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Replacing an EGT Probe

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art(at)zemon.name
Guest

Posted: Mon Jan 27, 2020 6:38 pm Post subject: Replacing an EGT Probe

Folks,

I have one EGT probe which is intermittent and I want to replace it during my annual next month. It is an MGL probe, like thisÂ https://www.aircraftspruce.com/catalog/inpages/1105567.php

When I bought my engine, it came with a full set of probes and I kept the old ones.Â 

Should I install one of the old probes? Are they EGT probes the same? Or should I buy a new one?Â 

Â  Â  -- Art Z.

-- 

https://CheerfulCurmudgeon.com/Love the stranger for you yourselves were strangers in Egypt. Deut. 10:19

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ceengland7(at)gmail.com
Guest

Posted: Mon Jan 27, 2020 6:56 pm Post subject: Replacing an EGT Probe

On 1/27/2020 8:34 PM, Art Zemon wrote:

     

      	  Quote: 	
		                         Folks,

         

         

         I           have one EGT probe which is intermittent and I want to replace           it during my annual next month. It is an MGL probe, like thisÂ https://www.aircraftspruce.com/catalog/inpages/1105567.php

         

         

         When           I bought my engine, it came with a full set of probes and I           kept the old ones.Â 

         

         

         Should           I install one of the old probes? Are they EGT probes the same?           Or should I buy a new one?Â 

         

         

         Â            Â  -- Art Z.

         

         

         -- 

                                                                                                                                                                                                                                                                                                                    https://CheerfulCurmudgeon.com/                                                                            Love the                                         stranger for you yourselves were                                         strangers in Egypt. Deut.                                       10:19

                                   

                                 

                               

                             

                           

                         

                       

                     

                   

                 

               

             

           

         

       

     	
     Both are likely type K probes. Next question is, grounded or     ungrounded. The replacement should match the original.

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nuckolls.bob(at)aeroelect
Guest

Posted: Mon Jan 27, 2020 7:12 pm Post subject: Replacing an EGT Probe

At 08:34 PM 1/27/2020, you wrote:

  	  Quote: 	
		  Folks,



 I have one EGT probe which is intermittent and I want to replace it during my annual next month. It is an MGL probe, like thisÂ  https://www.aircraftspruce.com/catalog/inpages/1105567.php



 When I bought my engine, it came with a full set of probes and I kept the old ones.Â 



 Should I install one of the old probes? Are they EGT probes the same? Or should I buy a new one?Â 	


   EGT probes are generally type-K wire

   and operationally robust . . . if they

   work at all . . . they're probably

   okay. Besides, you're not using it

   to hit a target temperature . . . just

   so many "clicks below peak."



   So try an old one . . . it just might

   save you some bux.



 

 

   Bob . . .

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nuckolls.bob(at)aeroelect
Guest

Posted: Mon Jan 27, 2020 7:18 pm Post subject: Replacing an EGT Probe

 	  Quote: 	
		  Both are likely type K probes. Next question is,

 grounded or ungrounded. The replacement should match the original. 	


  Charlie brings up an excellent point. If your

  EGT instrument is a stand-alone steam-gage,

  it probably doesn't care. But if a modern

  digitally processed device, it might make

  a difference. Something to consider if your

  experimental replacement from the junk-box

  is wonky. Cheap, low risk experiment.



 

 

   Bob . . .

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cluros(at)gmail.com
Guest

Posted: Mon Jan 27, 2020 7:44 pm Post subject: Replacing an EGT Probe

Is it the probe or the connector?



Art in my experience there is no difference in functionality between different brand probes. Garmin, Dynon, Electronics International, they all respond and read the same. The difference lies in the longevity of the probes and quality of the connectors. If you already have probes that came with the engine (and if you had 4 probes it was for some sort of engine monitor so they are probably the correct types) old or not I would use them until they fail. No sense spending money on something that will work the same as what you already have.

I often cut the connectors off and use these instead:

https://www.aircraftspruce.ca/catalog/inpages/eioverlapolc-1-10-05470.phpÂ Â 



On Mon, Jan 27, 2020 at 7:25 PM Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:



 	  Quote: 	
		     	  Quote: 	
		  Both are likely type K probes. Next question is,

 grounded or ungrounded. The replacement should match the original. 	


 Â Charlie brings up an excellent point. If your

 Â EGT instrument is a stand-alone steam-gage,

 Â it probably doesn't care. But if a modern

 Â digitally processed device, it might make

 Â a difference. Something to consider if your

 Â experimental replacement from the junk-box

 Â is wonky. Cheap, low risk experiment.



 

 

 Â  Bob . . .

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art(at)zemon.name
Guest

Posted: Tue Jan 28, 2020 7:47 pm Post subject: Replacing an EGT Probe

Thanks, folks. I'll try one of the old EGT probes and see if it works.

Cheers,

Â  Â  -- Art Z.



-- 

https://CheerfulCurmudgeon.com/Love the stranger for you yourselves were strangers in Egypt. Deut. 10:19

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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