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high oil temps 912

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HOLZY(at)aol.com
Guest

Posted: Thu Jun 01, 2006 9:39 am Post subject: high oil temps 912

List Members,

 

I have been getting some very high oil temps lately on my 912.  POH  says up 

to 285 is within limits, but my gauge only goes to 260.  I have  been doing a 

lot of pattern flying & it spends most of the time  pegged.  It drops off a 

little(10-20 degrees) when I level off at 3000  ft.Pressure is only slightly 

high & cht's are fine so my mechanic thinks it  is a gauge/sender problem.  I 

did, however, get a new gauge & sender at  the beginning of 2005.  There were no 

high readings in 2005.  Engine  is 10 years old but with only 125 hours,  oil 

change is fresh this  spring.  Any ideas or suggestions would be appreciated.  

What are  Ideal oil temps/pressure for the 912 in the summer?

 

Thanks in advance for the advice,

 

Mike Holzberger

Milwaukee WI

N104DG Model IV Speedster 912

lcfitt(at)sbcglobal.net
Guest

Posted: Thu Jun 01, 2006 11:46 am Post subject: high oil temps 912

Mike are you using an oil cooler?



Lowell

---

mike
Guest

Posted: Thu Jun 01, 2006 1:37 pm Post subject: Re: high oil temps 912

This may sound weard, but turn off your charging system, when I do all my temps drop 20degrees.  Still trying to figure why.

roncarolnikko(at)hotmail.
Guest

Posted: Thu Jun 01, 2006 2:01 pm Post subject: high oil temps 912

Mike do you have a ground strap on your engine, frame, panel?  Ron NB Ore

 	  Quote: 	
		  From: "kitfoxmike" <kitfoxmike(at)yahoo.com>

Reply-To: kitfox-list(at)matronics.com

To: kitfox-list(at)matronics.com

Subject: Re: high oil temps 912

Date: Thu,  1 Jun 2006 14:37:36 -0700






This may sound weard, but turn off your charging system, when I do all my 

temps drop 20degrees.  Still trying to figure why.



--------

kitfoxmike

kitfox4 1200 912ul speedster

http://www.frappr.com/kitfoxmike





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=37938#37938


	


_________________________________________________________________

Dont just search. Find. Check out the new MSN Search! 

http://search.msn.click-url.com/go/onm00200636ave/direct/01/

mike
Guest

Posted: Thu Jun 01, 2006 3:14 pm Post subject: Re: high oil temps 912

good grounds, but the temps on all guages do this. I have a ground that goes to the engine, seperate ground buss for all other grounds.  I come across this because my stereo was making noise and I turned off the alternator and it quit and I noticed the temps dropped when doing it.  I did correct the stereo noise by putting a cap on the power lead to ground for the stereo.  Nice and quit now.  But the temps has me wondering might need to tackle that problem next.  But then again even with this the temps don't go over 220 on head temps, oil or water(still head temp).  That's with 90 f outside temp.



kitfox4 1200

912ul 



kitfoxmike

neflyer48(at)cableone.net
Guest

Posted: Thu Jun 01, 2006 3:58 pm Post subject: high oil temps 912

Mine usually shows about 240 to 250 on warm days. The sending unit is in the 

bottom of the block, in the front port. The oil blow back hose is in the 

back port. I believe the high temperature reading is because the sending 

unit is not really submerged in oil because the oil is scavenged out of the 

block. The hot blowby gas in the crankcase is what is really being read by 

the oil pressure gauge. I thought about changing it to a different location.



Jerry Kohles  912  830hrs.

---

smokey_bear_40220(at)yaho
Guest

Posted: Thu Jun 01, 2006 9:23 pm Post subject: high oil temps 912

Mike,



Try running a temporary ground wire from your gauge

grounds to the battery (-) terminal.  See if that

changes it.  You may have a bad battery ground since

you get the lower reading off the battery.



Kurt S.



--- kitfoxmike <kitfoxmike(at)yahoo.com> wrote:



 	  Quote: 	
		   This may sound weard, but turn off your charging

 system, when I do all my temps drop 20degrees. 

 Still trying to figure why.

 

 --------

 kitfoxmike

 kitfox4 1200 912ul speedster

 http://www.frappr.com/kitfoxmike


	


__________________________________________________

mike
Guest

Posted: Fri Jun 02, 2006 7:42 am Post subject: Re: high oil temps 912

Next time I have the cowl off I'll check the ground for the guages.

lcfitt(at)sbcglobal.net
Guest

Posted: Fri Jun 02, 2006 10:44 am Post subject: high oil temps 912

I am really curious about what is going on here.  When I was building, I 

went to the factory fly-in in Caldwell and noticed that most 912 powered 

airplanes had tape over part of their oil cooler fins to reduce air flow and 

thus increase oil temps.  The target, of course, close to the boiling point 

of water to keep the condensation and blow by moisture under control.



For that reason I used the 5.5 inch (between centers) Earls oil cooler 

rather than the 7 inch sold by Skystar at the time.  I still had to put 

shutters on the oil cooler and can climb with temps in the green and with 

the exception of the hottest days, the shutters are rarely fully open.



What model KF are you flying?



Regrding blowby gasses, Rotax has spent a lot of energy with Service 

Bulletins talking about the importance if not having air (gas) in the oil. 

The new dipstick, oil recommendations, direction of prop rotation (hand 

propping) and venting of the oil system after oil change have all been to 

eliminate this issue and they hold that if you have bubbles in your oil, you 

will have much more serious problems than simply with the high oil temps.



incidentally, I have just gone through my forth oil temp sender - WesTach - 

in two years.  One lasted less than 2 months, this one almost exactly a 

year.  What are others experience with these senders - the short one.



Lowell



Can yoiu give a few more details on your installation.

---

clint_bazzill(at)hotmail.
Guest

Posted: Fri Jun 02, 2006 12:20 pm Post subject: high oil temps 912

I replaced oil temp sensor at 1000 hours, and a CHT at about 800.  Clint 

912ULS

From: "Lowell Fitt" <lcfitt(at)sbcglobal.net>

Reply-To: kitfox-list(at)matronics.com

To: <kitfox-list(at)matronics.com>

Subject: Re: high oil temps 912

Date: Fri, 2 Jun 2006 11:41:02 -0700

I am really curious about what is going on here.  When I was building, I

went to the factory fly-in in Caldwell and noticed that most 912 powered

airplanes had tape over part of their oil cooler fins to reduce air flow and

thus increase oil temps.  The target, of course, close to the boiling point

of water to keep the condensation and blow by moisture under control.

For that reason I used the 5.5 inch (between centers) Earls oil cooler

rather than the 7 inch sold by Skystar at the time.  I still had to put

shutters on the oil cooler and can climb with temps in the green and with

the exception of the hottest days, the shutters are rarely fully open.

What model KF are you flying?

Regrding blowby gasses, Rotax has spent a lot of energy with Service

Bulletins talking about the importance if not having air (gas) in the oil.

The new dipstick, oil recommendations, direction of prop rotation (hand

propping) and venting of the oil system after oil change have all been to

eliminate this issue and they hold that if you have bubbles in your oil, you

will have much more serious problems than simply with the high oil temps.

incidentally, I have just gone through my forth oil temp sender - WesTach -

in two years.  One lasted less than 2 months, this one almost exactly a

year.  What are others experience with these senders - the short one.

Lowell

Can yoiu give a few more details on your installation.

---

mike
Guest

Posted: Fri Jun 02, 2006 1:03 pm Post subject: Re: high oil temps 912

I personally have the big cooler with a thermostate.  The thermostate is way cool, no more waiting for the engine to warm up, by the time I get to the runway I'm ready to go, doesn't matter if it's 30f outside or 90f, best thing, no more tape on the cooler.  I've also had to replace the oil sensor about 200hrs ago, hum... last year.

kerrjohna(at)comcast.net
Guest

Posted: Sun Jun 04, 2006 5:27 pm Post subject: high oil temps 912

where did you get the thermosat and where did you install it?

  

 John Kerr

  

 [quote]-------------- Original message -------------- 

From: "kitfoxmike" <kitfoxmike(at)yahoo.com> 



 	  Quote: 	
		   --> Kitfox-List message posted by: "kitfoxmike" 

 

 I personally have the big cooler with a thermostate. The thermostate is way 

 cool, no more waiting for the engine to warm up, by the time I get to the runway 

 I'm ready to go, doesn't matter if it's 30f outside or 90f, best thing, no more 

 tape on the cooler. I've also had to replace the oil sensor about 200hrs ago, 

 hum... last year. 

 

 -------- 

 kitfoxmike 

 kitfox4 1200 912ul speedster 

 http://www.frappr.com/kitfoxmike 

 

 

 

 

 Read this topic online here: 

 

 http://forums.matronics.com/viewtopic.php?p=38171#38171 

 

 

 

 

 

 <  BR>&gt  ====== =====================================

mike
Guest

Posted: Mon Jun 05, 2006 6:44 am Post subject: Re: high oil temps 912

lockwood aviation. on top of the motor, behind the gear box.

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