520 Contential oil temp.

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rowdy1
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520 Contential oil temp.

Postby rowdy1 » Sun Feb 05, 2017 8:31 pm

Some one help me with the theory of oil temp Vs. oil pressure. I turn the oil pressure down on my 520, it was over 60 psi hot while running, turned it down to 35-40. Now the oil temp jumped up, it will get near 240 if I don't stop and let it cool off. Motor only has 15 hours on it and runs fine.

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jopete
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Re: 520 Contential oil temp.

Postby jopete » Mon Feb 06, 2017 2:48 pm

i'm no expert like most people on here, but I would think that as you lose oil pressure the motor heats up due to lack of cooling.
I do not know the specs on a 520, you might want to read up on it and try to get your oil pressure in the correct range.

I would be tickled pink with 60psi oil pressure on my lycomming or my gpu, but that's not a 520, I know nothing about them.

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Papa1
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Re: 520 Contential oil temp.

Postby Papa1 » Mon Feb 06, 2017 8:58 pm

Normal operating pressure from the manual is 30-60 PSI. Did it run hot before when it was over 60 psi? Here is a link to the manual.
http://www.tcmlink.com/pdf2/maintenance ... x30041.pdf
2002 13' Hamant Ultralite IO520 72" Sensenich Q 3 blade
It's better to have and not need than to need and not have!

Moritz
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Re: 520 Contential oil temp.

Postby Moritz » Wed Feb 08, 2017 10:34 pm

When u reduced the pressure less oil is going thru the engine. The engine is producing the same amount of heat but less oil.flow. The oil is going to heat up to a higher temperature.

Your oil cooler not cooling the oil down or plugged or the vernietherm ( thermostat) that regulates the oil flow thru the oil cooler is not working. You could have air in the oil cooler that keeps the oil from flowing thru the cooler. Where is the oil cooler and how are the oil ones running in to it. Any pictures h

rowdy1
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Re: 520 Contential oil temp.

Postby rowdy1 » Thu Feb 09, 2017 2:45 pm

The oil cooler is directly below the engine. 1st line comes out of the engine with a 90 deg fitting and straight down into the cooler. The other has a 90 deg. fitting out of the cooler, runs along the top of it, then straight up and back into the engine with a 90 deg. fitting. I would think that 45psi of oil pressure would push the air out of the cooler, back into the engine. Its a new Hayden cooler, aprox 12'' x 20'', and all new fittings and hyd. hose, #8 I think.
A buddy of mine recommended taking the vernietherm out and installing a pipe plug. Any thoughts?


Moritz
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Re: 520 Contential oil temp.

Postby Moritz » Thu Feb 09, 2017 9:14 pm

if you can post a picture of it I can tell. if the oil line comes in the bottom of the cooler you trap air in the top of the cooler and you can no push it out.

rowdy1
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Re: 520 Contential oil temp.

Postby rowdy1 » Fri Feb 10, 2017 12:06 pm

Lines come in and out the top. Also I filled to cooler / lines with oil when I installed it. I did not have a problem until I reduced the oil pressure. I was told that less oil pressure would slow the oil going thru the cooler and dissipate more heat. Also, I didn't like seeing 75psi oil pressure on cold start up. Especially when outside temps are in the 40s.

Moritz
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Re: 520 Contential oil temp.

Postby Moritz » Sat Feb 11, 2017 12:43 am

That is not to high for start up

pirate
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Re: 520 Contential oil temp.

Postby pirate » Sat Feb 11, 2017 10:05 am

I did not have a problem until I reduced the oil pressure. I


Sounds like you figured out your problem.
Compromise is failure on the installment plan.


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