1HD-T EGT Temparature? (1 Viewer)

[Henri]

Hi, I've got a 1HD-T not intercooled with the EGT probe fitted in the manifold.

What is the maximum temperature you can run on and for how long?
When cruising at 120km/h the EGT is 450 degrees Celsius. When putting foot down up hill it reach up to 850 'C, whereby my alarm warns me and I slightly lift my foot from the paddle to drop the EGT. Been driving like this for 15 000 km.

 

[IanB]

I've always seen it recommended that 1250F (677C) sustained EGT's pre-turbo was the safe max you should be shooting for. Others will say you can push beyond that. I like to keep it safe.

 

[ZCissner]

My probe is in the manifold and I cant get the temps to go over 1000 degrees F, that’s with a 12 foot box trailer, my unloaded no trailer temps at 120kph is about 600 F, but I’ve always been told that 1250 is about max safety for longevity

 

[MUDZLLA]

I run around 800-900F at highway speed and have to back off or shift down to keep it under 1250 under load.

 

[mudgudgeon]

Hi, I've got a 1HD-T not intercooled with the EGT probe fitted in the manifold.

What is the maximum temperature you can run on and for how long?
When cruising at 120km/h the EGT is 450 degrees Celsius. When putting foot down up hill it reach up to 850 'C, whereby my alarm warns me and I slightly lift my foot from the paddle to drop the EGT. Been driving like this for 15 000 km.

I personally have no problem with these EGTs.
I wouldn't push beyond 850c for any length of time.

 

[Henri]

Thanks to everyone's input, much appreciated. I'll keep my pump and boost settings as is and just watch the EGT gage, thats why I installed it.

Attached is my dyno readings, wasn't 3rd gear but 4th gear it was tested on.

 

[Obrokoff]

I have pre-turbo installed sensor. Max temp I seen is 670’C