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Posted

IMG_1592.thumb.JPG.6d7e4f59be90cb90c9cc796ec07eef3c.JPGOrdered a new bayonet probe for my EDM 800 because the #4 died, and assumed the factory was on #3. Open my cowl to find it on #4. Im pretty sure I need the gasket style from JPI, but there are two listed on Spruce (M-113, M-113-3/8)...anyone know which one I need? (IO-360 A1A) - TT

Posted

Typically there are two common sizes...

The larger one, fits under a spark plug... (less appreciated 50°f variation)

The smaller one, fits under the bayonet TC holder... (better location, still a 25°F variation)

Check to See if that is what you have to decide from...

Also...  Some Mooney ship’s gauge CHT sensors are thermistors and not TCs (thermo couples).

PP thoughts only, not a mechanic.

Best regards,

-a-

  • Thanks 1
Posted

Thanks ! Fortunately, my factory is working, just need the one going to the JPI. I think the 14mm size is the best guess (18mm under spark plug, 3/8 for Tanis) for what will fit under the factory TC. Cheers!

Posted
35 minutes ago, tankertoad said:

Thanks ! Fortunately, my factory is working, just need the one going to the JPI. I think the 14mm size is the best guess (18mm under spark plug, 3/8 for Tanis) for what will fit under the factory TC. Cheers!

The M113-3/8 should be the one for installation under the OEM probe.  The thread size is a 3/8”-24.

Clarence

  • 3 weeks later...
Posted
On 9/2/2019 at 6:21 PM, M20Doc said:

The M113-3/8 should be the one for installation under the OEM probe.  The thread size is a 3/8”-24.

Clarence

Spot-on  -- Thanks!

 

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