oil hot enuf?
Moderators: GAHorn, Karl Towle, Bruce Fenstermacher
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simatos
- Posts: 108
- Joined: Tue Sep 07, 2004 9:31 pm
oil hot enuf?
Flying alot this week and a little surprised to see lots of what looks like water coming from the crankcase breather drain tube on the floor under the plane a few hours after parking it. The oil temp runs 175 on the scott gauge. Is this too low to cook out the water? Do you guys see the same thing at all. Also while i am on the phone with you all where is the best place to get a main tailwheel spring. I have no idea how old mine is and i was thinking about putting in a new one especially if my landings don't improve. Thanks Gary
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GAHorn
- Posts: 21295
- Joined: Fri Apr 12, 2002 8:45 pm
Univair makes the spring under FAA-PMA, and their product is also sold by Aircraft Spruce. You do not need to replace the entire stack...only the main spring (lowest one).
http://www.univair.com/
http://www.aircraftspruce.com/
Water is a natural by-product of combustion and it's OK and common to see a little drop out of the crankcase breather along with some oil. Your oil temp is great for summertime. Oh. Wait a minute. It's winter down there isn't it?
Well, anyway...don't worry about a little water in it. (But that's a major reason I do not recommend air/oil seperators in breather lines....they return water-contaminated oil to the crankcase.)
http://www.univair.com/
http://www.aircraftspruce.com/
Water is a natural by-product of combustion and it's OK and common to see a little drop out of the crankcase breather along with some oil. Your oil temp is great for summertime. Oh. Wait a minute. It's winter down there isn't it?
Well, anyway...don't worry about a little water in it. (But that's a major reason I do not recommend air/oil seperators in breather lines....they return water-contaminated oil to the crankcase.)
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
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Bruce Fenstermacher
- Posts: 10422
- Joined: Tue Apr 23, 2002 11:24 am
Gary
175 degrees on the oil temperature won't hurt your engine other than water vapor may not be boiled off an it remains in the engine.
First we don't really know much about our situation where yo are obtaining the 175. From my experience 175 is a little cool with 0ATs of say 70F and above. If the OAT in 30F then it's not unusual.
First you want to confirm your gage is reading correctly by comparing the temperature reading with another known good source such as putting the temperature probe in a can of heated oil along with a candy thermometer and comparing them. These oil temperature gages fail quite frequently.
Second if you really are reading 175 and it's cold out then you should probably consider some type of winterization kit. 180 degrees is the most excepted low level I've seen in order to boil of water in the oil and just over that is what I'd be shooting for.
If it's hot out and your only getting 175 true reading consider yourself to have a rare 170.
You might consider making your baffling a little less efficient to warm of the oil a bit.
175 degrees on the oil temperature won't hurt your engine other than water vapor may not be boiled off an it remains in the engine.
First we don't really know much about our situation where yo are obtaining the 175. From my experience 175 is a little cool with 0ATs of say 70F and above. If the OAT in 30F then it's not unusual.
First you want to confirm your gage is reading correctly by comparing the temperature reading with another known good source such as putting the temperature probe in a can of heated oil along with a candy thermometer and comparing them. These oil temperature gages fail quite frequently.
Second if you really are reading 175 and it's cold out then you should probably consider some type of winterization kit. 180 degrees is the most excepted low level I've seen in order to boil of water in the oil and just over that is what I'd be shooting for.
If it's hot out and your only getting 175 true reading consider yourself to have a rare 170.
You might consider making your baffling a little less efficient to warm of the oil a bit. CAUTION - My forum posts may be worth what you paid for them!
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
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