EGT's

I may hit that as well, but for only a second. I blame my Moose pump and WMO

 

Oscar, what engine are you dealing with?

The Cat engines can run at 1100 degrees with stock combinations all day long. I can show you dyno sheets from most CAT engines that show these temperatures as normal during a dyno test

As modifications are done then it starts coming down to what has been done versus the power being produced. The turbo can play a big part in the EGTs, not only while under a load, but at steady state cruise low boost conditions. The bigger turbos will run high EGTs at low Hp conditions, but actually will drop EGTs as engine load increases and the Hp output increase to maintain speed on a pull, but then will raise the EGTs back up as the length of time under full load increases.

What I see with most Cat engines is too small of a turbine housing to promote fast turbo response. This traps heat in the engine and causes the EGTs to be higher in the manifold than after the turbo by a considerable amount. I prefer a larger turbine housing and wheel or combination of one or the other on anything over 725Hp, but this creates turbo lag. It also creates higher EGTs while cruising at low power levels. The higher EGTs scare people they shouldn't, because they are not working the motor.


So the answer to your question really depends on what was done to your engine and the parts used to build your turbo.

 

The old 335 Cummings 1200 degs before the turbo we drove using the pyro, higher elevations had to back out of it a lot and drop gears no inter coolers back then.

 

u should slow down when u get 1200