----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----John, My C-90 was recently overhauled - 110 TTSMOH. I'm getting 163 deg F, with oil press at 45 psi, oprating at 2400 rpm, 2000' msl, OAT 73 deg F. I'm sure not exceeding the OAT plus 110 deg figure (some say plus 100 ?). My concern is that my oil temp may be running too cool, especially if it lowers when the ambient temps drop after the warm Summer months. If so, I might have to get some of the baffling modified? I'm told I could verify the oil temp gauge reading by removing the temp sensor bulb from the engine and immersing it it boiling oil or water in a can while having someone read the cockpit gauge. That is beyond my limited mechanical skills. Alternately, I'm told I could (quickly !!) leap out of the airplane after shutdown, try not to fall off my wing, open my LH cowl , remove the oil filler cap and insert a "candy thermometer". Presumably, comparing the thermometer reading with the temp gage reading on shutdown, might give a fairly accurate gauge calibration. I suggest you try this first and let me know how you make out ! Be careful on the wing, and have a screwdriver, candy thermometer and a First aid Kit handy at your shutdown area. Also, you may want to have a friend film it for TV's America's Funniest Home Videos ! DON
Don Bowen
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> Date: Mon, 5 Jun 2006 09:48:36 -0500
> From: [EMAIL PROTECTED]
> To: [email protected]
> Subject: [COUPERS-TECH] Oil Temperature and Oil Pressure
>
> ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
>
>
> Given my question of a few weeks ago and the current thread regarding
> the same, I would like to let you know what I have done. In addition,
> I have a question...
>
> I am running a C85-12 in my Ercoupe. On the initial flights after
> restoration I was getting between 180 and 220 degree oil temperature
> readings after about 1 hour of flight with an OAT of about 85 degrees.
> Oil pressure was constant at 40 lbs.
>
> This weekend I flew twice for about 1.5 hours each flight. There was
> a two hour period between flights. During the second flight the oil
> temperature rose to 230 degrees with an oil pressure drop to 35 lbs.
> The OAT throughout the day was about 93 degrees.
>
> I have reworked the baffles to tight tolerances and also added the
> spin-on oil filter. I did not lose any oil for the day of flying.
>
> First I am looking for further advice, I did see Lynn's ring job
> suggestion and I trust his expertise. Compression on all cylinders is
> 68 or above.
>
> Second... what are other's experiences with oil temperature? Can you
> publicly or privately let me know your average oil temp, oil pressure
> with OAT factored in?
>
> Thanks,
> John
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