Most Efficient Turbo = Less Heat?
Most Efficient Turbo = Less Heat? I could use some help determining how some turbos produce more charge air heat than others at the same psi...
For example, some say a small turbo pushed hard will be inefficient and produce a lot of heat. Where a properly sized turbo at the same psi will create less heat. How is that so and is it due to the turbine size, compressor size, or both?
I'm putting together my first turbo build and Want to get more info before buying the turbo. Thanks!
For example, some say a small turbo pushed hard will be inefficient and produce a lot of heat. Where a properly sized turbo at the same psi will create less heat. How is that so and is it due to the turbine size, compressor size, or both?
I'm putting together my first turbo build and Want to get more info before buying the turbo. Thanks!
TECH Fanatic
Joined: Oct 2015
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From: Pittsboro, IN
I assume the "heat" you are referring to is the inlet air temp. In this example, the heat production will largely be dictated by the compressor efficiency. Also, too small of a turbine will make the drive pressure go through the roof causing higher EGTs.
Yes, charge air/inlet air temp. So stay away from the ebay compressor wheels if you don't want high charge air temps.
What I don't get is how can some compressor wheels, at the same psi, have different charge temps?
What I don't get is how can some compressor wheels, at the same psi, have different charge temps?
boost pressure is just a measurement of restriction to airflow through the motor. it's not a dictation of power. ---not all boost is created equal---
a compressor outside it's efficiency range will heat the air it is compressing more than one that is operating in it's efficient airflow range.
a compressor outside it's efficiency range will heat the air it is compressing more than one that is operating in it's efficient airflow range.
There is zero wrong with getting an eBay or China brand turbo for 99.99% of builds. There are plenty of other factors that are more important and determine how a given turbo will act on a given engine.
