Pyrometer Probe Placement
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New User
Joined: Jun 2004
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From: Greenwood, Indiana
Pyrometer Probe Placement
I Have a 91 F250 with a 7.3 non turbo. I need to know where is the best place to put the pyro probe. I know the father away you get from the head, the father off it will read, do to the exhaust cooling. I have read some of you put them in dirrectly behind the manifold, but what about putting it right behind the Y pipe? I think there would be bettter so you could average the two banks. Or do they run pretty close. (I'm more of an inline six guy, so I don't know) I know on some of the 99 power jokes, there intakes would feed one side more air than the other, causing the temp to be different, but does the ol' 7.3 have any problems like that?
Thanks For any info,
Goldie
Thanks For any info,
Goldie
OK, Stupid question time,
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
A pyrometer gives you the exhaust temperature.
Pistons and turbos start to melt at around 1250 degrees.
Pistons and turbos are expensive to replace.
So if you have a pyrometer, and see the exhaust temp getting close to 1200 degrees, you know to back out of the throttle before you empty your wallet and bank account.
In my opinion, it is not that important on a naturally aspirated motor.
But on a turbocharged motor it is very important, the extra air and fuel can run the exhaust temps up extremely fast.
Bucking a head wind and running 70 MPH on flat ground will get things hot real fast.
Pulling a load up a hill will do the same thing.
Pyrometer will cost 100 - 150 dollars.
Reman engine with turbo 6500.
New engine with turbo - over 10 grand.
Cheap insurance.
Pistons and turbos start to melt at around 1250 degrees.
Pistons and turbos are expensive to replace.
So if you have a pyrometer, and see the exhaust temp getting close to 1200 degrees, you know to back out of the throttle before you empty your wallet and bank account.
In my opinion, it is not that important on a naturally aspirated motor.
But on a turbocharged motor it is very important, the extra air and fuel can run the exhaust temps up extremely fast.
Bucking a head wind and running 70 MPH on flat ground will get things hot real fast.
Pulling a load up a hill will do the same thing.
Pyrometer will cost 100 - 150 dollars.
Reman engine with turbo 6500.
New engine with turbo - over 10 grand.
Cheap insurance.
