Is there a difference.?
Bottom line is UDP's free up power throughout the entire rpm range. The higher the rpm, the greater the gain. This is called common sense. As an example, I work at an engine shop that has been building engines for Nascar for over 20 years. On a restrictor plate engine, we underdrive the water pump and power steering pump as much as possible, while still provide enough cooling for the engine. The difference between a 6" and a 7.25" power steering pulley at 7400 rpm is about 3 h.p. On a plate engine, this is a significant gain, considering we're using low drag pumps to begin with. The highest parasitic loss is always at peak rpm.
Thread
Thread Starter
Forum
Replies
Last Post




