egt

[JNehl]

I have an EGT gauge on my manifold as well as behind the turbo on the exhaust. I have been told that the truck should cool to 300 degrees prior to shutting down. Is that 300 for the turbo or for the engine? After pulling hard I found that it takes a little longer for the temperature on the exhaust to go down to 300 while the manifold temperature cools to 300 fairly quick. After seeing this I would think that anyone with modifications really need two egt gauges in order to protect their investment.

 

[DNewell]

I had some questions in another post, and the concensus is that with a pre-turbo probe, it should be 300 on that one.

 

[pwerwagn]

I always let mine cool to well below 300 pre turbo, or at least for a minute at 300* pre. Reason being, when I had the probe post turbo, it would take longer to cool after a hard pull. Its because the turbo has absorbed more heat, so it will take longer to cool. this is in turn heating up the exhaust as it passes through the turbine housing, thats why you are getting a higher reading post than pre. So I say 300* post turbo for best turbo life... .

After all, its the turbo you are protecting from a hot shutdown, not everything before it.



--Jeff

 

[NoSeeUm]

I generally would let mine cool to around 300F post turbo. I have found that at times I could be below 300F pre and up around 600F post, but below 300F pre and over 400F post is not uncommon. Doing some testing in the past I would stop the engine, then turn the key back on and watch the post temperature increase.



Currently I have the BD Cool Down Timer, so this issue has been made trouble free and waiting for cooldown does not hang me up.



Jim