Underdrive pulley has proven results
#1
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Underdrive pulley has proven results
Quote from Zoomer, "...our best guess is that the car'* temps run 2 deg hotter than normal. We've dyno tested and found it gives 3WHP at 5800rpm."
This relates to the ZZP underdrive waterpump pulley. Somewhere there is word that the stock size waterpump pulley caused cavitation, hence the UD pulley "should" allow the engine to run cooler. Anyone have a source on this if it exists?
Either way, if the car is running 2 deg hotter, I'm glad I drilled my 180-stat.
Hope you all find this info helpful.
This relates to the ZZP underdrive waterpump pulley. Somewhere there is word that the stock size waterpump pulley caused cavitation, hence the UD pulley "should" allow the engine to run cooler. Anyone have a source on this if it exists?
Either way, if the car is running 2 deg hotter, I'm glad I drilled my 180-stat.
Hope you all find this info helpful.
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i dont think it makes much of a difference. Our cooling systems are capable of keeping our cars pretty cool. If you dont believe me take out your tstat and see how much it warms up.
How do they test if the pump was cavitating?
How do they test if the pump was cavitating?
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Originally Posted by macho_mike21
i dont think it makes much of a difference. Our cooling systems are capable of keeping our cars pretty cool. If you dont believe me take out your tstat and see how much it warms up.
Originally Posted by Sol
Would the underdrive pulley cause the water pump to spin faster or slower?
If cavitation was much of a problem, shouldn't we hear about more wp failures?
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