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1. 08:08 PM - Re: oil temps (george & nancy Kitchesn)
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--> TeamGrumman-List message posted by: "george & nancy Kitchesn" <Red_Horse@mchsi.com>
I have a similar problem. I purchased '76 Cheetah two years ago and the
engine oil temp has never run near normal (180 degrees). And lately, with
the added hot summer OAT (Huntsville, AL) , the engine oil temp has been
running 2 - 3 needle widths from Red Line. I had the engine overhauled with
the engine baffels and seals replaced at the same time. Having a 5 channel
engine monitor allows me to monitor all 4 cylinder head temps with No. 4
running the hottest. My CHT readings tell me that it's not a cooling problem
as the CHTs run consistently below 400 degrees, usually around 370 -390 in
cruise. I also have an ADC Eng Oil Filter system which eliminates changing
the oil filter. ADC adds say the added filter system and fins should aid in
cooling but I haven't noticed any difference.
After a long instrument training flight today where the oil temp was again
2 - 3 needle widths from red line, I took a long look under the cowling,
again checking the baffels, seals, ect. No problem there. I noticed a sharp
bend in the oil line from the engine to the oil cooler to the point I
believe the line to be crimped, thus possibly restricting oil flow. The only
other thing I can think of is the oil cooler. I believe it to be too small.
When Excel-Air overhauled my engine, John Jaardema (Sp) mentioned that I
could opt for a larger oil cooler with an additonal cooling vane; however, I
opted to keep the OEM oil cooler instead, probably not a good idea.
Anyway, I'm going to have my local maintenance folks take a look at it,
checking the temp bulb, baffels, etc. I'd appreciate any options or
solutions any may have.
George
N22BA
KMDQ Madison Co Executive Airport
----- Original Message -----
From: <airman@appledumplings.com>
Sent: Saturday, August 26, 2006 8:33 AM
Subject: TeamGrumman-List: oil temps
> --> TeamGrumman-List message posted by: "airman@appledumplings.com"
<airman@appledumplings.com>
>
> I wrote a month ago about an oil temp issue. This is an update.
>
>
> I live near atlanta and I have a 1976 aa5b O-360 with 300 SMOH that
> I have owned since march. Since the weather has warmed up my oil
> temps have been running about 1.5 to 2 needle widths from the red-
> line. The things I have done to try to resolve this issue are:
> I replaced baffle seals.
> I fixed the inter cylinder baffles that were not wired together.
> We just recently pulled the vernatherm and it looked to be seated
> correctly and operated as expected when we checked it.
> We also checked the gauge. Unfortunately it seems to reading low not
> high! We are now checking the timing.
> The only thing I can think of left is the Oil cooler. Which brings me
> to this question.
>
> What are my options? I think i am just going to go with a new oil
> cooler rather than re-condition. Are there any STC's for a larger
> cooler and if so can someone send me that info? Have any of you guys
> had field approvals for a different cooler?
>
>
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