to
remove any sludge and deposits around the piston rings.
>
> It seems like (5 ish) years ago there was a post with this procedure. Something
along the lines of drain the oil. Put the each piston on a compression stroke.
Pour mineral spirits into the cyl, then pull the piston up with the prop
allowing mineral spirits to pass through the rings and ultimately into the
sump - where its drained.
>
> Does anyone have a copy of that procedure? Id like to give it to him if I can
find a copy of it.
>
> Phil
>
> Sent from my iPhone
>
>
>
Message 4
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| Subject: | Re: Engine Flush |
I dont have a copy of the procedure, but our mechanics use that here once in a
while. They just told me about it a couple months ago. It wasnt just mineral spirits,
but a couple other chemicals to I believe. Let me see if I can find out
from them.
Tim
> On Nov 16, 2020, at 8:48 PM, Phil Perry <philperry9@gmail.com> wrote:
>
>
> I have a friend who just bought a C-170 and hes wanting to flush the engine to
remove any sludge and deposits around the piston rings.
>
> It seems like (5 ish) years ago there was a post with this procedure. Something
along the lines of drain the oil. Put the each piston on a compression stroke.
Pour mineral spirits into the cyl, then pull the piston up with the prop
allowing mineral spirits to pass through the rings and ultimately into the
sump - where its drained.
>
> Does anyone have a copy of that procedure? Id like to give it to him if I can
find a copy of it.
>
> Phil
>
> Sent from my iPhone
>
>
>
Message 5
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| Subject: | Re: Engine Flush |
I just asked one of the mechanics. He was happy to talk because he has Covid, along
with his brother and another person at the FBO. Theyre going stir crazy.
He said it is 1 quart of MEK, 1 quart of xylene, 1 quart of hundredweight oil,
and 2 quarts of mineral spirits. Thats what they remember off the top of their
head.
Hope that helps.
Tim
> On Nov 16, 2020, at 9:06 PM, Tim Olson <Tim@myrv10.com> wrote:
>
> I dont have a copy of the procedure, but our mechanics use that here once in
a while. They just told me about it a couple months ago. It wasnt just mineral
spirits, but a couple other chemicals to I believe. Let me see if I can find
out from them.
> Tim
>
>> On Nov 16, 2020, at 8:48 PM, Phil Perry <philperry9@gmail.com> wrote:
>>
>>
>> I have a friend who just bought a C-170 and hes wanting to flush the engine
to remove any sludge and deposits around the piston rings.
>>
>> It seems like (5 ish) years ago there was a post with this procedure. Something
along the lines of drain the oil. Put the each piston on a compression stroke.
Pour mineral spirits into the cyl, then pull the piston up with the prop
allowing mineral spirits to pass through the rings and ultimately into the
sump - where its drained.
>>
>> Does anyone have a copy of that procedure? Id like to give it to him if I can
find a copy of it.
>>
>> Phil
>>
>> Sent from my iPhone
>>
>>
>>
Message 6
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| Subject: | Re: Engine Flush |
Kelly,
Ive never done this before so my questions my be bad.
I do know though that they dont run the engine with this mixture. Its put in the
cylinder through the spark plug holes on the compression stroke and squeezed
through the rings. Then drained and you change oil a couple times and go on
the way. Does that change your opinion of it? From your reply it sounded like
maybe you expected it to be added to the oil?
Tim
> On Nov 16, 2020, at 9:20 PM, Kelly McMullen <kellym@aviating.com> wrote:
>
>
> Hi Phil,
> I would recommend against such a procedure. The options I would consider is
to either add a quart of MMO, then warm engine up or a single trip around the
pattern.
> Other method would be to do oil change, then add recommended amount of Camguard,
and fly for a short # of hours, say 15-20, before drain and repeat. Cessna
170s did not come with an oil filter, only a screen.
> The problem with using something like mineral spirits is that it seriously degrades
the lubricity of the oil. MMO has a little bit better lubricity.
> Were supposed to get 25 hour changes. They have a magnesium oil sump, which
tends to collect moisture around the two oil drains and corrode the sump. There
is no approved repair, especially if it corrodes enough to leak.
> What type of rings it has matters as well. A lot of them with overhauls 30-40
years ago got chrome cylinders with cast iron rings. Even those with standard
rings have a tendency as they get higher time to break one or more compression
rings. This includes both C170s and C172s with the O-300 engine.
> Given that tendency, I would be careful with how diluted the oil might be. (yes
I had it happen in both my 170 and a flying club 172.) You would not want to
flush varnish and sludge out of the ring lands too fast.
>
> Kelly
>
>> On 11/16/2020 7:38 PM, Phil Perry wrote:
>> I have a friend who just bought a C-170 and hes wanting to flush the engine
to remove any sludge and deposits around the piston rings.
>> It seems like (5 ish) years ago there was a post with this procedure. Something
along the lines of drain the oil. Put the each piston on a compression stroke.
Pour mineral spirits into the cyl, then pull the piston up with the prop
allowing mineral spirits to pass through the rings and ultimately into the
sump - where its drained.
>> Does anyone have a copy of that procedure? Id like to give it to him if I can
find a copy of it.
>> Phil
>> Sent from my iPhone
>
>
>
Message 7
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| Subject: | Re: Engine Flush |
That sounds correct, Tim.
I have a procedure fir it somewhere but havent found it. Appreciate the info
(and thoughts Kelly).
Im going to dig around a bit more and if I can find it, Ill pass it along.
Phil
Sent from my iPhone
> On Nov 16, 2020, at 9:48 PM, Tim Olson <Tim@myrv10.com> wrote:
>
>
> Kelly,
> Ive never done this before so my questions my be bad.
>
> I do know though that they dont run the engine with this mixture. Its put in
the cylinder through the spark plug holes on the compression stroke and squeezed
through the rings. Then drained and you change oil a couple times and go
on the way. Does that change your opinion of it? From your reply it sounded
like maybe you expected it to be added to the oil?
> Tim
>
>> On Nov 16, 2020, at 9:20 PM, Kelly McMullen <kellym@aviating.com> wrote:
>>
>>
>> Hi Phil,
>> I would recommend against such a procedure. The options I would consider is
to either add a quart of MMO, then warm engine up or a single trip around the
pattern.
>> Other method would be to do oil change, then add recommended amount of Camguard,
and fly for a short # of hours, say 15-20, before drain and repeat. Cessna
170s did not come with an oil filter, only a screen.
>> The problem with using something like mineral spirits is that it seriously degrades
the lubricity of the oil. MMO has a little bit better lubricity.
>> Were supposed to get 25 hour changes. They have a magnesium oil sump, which
tends to collect moisture around the two oil drains and corrode the sump. There
is no approved repair, especially if it corrodes enough to leak.
>> What type of rings it has matters as well. A lot of them with overhauls 30-40
years ago got chrome cylinders with cast iron rings. Even those with standard
rings have a tendency as they get higher time to break one or more compression
rings. This includes both C170s and C172s with the O-300 engine.
>> Given that tendency, I would be careful with how diluted the oil might be. (yes
I had it happen in both my 170 and a flying club 172.) You would not want
to flush varnish and sludge out of the ring lands too fast.
>>
>> Kelly
>>
>>>> On 11/16/2020 7:38 PM, Phil Perry wrote:
>>> I have a friend who just bought a C-170 and hes wanting to flush the engine
to remove any sludge and deposits around the piston rings.
>>> It seems like (5 ish) years ago there was a post with this procedure. Something
along the lines of drain the oil. Put the each piston on a compression
stroke. Pour mineral spirits into the cyl, then pull the piston up with the
prop allowing mineral spirits to pass through the rings and ultimately into the
sump - where its drained.
>>> Does anyone have a copy of that procedure? Id like to give it to him if I
can find a copy of it.
>>> Phil
>>> Sent from my iPhone
>>
>>
>>
>
>
>
>
Message 8
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| Subject: | Re: Engine Flush |
Tim,
I could see someone trying to run the engine. However, even in the case
that they did as prescribed, those are very strong chemicals and by the
time you do all six, parts of the engine will not be lubricated, and
sludge, varnish etc tend to loosen and come out unpredictably. IMHO it
would be much safer to do 25 hour changes with normal oil and a dose of
Camguard. It will do a lot to clean inside the engine without ever
subjecting it to poor lubrication. The other thing it that the only time
something like that might be warranted is if there are known stuck
rings. Otherwise you are just increasing ring land gaps putting more
stress on the rings.
Kelly
On 11/16/2020 8:42 PM, Tim Olson wrote:
>
> Kelly,
> Ive never done this before so my questions my be bad.
>
> I do know though that they dont run the engine with this mixture. Its put in
the cylinder through the spark plug holes on the compression stroke and squeezed
through the rings. Then drained and you change oil a couple times and go
on the way. Does that change your opinion of it? From your reply it sounded
like maybe you expected it to be added to the oil?
> Tim
>
>> On Nov 16, 2020, at 9:20 PM, Kelly McMullen <kellym@aviating.com> wrote:
>>
>>
>> Hi Phil,
>> I would recommend against such a procedure. The options I would consider is
to either add a quart of MMO, then warm engine up or a single trip around the
pattern.
>> Other method would be to do oil change, then add recommended amount of Camguard,
and fly for a short # of hours, say 15-20, before drain and repeat. Cessna
170s did not come with an oil filter, only a screen.
>> The problem with using something like mineral spirits is that it seriously degrades
the lubricity of the oil. MMO has a little bit better lubricity.
>> Were supposed to get 25 hour changes. They have a magnesium oil sump, which
tends to collect moisture around the two oil drains and corrode the sump. There
is no approved repair, especially if it corrodes enough to leak.
>> What type of rings it has matters as well. A lot of them with overhauls 30-40
years ago got chrome cylinders with cast iron rings. Even those with standard
rings have a tendency as they get higher time to break one or more compression
rings. This includes both C170s and C172s with the O-300 engine.
>> Given that tendency, I would be careful with how diluted the oil might be. (yes
I had it happen in both my 170 and a flying club 172.) You would not want
to flush varnish and sludge out of the ring lands too fast.
>>
>> Kelly
>>
>>> On 11/16/2020 7:38 PM, Phil Perry wrote:
>>> I have a friend who just bought a C-170 and hes wanting to flush the engine
to remove any sludge and deposits around the piston rings.
>>> It seems like (5 ish) years ago there was a post with this procedure. Something
along the lines of drain the oil. Put the each piston on a compression
stroke. Pour mineral spirits into the cyl, then pull the piston up with the
prop allowing mineral spirits to pass through the rings and ultimately into the
sump - where its drained.
>>> Does anyone have a copy of that procedure? Id like to give it to him if I
can find a copy of it.
>>> Phil
>>> Sent from my iPhone
>>
>>
>>
>
>
>
>
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