EGT probe at the turbo? - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 12-09-2011, 08:16 AM Thread Starter
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EGT probe at the turbo?

This has been bugging me for a while now.

Has anyone put the egt probe right at or in the exhaust inlet of the turbo?
Just wondering if this area would be the best for temp readings? I know, the manifold is the gospel, but could this area be better?

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post #2 of 11 Old 12-09-2011, 08:32 AM
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Wouldnt read any different than at the manifold. And would be harder to get to.

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post #3 of 11 Old 12-09-2011, 08:37 AM Thread Starter
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Well ok, then what about right at where the DP hooks up? I would assume that area would stay cooler due to having the turbine housing volume diluting the heat load.

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post #4 of 11 Old 12-09-2011, 08:50 AM
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I'd think that you'd want to keep the EGT probe on the pressured side of the turbo.

Pressure=Heat
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post #5 of 11 Old 12-09-2011, 08:52 AM
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At the moment mines in the downpipe aft the turbo. I'm moving it to the drivers side manifold for more accurate readings when I tear everything down to do the ARP studs and gaskets. Done allot of research, it's also where all the gauge manufacturers suggest as well.


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post #6 of 11 Old 12-09-2011, 09:30 AM
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Quote:
Originally Posted by dee004 View Post
At the moment mines in the downpipe aft the turbo. I'm moving it to the drivers side manifold for more accurate readings when I tear everything down to do the ARP studs and gaskets. Done allot of research, it's also where all the gauge manufacturers suggest as well.
Mine is to. I just keep it less then 800* for extended periods and 1000* if it's a quick hammer down/race. Had no issues thus far


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post #7 of 11 Old 12-09-2011, 11:06 AM
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ihad it at downpipe before. but reading was really low. talket whit matt @gearhead he said put it in mainfold now i see whole different readings.

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post #8 of 11 Old 12-09-2011, 11:17 AM
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I use to have mine in the down pipe, 4" after the turbo. My EGT's would only reach 1100* @ WOT with a race tune post turbo. Now it's in the manifold and at WOT with a race tune I can get 1500+ EGT.

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post #9 of 11 Old 12-09-2011, 05:12 PM
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dee004 sent me this link. He and I had the same discussion. I was ready to mount my EGT sensor in my down pipe til I read this article.

Ford Diesel Power Powerstroke Performance

I am now going to mount it in the drivers side exhaust manifold.

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post #10 of 11 Old 12-09-2011, 06:28 PM Thread Starter
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I understand about downstream of the turbine wheel getting cooler readings. the volume of the DP is greater that the up-pipes or manifolds which would make for a greater cooling effect. I was talking about right at the turbine wheel in either spot(inlet or outlet). I would feel that either spot would give the best temp reading at the turbine. I feel the manifold gives a better reading at the exhaust valves, ports, and pistons.

I have a probe in both headers and the passenger side reads around 50* hotter due the longer path compared to the drivers side. Not to mention the bend at the exhaust inlet.

David

05 f250 ( double your pleasure ) underway

'10 f250 ccsb 4x4, project super mom 366/515 compounds, 200hp sticks, and all the other goodies
Most importantly, the car seat mod
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