2 EGT probes?
Fleet Mechanic
Joined: Jul 2003
Posts: 1,614
Likes: 22
From: Springfield, PA
I'm sorry if anything came across as unfriendly or such. This idea of EGT's for my truck is an after thought while it's apart, and when I was staring at the manifolds removing the up-pipes, I wasn't looking for EGT places.
I know many people have put them there, but when searching for mounting them on the collector, I didn't find anything. So the post was simply a question as to why this might be.
As an engineer, I always wonder why things are made the way they are, and since there are what appear to be bosses on the collector, I was wondering if they were meant for probes. Heck, they could be convenient places to whack the thing in an effort to separate them from the up-pipes for all I know.
I know many people have put them there, but when searching for mounting them on the collector, I didn't find anything. So the post was simply a question as to why this might be.
As an engineer, I always wonder why things are made the way they are, and since there are what appear to be bosses on the collector, I was wondering if they were meant for probes. Heck, they could be convenient places to whack the thing in an effort to separate them from the up-pipes for all I know.
Logistics Pro
Joined: Dec 2010
Posts: 4,738
Likes: 15
From: Temperance, MI
The point of an EGT gauge is to try and measure the exhaust gasses coming out of the engine, or as close as possible. Right now there's no way to accurately measure the temps inside the combustion chamber. The probe in the manifold is as close to the combustion chamber as we can get for now. By moving the probe to the collector you give the exhaust more time to cool down hence dissipating the temps through the manifold, uppipes and finally the collector itself. It's not uncommon to see a 2-300 degree difference between the two.
EDIT: My Cummins in my signature originally had the probe in the exhaust down pipe. With a Cummins the gasses don't travel as far as with your 7.3 and once I moved the probe to the manifold I instantly seen a 200 degree difference at WOT
EDIT: My Cummins in my signature originally had the probe in the exhaust down pipe. With a Cummins the gasses don't travel as far as with your 7.3 and once I moved the probe to the manifold I instantly seen a 200 degree difference at WOT
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
You didn't, my friend. I just want to be careful when I offer up input that's counter to other input. Without tone and inflection, my words can sometimes crash a party. Such is the way of texting - I'm all thumbs.
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hugger94
Ford Truck Parts for Sale
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Nov 5, 2012 05:49 PM
