The Murphy Builders Site

I don't know if there is a common distance or if it varies from engine to
engine, but can anyone tell me how far from the exhaust port the EGT probe
should be mounted? If it does vary I can't imagine that there would be much
difference. I just need a ballpark figure since I'm putting it on one of
the exhaust header tubes on my Chevy and there won't be any specification
for that. I only have a one-probe system so it won't be used much as a
diagnostic tool, just an aid to leaning. So it's probably only important to
not get too close to the port and end up burning up probes.

Mike Kimball
044SR




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3" to 3.5" from the cylinders exhaust face seems to work well on a Lycoming.

Wayne


----- Original Message -----
From: "Mike Kimball" <mkimball@gci.net>
To: "Rebel List" <rebel-builders@dcsol.com>
Sent: Thursday, April 07, 2005 10:29 PM
Subject: EGT probe location

I don't know if there is a common distance or if it varies from engine to
engine, but can anyone tell me how far from the exhaust port the EGT probe
should be mounted? If it does vary I can't imagine that there would be

much

difference. I just need a ballpark figure since I'm putting it on one of
the exhaust header tubes on my Chevy and there won't be any specification
for that. I only have a one-probe system so it won't be used much as a
diagnostic tool, just an aid to leaning. So it's probably only important

to

not get too close to the port and end up burning up probes.

Mike Kimball
044SR




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When I bought new probes for my MX the probes themselves were designed for
different lengths. The ones I bought were 4-6 inches... make sure the tip
of the probe is centered in the tube.

Mike

----- Original Message -----
From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
To: <rebel-builders@dcsol.com>
Sent: Thursday, April 07, 2005 6:31 PM
Subject: Re: EGT probe location

3" to 3.5" from the cylinders exhaust face seems to work well on a
Lycoming.

Wayne


----- Original Message -----
From: "Mike Kimball" <mkimball@gci.net>
To: "Rebel List" <rebel-builders@dcsol.com>
Sent: Thursday, April 07, 2005 10:29 PM
Subject: EGT probe location

I don't know if there is a common distance or if it varies from engine to
engine, but can anyone tell me how far from the exhaust port the EGT
probe
should be mounted? If it does vary I can't imagine that there would be

much

difference. I just need a ballpark figure since I'm putting it on one of
the exhaust header tubes on my Chevy and there won't be any specification
for that. I only have a one-probe system so it won't be used much as a
diagnostic tool, just an aid to leaning. So it's probably only important

to

not get too close to the port and end up burning up probes.

Mike Kimball
044SR




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