Most of the time, the size of the turbine depends on its wheel's exducer diameter, or the part of the wheel air passes over last. A larger bore in the housing will typically yield more power. Sort of. The trick is keeping the turbine wheel's diameter within 15 percent of the compressor wheel's, give or take.Feb 15, 2016
What is the biggest turbo size?
Precision Turbo & Engine unveiled its massive 143-millimeter ProStock Tractor Turbocharger at the Performance Racing Industry (PRI) show in Indianapolis, Indiana, and it's everything you never knew you needed. It is truly massive, but that won't matter too much because it's rated for up to 5,500 horsepower.Dec 19, 2019
Can you fit any turbo on any car?
You can probably put a turbocharger on any internal combustion engine car, provided you have sufficient physical space in the engine bay to fit the turbo and it's associated hardware.
Is a smaller turbo better?
Large turbos will bring on high top-end power, but smaller turbos will provide better low-end grunt as they spool faster. There are also ball bearing and journal bearing single turbos. Ball bearings provide less friction for the compressor and turbine to spin on, thus are faster to spool (while adding cost).