Autometer EGT question

[dewdew]

Does anybody know what size drill bit and tap I need to install the Pyrometer probe?

 

[GSX_RCR]

From what I remember:

Drill size = 11/32

Tap size = 1/8 NPT

But it's best to take it to a hardware store and find out for yourself. I think Autometer has a few different variations in their couplings.

 

[ShoverRobot]

mine was 7/16 - 20 with a 25/64 drill bit

 

[steve]

Mine was 1/8"-27 NPT which calls for a R bit but 11/32" works.

All the current instruction sheets on their site for 0-1600 consumer gauges say 1/8" NPT.

Steve