Water pump pulley

Nascar at least at one time used restrictors in place of thermostats. But that would follow the continuous high speed engine part of the article.


They do that to set the MINIMUM OPERATING TEMPERATURE. That’s what it does. That article is wrong.

Others and I have all explained how backwards that thinking is and I’m not about to do it again. Speed the coolant up. As long as the belts stay on you will get better cooling.