Post by
Wulfgang »
https://forums.nicoclub.com/wulfgang-u10889.html
Tue Jul 20, 2004 7:21 am
Um... I *could* be wrong... but I am pretty sure the primary reasons many turbo setups are not water cooled are much more simple than what you said:
1. Water cooled turbos cost more.2. Running water lines is difficult.3. Water cooled turbos cost more.
Most, if not all, OEM setups use water-cooled turbos because they are more durable and far, far less susceptible to coking. And although it is true that your coolant is "hot", circulating at right about 190ºF after going through the engine, it is still many hundreds of degrees cooler than your turbine housing after a hard run.