Quote:
Originally Posted by Pdwight
I have a water pump job on the books now for the fall....just hit 70K and I would rather catch it before it dies....low temp Tstat at the same time.
Question , how does the underdrive pulley generate more horsepower ?
Is it just greater mechanical advantage or what ??
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Technically speaking, it doesn't generate any HP. The reason that it's call an "underdrive" pulley is that it underdrives the accessories (the water pump, alternator, power steering, etc...). That means that the HP that those accessories steal from the engine, can now be put into the rear wheels.
Hope that helps.