What should my exhaust gas temperature be?
Exhaust gases normally discharges at a temperature of around 420°C (788°F).
What temperature does an exhaust manifold reach?
1200 degrees F.
Surfaces for potential ignition include exhaust manifolds, exhaust pipes nearest the manifold, catalytic converters and turbochargers. Manifolds and/or exhaust pipes on some vehicles can reach 1200 degrees F. It is rare to find temperatures this high in normal operation.
What does exhaust gas temperature indicate?
In a piston engine, EGT is a measurement of the temperature of the exhaust gases at the exhaust manifold. As the temperature of the exhaust gas varies with the ratio of fuel to air entering the cylinders, it can be used as a basis for regulating the fuel/air mixture entering the engine.
What causes high exhaust temperatures in gas engines?
High exhaust gas temperatures are caused by too much fuel and too little air within the diesel motor’s cylinders. Facilitate the efficient consumption of fuel, and lowered exhaust temperatures, by allowing more clean air to flow into the motor and reset the appropriate air to fuel ratios.
What is the highest recommended pyrometer temperature?
It depends on where the pyrometer is sensing. If you install pre-turbo then your safe point is a maximum of 1200 F or so, (it doesn’t vary between engines much as it’s based on the melting point of the aluminum pistons).
What should EGT be at idle?
The longer it idles the cooler it will get, but no cooler than around 250* if the engine is at full operating temperature unless its VERY cold outside. When the weather is warmer summer then typically EGT’s will stay more around 300-325* depending on how long its been idling.
How hot do headers get on a 350?
It can run up to 400 to 500 degrees if you were running a steady 65 MPH.
Do headers get hotter than manifolds?
Even when the surface temperatures of manifolds and headers are the same, the headers have maybe 3-4 times more surface. They can radiate 3-4 times more heat.
What is considered high EGT?
The absolute maximum safe EGT range is debatable. Our universal rule of thumb, regardless of engine make/model/year, is to not exceed 1250° F and not to operate in the 1200° F – 1250° F range for an extended period of time.
Why are my EGTs so high?
As we pointed out earlier, high EGTs are the result of too much fuel for the available air. If you see EGTs climbing over 1300º F., the fastest way to reduce the amount of fuel going to the engine is to back off the accelerator pedal. Another possible solution is to downshift if your speed permits it.
What is normal EGT temp?
The temperature of the turbine, (turbo) blades probably never reached above 1000 degrees. A good safe target is to set your edge, or if you have regular gauges, your foot, at a cutoff temperature of 1250. Then you are never going to get your temps above an “sustained” unsafe limit.