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Ernie Amadio
Joined: 11 Jan 2006
Posts: 2
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 Posted: Wed Aug 11, 2010 11:24 am Post subject: van's oil temp. gaugevan's oil temp. gauge |
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Ben,
It's my understanding that the oil is drawn from the sump, pumped to the cooler, circulated through the engine, and then drains back to the sump. If so, then I want to know the temp coming from the cooler, since that is what the engine sees.
Unless I'm missing something here.
Ernie Amadio
RV-6 very slow buid
[quote][b]
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n801bh(at)netzero.com
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| Posted: Wed Aug 11, 2010 2:39 pm Post subject: van's oil temp. gaugevan's oil temp. gauge |
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Hi. The motor is transferring heat into the oil as it runs. If incoming oil is 180 and the sump oil is at say 240 then knowing the higher number is critical in gauging the condition of the engine and to be able to choose the correct oil for that application. The easiest comparison is coolant temp thats displayed in all water cooled engines, like your car. That temp is taked directly from the engine right at the thermostat housing, which is the hottest reading. Obtaining water temp from coolant that's coming from the radiator and at its coolest is of no real value to most people.
On my experimental I probe water temp in three locations. My set up is 'highly' experimental and I WANT to know the temp difference. By comparing those numbers I can calculate my radiators ability to shed heat. I can see if I am getting on the backside of the cooling curve.
About 20 minutes into this video I explain how this works..
http://video.google.com/videoplay?docid=-7272451917550730841&hl=en#
do not archive
Tailwinds....
Ben Haas
N801BH
www.haaspowerair.com
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ceengland(at)bellsouth.ne
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| Posted: Wed Aug 11, 2010 6:03 pm Post subject: van's oil temp. gaugevan's oil temp. gauge |
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But... the a/c engine manufacturer specifies acceptable temp range and
they specify measuring after the cooler, entering the engine. Logically,
they would know how much heat gain there will be as the oil finds its
way through the engine if cyl head temps are in acceptable range.
It's difficult to directly compare numbers between air cooled a/c
engines & automotive engines; you just need to know how/where the values
are measured, & what the limits are, for each.
Charlie
On 8/11/2010 5:34 PM, n801bh(at)netzero.com wrote:
[quote]
Hi. The motor is transferring heat into the oil as it runs. If
incoming oil is 180 and the sump oil is at say 240 then knowing the
higher number is critical in gauging the condition of the engine and
to be able to choose the correct oil for that application. The easiest
comparison is coolant temp thats displayed in all water cooled
engines, like your car. That temp is taked directly from the engine
right at the thermostat housing, which is the hottest
reading. Obtaining water temp from coolant that's coming from the
radiator and at its coolest is of no real value to most people.
On my experimental I probe water temp in three locations. My set up is
'highly' experimental and I WANT to know the temp difference. By
comparing those numbers I can calculate my radiators ability to shed
heat. I can see if I am getting on the backside of the cooling curve.
About 20 minutes into this video I explain how this works..
http://video.google.com/videoplay?docid=-7272451917550730841&hl=en
<http://video.google.com/videoplay?docid=-7272451917550730841&hl=en>#
do not archive
Tailwinds....
Ben Haas
N801BH
www.haaspowerair.com
--------
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
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