Getting ready to install a pyro post turbo, and wanted to know what the upper temperature range would be? I had some parts fall off, and I was told to monitor the egts and not go over 900 for good turbo life. I wanted to make sure this was 900 post turbo. Last gauge I had was 1250, but was in the manifold. Thanks
Pyrometer temperature
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by scoobertdoo, Jan 14, 2021.
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What engine?? Not that it matters much, but sure would be helpful
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1000ish somewhere in there. One of our trucks says 1025 and the other 1100 on the dash. I prefer 950 max just to be safe on a long pull
okiedokie Thanks this. -
Easiest way to keep EGT's in check is to not lug the engine. Pulling down to 1100-1200 now will heat it up a lot more than before the parts falling off.
Edit: don't know the characteristics of the mx but I wouldn't lug it below 1350-1400 now for any length of time. Don't worry about a few extra rpm you'll be getting better mpg with the delete anyways and it's easier on everything not lugging it pounding the #### out of it all the time. I'd sacrifice a few tenths mpg any day to increase longevity.Last edited: Jan 14, 2021
D.Tibbitt Thanks this. -
I was told that 900° is perfectly safe for just about any diesel engine, but that piston tops will start to anneal (soften) at 1300°. All of these are pre-turbo numbers.
okiedokie, God prefers Diesels and D.Tibbitt Thank this. -
Difference in pre and post turbo is about 250-300°God prefers Diesels and jsnell Thank this. -
The aluminum piston crowns(depending on motor) will start to melt before the iconel turbine in the turbo.... It's not for turbo health, they'll withstand 1500+
Motors with Steel crowns have a first weak point of compression rings losing tension from repeated high egt(1400+ on those motors), injector nozzle coking, then the exhaust valves , then turbo.Brettj3876 and God prefers Diesels Thank this. -
On the flip side, the engine brake is useless below 15.Brettj3876 Thanks this. -
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